[Tarantool-patches] [PATCH v3 4/4] sql: support column addition

[Roman Khabibov <roman.habibov@tarantool.org>]

Enable to add column to existing space with
<ALTER TABLE ADD [COLUMN]> statement. Column definition can be
supplemented with the four types of constraints, <DEFAULT>,
<COLLATE> clauses and <[NOT] NULL>, AUTOINCREMENT.

Closes #2349, #3075

@TarantoolBot document
Title: Add columns to existing tables in SQL
Now, it is possible to add columns to existing empty spaces using
<ALTER TABLE table_name ADD [COLUMN] column_name column_type ...>
statement. The column definition is the same as in <CREATE TABLE>
statement.

For example:

```
tarantool> box.execute("CREATE TABLE test (a INTEGER PRIMARY KEY)")
---
- row_count: 1
...

tarantool> box.execute([[ALTER TABLE test ADD COLUMN b TEXT
         >                                           CHECK (LENGTH(b) > 1)
         >                                           NOT NULL
         >                                           DEFAULT ('aa')
         >                                           COLLATE "unicode_ci"
         >             ]])
---
- row_count: 0
...
```
---
 extra/mkkeywordhash.c          |   2 +-
 src/box/errcode.h              |   2 +
 src/box/sql/build.c            | 431 +++++++++++++++++++++---------
 src/box/sql/parse.y            |  44 ++-
 src/box/sql/parse_def.h        |  20 ++
 src/box/sql/sqlInt.h           |  45 +++-
 test/box/error.result          |   2 +
 test/sql/add-column.result     | 471 +++++++++++++++++++++++++++++++++
 test/sql/add-column.test.sql   | 167 ++++++++++++
 test/sql/checks.result         |  20 ++
 test/sql/checks.test.lua       |   9 +
 test/sql/foreign-keys.result   |  28 ++
 test/sql/foreign-keys.test.lua |  11 +
 13 files changed, 1108 insertions(+), 144 deletions(-)
 create mode 100644 test/sql/add-column.result
 create mode 100644 test/sql/add-column.test.sql

diff --git a/extra/mkkeywordhash.c b/extra/mkkeywordhash.c
index 486b6b30d..dea047241 100644
--- a/extra/mkkeywordhash.c
+++ b/extra/mkkeywordhash.c
@@ -76,7 +76,7 @@ static Keyword aKeywordTable[] = {
   { "CHECK",                  "TK_CHECK",       true  },
   { "COLLATE",                "TK_COLLATE",     true  },
   { "COLUMN_NAME",            "TK_COLUMN_NAME", true  },
-  { "COLUMN",                 "TK_STANDARD",    true  },
+  { "COLUMN",                 "TK_COLUMN",      true  },
   { "COMMIT",                 "TK_COMMIT",      true  },
   { "CONFLICT",               "TK_CONFLICT",    false },
   { "CONSTRAINT",             "TK_CONSTRAINT",  true  },
diff --git a/src/box/errcode.h b/src/box/errcode.h
index 3c21375f5..cbcffb3a8 100644
--- a/src/box/errcode.h
+++ b/src/box/errcode.h
@@ -271,6 +271,8 @@ struct errcode_record {
         /*216 */_(ER_SYNC_QUORUM_TIMEOUT,       "Quorum collection for a synchronous transaction is timed out") \
         /*217 */_(ER_SYNC_ROLLBACK,             "A rollback for a synchronous transaction is received") \
 	/*218 */_(ER_TUPLE_METADATA_IS_TOO_BIG,	"Can't create tuple: metadata size %u is too big") \
+	/*219 */_(ER_SQL_CANT_ADD_COLUMN_TO_VIEW,	"Can't add column '%s'. '%s' is a view") \
+	/*220 */_(ER_SQL_CANT_ADD_AUTOINC,	"Can't add AUTOINCREMENT: the space '%s' already has one auto incremented field") \
 
 /*
  * !IMPORTANT! Please follow instructions at start of the file
diff --git a/src/box/sql/build.c b/src/box/sql/build.c
index 9013bc86f..6f3d2747d 100644
--- a/src/box/sql/build.c
+++ b/src/box/sql/build.c
@@ -285,48 +285,113 @@ sql_field_retrieve(Parse *parser, struct space_def *space_def, uint32_t id)
 	return field;
 }
 
-/*
- * Add a new column to the table currently being constructed.
+/**
+ * Make shallow copy of @a space on region.
  *
- * The parser calls this routine once for each column declaration
- * in a CREATE TABLE statement.  sqlStartTable() gets called
- * first to get things going.  Then this routine is called for each
- * column.
+ * Function is used to add a new column to an existing space with
+ * <ALTER TABLE ADD COLUMN> statement. Copy space def and index
+ * array to create constraints appeared in the statement. The
+ * index array copy will be modified by adding new elements to it.
+ * It is necessary, because the statement may contain several
+ * index definitions (constraints).
  */
+static struct space *
+sql_shallow_space_copy(struct Parse *parse, struct space *space)
+{
+	assert(space->def != NULL);
+	struct space *ret = sql_ephemeral_space_new(parse, space->def->name);
+	if (ret == NULL)
+		return NULL;
+	ret->index_count = space->index_count;
+	ret->index_id_max = space->index_id_max;
+	uint32_t indexes_sz = sizeof(struct index *) * (ret->index_count);
+	ret->index = (struct index **) malloc(indexes_sz);
+	if (ret->index == NULL) {
+		diag_set(OutOfMemory, indexes_sz, "realloc", "ret->index");
+		return NULL;
+	}
+	memcpy(ret->index, space->index, indexes_sz);
+	memcpy(ret->def, space->def, sizeof(struct space_def));
+	ret->def->opts.is_temporary = true;
+	ret->def->opts.is_ephemeral = true;
+	if (ret->def->field_count != 0) {
+		uint32_t fields_size = 0;
+		ret->def->fields =
+			region_alloc_array(&parse->region,
+					   typeof(struct field_def),
+					   ret->def->field_count, &fields_size);
+		if (ret->def->fields == NULL) {
+			diag_set(OutOfMemory, fields_size, "region_alloc",
+				 "ret->def->fields");
+			free(ret->index);
+			return NULL;
+		}
+		memcpy(ret->def->fields, space->def->fields, fields_size);
+	}
+
+	return ret;
+}
+
 void
-sqlAddColumn(Parse * pParse, Token * pName, struct type_def *type_def)
+sql_create_column_start(struct Parse *parse)
 {
-	assert(type_def != NULL);
-	char *z;
-	sql *db = pParse->db;
-	if (pParse->create_table_def.new_space == NULL)
-		return;
-	struct space_def *def = pParse->create_table_def.new_space->def;
+	struct create_column_def *create_column_def = &parse->create_column_def;
+	struct alter_entity_def *alter_entity_def =
+		&create_column_def->base.base;
+	assert(alter_entity_def->entity_type == ENTITY_TYPE_COLUMN);
+	assert(alter_entity_def->alter_action == ALTER_ACTION_CREATE);
+	struct space *space = parse->create_table_def.new_space;
+	bool is_alter = space == NULL;
+	struct sql *db = parse->db;
+	if (is_alter) {
+		const char *space_name =
+			alter_entity_def->entity_name->a[0].zName;
+		space = space_by_name(space_name);
+		if (space == NULL) {
+			diag_set(ClientError, ER_NO_SUCH_SPACE, space_name);
+			goto tnt_error;
+		}
+		space = sql_shallow_space_copy(parse, space);
+		if (space == NULL)
+			goto tnt_error;
+	}
+	create_column_def->space = space;
+	struct space_def *def = space->def;
+	assert(def->opts.is_ephemeral);
 
 #if SQL_MAX_COLUMN
 	if ((int)def->field_count + 1 > db->aLimit[SQL_LIMIT_COLUMN]) {
 		diag_set(ClientError, ER_SQL_COLUMN_COUNT_MAX, def->name,
 			 def->field_count + 1, db->aLimit[SQL_LIMIT_COLUMN]);
-		pParse->is_aborted = true;
-		return;
+		goto tnt_error;
 	}
 #endif
+
+	struct region *region = &parse->region;
+	struct Token *name = &create_column_def->base.name;
+	char *column_name =
+		sql_normalized_name_region_new(region, name->z, name->n);
+	if (column_name == NULL)
+		goto tnt_error;
+
+	if (is_alter && def->opts.is_view) {
+		diag_set(ClientError, ER_SQL_CANT_ADD_COLUMN_TO_VIEW,
+			 column_name, def->name);
+		goto tnt_error;
+	}
+
 	/*
-	 * As sql_field_retrieve will allocate memory on region
-	 * ensure that def is also temporal and would be dropped.
+	 * Format can be set in Lua, then exact_field_count can be
+	 * zero, but field_count is not.
 	 */
-	assert(def->opts.is_ephemeral);
-	if (sql_field_retrieve(pParse, def, def->field_count) == NULL)
+	if (def->exact_field_count == 0)
+		def->exact_field_count = def->field_count;
+	if (sql_field_retrieve(parse, def, def->field_count) == NULL)
 		return;
-	struct region *region = &pParse->region;
-	z = sql_normalized_name_region_new(region, pName->z, pName->n);
-	if (z == NULL) {
-		pParse->is_aborted = true;
-		return;
-	}
+
 	struct field_def *column_def = &def->fields[def->field_count];
 	memcpy(column_def, &field_def_default, sizeof(field_def_default));
-	column_def->name = z;
+	column_def->name = column_name;
 	/*
 	 * Marker ON_CONFLICT_ACTION_DEFAULT is used to detect
 	 * attempts to define NULL multiple time or to detect
@@ -334,18 +399,86 @@ sqlAddColumn(Parse * pParse, Token * pName, struct type_def *type_def)
 	 */
 	column_def->nullable_action = ON_CONFLICT_ACTION_DEFAULT;
 	column_def->is_nullable = true;
-	column_def->type = type_def->type;
+	column_def->type = create_column_def->type_def->type;
 	def->field_count++;
+
+	sqlSrcListDelete(db, alter_entity_def->entity_name);
+	return;
+tnt_error:
+	parse->is_aborted = true;
+	sqlSrcListDelete(db, alter_entity_def->entity_name);
+}
+
+static void
+sql_vdbe_create_constraints(struct Parse *parse, int reg_space_id);
+
+void
+sql_create_column_end(struct Parse *parse)
+{
+	struct space *space = parse->create_column_def.space;
+	assert(space != NULL);
+	struct space_def *def = space->def;
+	struct field_def *field = &def->fields[def->field_count - 1];
+	if (field->nullable_action == ON_CONFLICT_ACTION_DEFAULT) {
+		field->nullable_action = ON_CONFLICT_ACTION_NONE;
+		field->is_nullable = true;
+	}
+	/*
+	 * Encode the format array and emit code to update _space.
+	 */
+	uint32_t table_stmt_sz = 0;
+	struct region *region = &parse->region;
+	char *table_stmt = sql_encode_table(region, def, &table_stmt_sz);
+	char *raw = sqlDbMallocRaw(parse->db, table_stmt_sz);
+	if (table_stmt == NULL || raw == NULL) {
+		parse->is_aborted = true;
+		return;
+	}
+	memcpy(raw, table_stmt, table_stmt_sz);
+
+	struct Vdbe *v = sqlGetVdbe(parse);
+	assert(v != NULL);
+
+	struct space *system_space = space_by_id(BOX_SPACE_ID);
+	assert(system_space != NULL);
+	int cursor = parse->nTab++;
+	vdbe_emit_open_cursor(parse, cursor, 0, system_space);
+	sqlVdbeChangeP5(v, OPFLAG_SYSTEMSP);
+
+	int key_reg = ++parse->nMem;
+	sqlVdbeAddOp2(v, OP_Integer, def->id, key_reg);
+	int addr = sqlVdbeAddOp4Int(v, OP_Found, cursor, 0, key_reg, 1);
+	sqlVdbeAddOp2(v, OP_Halt, -1, ON_CONFLICT_ACTION_ABORT);
+	sqlVdbeJumpHere(v, addr);
+
+	int tuple_reg = sqlGetTempRange(parse, box_space_field_MAX + 1);
+	for (int i = 0; i < box_space_field_MAX - 1; ++i)
+		sqlVdbeAddOp3(v, OP_Column, cursor, i, tuple_reg + i);
+	sqlVdbeAddOp1(v, OP_Close, cursor);
+
+	sqlVdbeAddOp2(v, OP_Integer, def->field_count, tuple_reg + 4);
+	sqlVdbeAddOp4(v, OP_Blob, table_stmt_sz, tuple_reg + 6,
+		      SQL_SUBTYPE_MSGPACK, raw, P4_DYNAMIC);
+	sqlVdbeAddOp3(v, OP_MakeRecord, tuple_reg, box_space_field_MAX,
+		      tuple_reg + box_space_field_MAX);
+	sqlVdbeAddOp4(v, OP_IdxReplace, tuple_reg + box_space_field_MAX, 0, 0,
+		      (char *) system_space, P4_SPACEPTR);
+	sql_vdbe_create_constraints(parse, key_reg);
+
+	/*
+	 * Clean up array allocated in sql_shallow_space_copy().
+	 */
+	free(space->index);
 }
 
 void
 sql_column_add_nullable_action(struct Parse *parser,
 			       enum on_conflict_action nullable_action)
 {
-	struct space *space = parser->create_table_def.new_space;
-	if (space == NULL || NEVER(space->def->field_count < 1))
+	assert(parser->create_column_def.space != NULL);
+	struct space_def *def = parser->create_column_def.space->def;
+	if (NEVER(def->field_count < 1))
 		return;
-	struct space_def *def = space->def;
 	struct field_def *field = &def->fields[def->field_count - 1];
 	if (field->nullable_action != ON_CONFLICT_ACTION_DEFAULT &&
 	    nullable_action != field->nullable_action) {
@@ -364,51 +497,42 @@ sql_column_add_nullable_action(struct Parse *parser,
 }
 
 /*
- * The expression is the default value for the most recently added column
- * of the table currently under construction.
+ * The expression is the default value for the most recently added
+ * column.
  *
  * Default value expressions must be constant.  Raise an exception if this
  * is not the case.
  *
  * This routine is called by the parser while in the middle of
- * parsing a CREATE TABLE statement.
+ * parsing a <CREATE TABLE> or a <ALTER TABLE ADD COLUMN>
+ * statement.
  */
 void
 sqlAddDefaultValue(Parse * pParse, ExprSpan * pSpan)
 {
 	sql *db = pParse->db;
-	struct space *p = pParse->create_table_def.new_space;
-	if (p != NULL) {
-		assert(p->def->opts.is_ephemeral);
-		struct space_def *def = p->def;
-		if (!sqlExprIsConstantOrFunction
-		    (pSpan->pExpr, db->init.busy)) {
-			const char *column_name =
-				def->fields[def->field_count - 1].name;
-			diag_set(ClientError, ER_CREATE_SPACE, def->name,
-				 tt_sprintf("default value of column '%s' is "\
-					    "not constant", column_name));
+	assert(pParse->create_column_def.space != NULL);
+	struct space_def *def = pParse->create_column_def.space->def;
+	struct field_def *field = &def->fields[def->field_count - 1];
+	if (!sqlExprIsConstantOrFunction(pSpan->pExpr, db->init.busy)) {
+		diag_set(ClientError, ER_CREATE_SPACE, def->name,
+			 tt_sprintf("default value of column '%s' is not "
+				    "constant", field->name));
+		pParse->is_aborted = true;
+	} else {
+		struct region *region = &pParse->region;
+		uint32_t default_length = (int)(pSpan->zEnd - pSpan->zStart);
+		field->default_value = region_alloc(region, default_length + 1);
+		if (field->default_value == NULL) {
+			diag_set(OutOfMemory, default_length + 1,
+				 "region_alloc", "field->default_value");
 			pParse->is_aborted = true;
-		} else {
-			assert(def != NULL);
-			struct field_def *field =
-				&def->fields[def->field_count - 1];
-			struct region *region = &pParse->region;
-			uint32_t default_length = (int)(pSpan->zEnd - pSpan->zStart);
-			field->default_value = region_alloc(region,
-							    default_length + 1);
-			if (field->default_value == NULL) {
-				diag_set(OutOfMemory, default_length + 1,
-					 "region_alloc",
-					 "field->default_value");
-				pParse->is_aborted = true;
-				return;
-			}
-			strncpy(field->default_value, pSpan->zStart,
-				default_length);
-			field->default_value[default_length] = '\0';
+			goto add_default_value_exit;
 		}
+		strncpy(field->default_value, pSpan->zStart, default_length);
+		field->default_value[default_length] = '\0';
 	}
+add_default_value_exit:
 	sql_expr_delete(db, pSpan->pExpr, false);
 }
 
@@ -447,6 +571,8 @@ sqlAddPrimaryKey(struct Parse *pParse)
 	int nTerm;
 	struct ExprList *pList = pParse->create_index_def.cols;
 	struct space *space = pParse->create_table_def.new_space;
+	if (space == NULL)
+		space = pParse->create_column_def.space;
 	if (space == NULL)
 		goto primary_key_exit;
 	if (sql_space_primary_key(space) != NULL) {
@@ -574,8 +700,10 @@ sql_create_check_contraint(struct Parse *parser)
 		(struct alter_entity_def *) create_ck_def;
 	assert(alter_def->entity_type == ENTITY_TYPE_CK);
 	(void) alter_def;
-	struct space *space = parser->create_table_def.new_space;
-	bool is_alter = space == NULL;
+	struct space *space = parser->create_column_def.space;
+	if (space == NULL)
+		space = parser->create_table_def.new_space;
+	bool is_alter_add_constr = space == NULL;
 
 	/* Prepare payload for ck constraint definition. */
 	struct region *region = &parser->region;
@@ -589,9 +717,23 @@ sql_create_check_contraint(struct Parse *parser)
 			return;
 		}
 	} else {
-		assert(! is_alter);
-		uint32_t ck_idx = ++parser->check_count;
-		name = tt_sprintf("ck_unnamed_%s_%d", space->def->name, ck_idx);
+		assert(!is_alter_add_constr);
+		uint32_t idx = ++parser->check_count;
+		/*
+		 * If it is <ALTER TABLE ADD COLUMN> we should
+		 * count the existing CHECK constraints in the
+		 * space and form a name based on this.
+		 */
+		if (parser->create_table_def.new_space == NULL) {
+			struct space *original_space =
+				space_by_name(space->def->name);
+			assert(original_space != NULL);
+			struct rlist *checks = &original_space->ck_constraint;
+			struct ck_constraint *ck;
+			rlist_foreach_entry(ck, checks, link)
+				idx++;
+		}
+		name = tt_sprintf("ck_unnamed_%s_%d", space->def->name, idx);
 	}
 	size_t name_len = strlen(name);
 
@@ -634,7 +776,7 @@ sql_create_check_contraint(struct Parse *parser)
 	trim_space_snprintf(ck_def->expr_str, expr_str, expr_str_len);
 	memcpy(ck_def->name, name, name_len);
 	ck_def->name[name_len] = '\0';
-	if (is_alter) {
+	if (is_alter_add_constr) {
 		const char *space_name = alter_def->entity_name->a[0].zName;
 		struct space *space = space_by_name(space_name);
 		if (space == NULL) {
@@ -663,9 +805,8 @@ sql_create_check_contraint(struct Parse *parser)
 void
 sqlAddCollateType(Parse * pParse, Token * pToken)
 {
-	struct space *space = pParse->create_table_def.new_space;
-	if (space == NULL)
-		return;
+	struct space *space = pParse->create_column_def.space;
+	assert(space != NULL);
 	uint32_t i = space->def->field_count - 1;
 	sql *db = pParse->db;
 	char *coll_name = sql_name_from_token(db, pToken);
@@ -704,8 +845,7 @@ sql_column_collation(struct space_def *def, uint32_t column, uint32_t *coll_id)
 	 *
 	 * In cases mentioned above collation is fetched by id.
 	 */
-	if (space == NULL) {
-		assert(def->opts.is_ephemeral);
+	if (def->opts.is_ephemeral) {
 		assert(column < (uint32_t)def->field_count);
 		*coll_id = def->fields[column].coll_id;
 		struct coll_id *collation = coll_by_id(*coll_id);
@@ -794,7 +934,8 @@ vdbe_emit_create_index(struct Parse *parse, struct space_def *def,
 	memcpy(raw, index_parts, index_parts_sz);
 	index_parts = raw;
 
-	if (parse->create_table_def.new_space != NULL) {
+	if (parse->create_table_def.new_space != NULL ||
+	    parse->create_column_def.space != NULL) {
 		sqlVdbeAddOp2(v, OP_SCopy, space_id_reg, entry_reg);
 		sqlVdbeAddOp2(v, OP_Integer, idx_def->iid, entry_reg + 1);
 	} else {
@@ -1032,18 +1173,21 @@ vdbe_emit_fk_constraint_create(struct Parse *parse_context,
 			  P4_DYNAMIC);
 	/*
 	 * In case we are adding FK constraints during execution
-	 * of <CREATE TABLE ...> statement, we don't have child
-	 * id, but we know register where it will be stored.
+	 * of <CREATE TABLE ...> or <ALER TABLE ADD COLUMN ...>
+	 * statement, we don't have child id, but we know register
+	 * where it will be stored.
 	 */
-	if (parse_context->create_table_def.new_space != NULL) {
+	bool is_alter_add_constr =
+		parse_context->create_table_def.new_space == NULL &&
+		parse_context->create_column_def.space == NULL;
+	if (!is_alter_add_constr) {
 		sqlVdbeAddOp2(vdbe, OP_SCopy, fk->child_id,
 				  constr_tuple_reg + 1);
 	} else {
 		sqlVdbeAddOp2(vdbe, OP_Integer, fk->child_id,
 				  constr_tuple_reg + 1);
 	}
-	if (parse_context->create_table_def.new_space != NULL &&
-	    fk_constraint_is_self_referenced(fk)) {
+	if (!is_alter_add_constr && fk_constraint_is_self_referenced(fk)) {
 		sqlVdbeAddOp2(vdbe, OP_SCopy, fk->parent_id,
 				  constr_tuple_reg + 2);
 	} else {
@@ -1107,7 +1251,7 @@ vdbe_emit_fk_constraint_create(struct Parse *parse_context,
 			  constr_tuple_reg + 9);
 	sqlVdbeAddOp2(vdbe, OP_SInsert, BOX_FK_CONSTRAINT_ID,
 		      constr_tuple_reg + 9);
-	if (parse_context->create_table_def.new_space == NULL) {
+	if (is_alter_add_constr) {
 		sqlVdbeCountChanges(vdbe);
 		sqlVdbeChangeP5(vdbe, OPFLAG_NCHANGE);
 	}
@@ -1148,15 +1292,21 @@ resolve_link(struct Parse *parse_context, const struct space_def *def,
 
 /**
  * Emit code to create sequences, indexes, check and foreign key
- * constraints appeared in <CREATE TABLE>.
+ * constraints appeared in <CREATE TABLE> or
+ * <ALTER TABLE ADD COLUMN>.
  */
 static void
 sql_vdbe_create_constraints(struct Parse *parse, int reg_space_id)
 {
 	assert(reg_space_id != 0);
 	struct space *space = parse->create_table_def.new_space;
-	assert(space != NULL);
+	bool is_alter = space == NULL;
 	uint32_t i = 0;
+	if (is_alter) {
+		space = parse->create_column_def.space;
+		i = space_by_name(space->def->name)->index_count;
+	}
+	assert(space != NULL);
 	for (; i < space->index_count; ++i) {
 		struct index *idx = space->index[i];
 		vdbe_emit_create_index(parse, space->def, idx->def,
@@ -1175,6 +1325,21 @@ sql_vdbe_create_constraints(struct Parse *parse, int reg_space_id)
 		sqlVdbeAddOp2(v, OP_NextSequenceId, 0, reg_seq_id);
 		int reg_seq_rec = emitNewSysSequenceRecord(parse, reg_seq_id,
 							   space->def->name);
+		if (is_alter) {
+			int errcode = ER_SQL_CANT_ADD_AUTOINC;
+			const char *error_msg =
+				tt_sprintf(tnt_errcode_desc(errcode),
+					   space->def->name);
+			if (vdbe_emit_halt_with_presence_test(parse,
+							      BOX_SEQUENCE_ID,
+							      2,
+							      reg_seq_rec + 3,
+							      1, errcode,
+							      error_msg, false,
+							      OP_NoConflict)
+			    != 0)
+				return;
+		}
 		sqlVdbeAddOp2(v, OP_SInsert, BOX_SEQUENCE_ID, reg_seq_rec);
 		/* Do an insertion into _space_sequence. */
 		int reg_space_seq_record =
@@ -1873,24 +2038,28 @@ sql_create_foreign_key(struct Parse *parse_context)
 	char *parent_name = NULL;
 	char *constraint_name = NULL;
 	bool is_self_referenced = false;
+	struct space *space = parse_context->create_column_def.space;
 	struct create_table_def *table_def = &parse_context->create_table_def;
-	struct space *space = table_def->new_space;
+	if (space == NULL)
+		space = table_def->new_space;
 	/*
-	 * Space under construction during CREATE TABLE
-	 * processing. NULL for ALTER TABLE statement handling.
+	 * Space under construction during <CREATE TABLE>
+	 * processing or shallow copy of space during <ALTER TABLE
+	 * ... ADD COLUMN>. NULL for <ALTER TABLE ... ADD
+	 * CONSTRAINT> statement handling.
 	 */
-	bool is_alter = space == NULL;
+	bool is_alter_add_constr = space == NULL;
 	uint32_t child_cols_count;
 	struct ExprList *child_cols = create_fk_def->child_cols;
 	if (child_cols == NULL) {
-		assert(!is_alter);
+		assert(!is_alter_add_constr);
 		child_cols_count = 1;
 	} else {
 		child_cols_count = child_cols->nExpr;
 	}
 	struct ExprList *parent_cols = create_fk_def->parent_cols;
 	struct space *child_space = NULL;
-	if (is_alter) {
+	if (is_alter_add_constr) {
 		const char *child_name = alter_def->entity_name->a[0].zName;
 		child_space = space_by_name(child_name);
 		if (child_space == NULL) {
@@ -1908,6 +2077,8 @@ sql_create_foreign_key(struct Parse *parse_context)
 			goto tnt_error;
 		}
 		memset(fk_parse, 0, sizeof(*fk_parse));
+		if (parse_context->create_column_def.space != NULL)
+			child_space = space;
 		rlist_add_entry(&parse_context->fkeys, fk_parse, link);
 	}
 	struct Token *parent = create_fk_def->parent_name;
@@ -1920,28 +2091,45 @@ sql_create_foreign_key(struct Parse *parse_context)
 	 * self-referenced, but in this case parent (which is
 	 * also child) table will definitely exist.
 	 */
-	is_self_referenced = !is_alter &&
+	is_self_referenced = !is_alter_add_constr &&
 			     strcmp(parent_name, space->def->name) == 0;
 	struct space *parent_space = space_by_name(parent_name);
-	if (parent_space == NULL) {
-		if (is_self_referenced) {
-			struct fk_constraint_parse *fk =
-				rlist_first_entry(&parse_context->fkeys,
-						  struct fk_constraint_parse,
-						  link);
-			fk->selfref_cols = parent_cols;
-			fk->is_self_referenced = true;
-		} else {
-			diag_set(ClientError, ER_NO_SUCH_SPACE, parent_name);;
-			goto tnt_error;
-		}
+	if (parent_space == NULL && !is_self_referenced) {
+		diag_set(ClientError, ER_NO_SUCH_SPACE, parent_name);
+		goto tnt_error;
+	}
+	if (is_self_referenced) {
+		struct fk_constraint_parse *fk =
+			rlist_first_entry(&parse_context->fkeys,
+					  struct fk_constraint_parse,
+					  link);
+		fk->selfref_cols = parent_cols;
+		fk->is_self_referenced = true;
 	}
-	if (!is_alter) {
+	if (!is_alter_add_constr) {
 		if (create_def->name.n == 0) {
-			constraint_name =
-				sqlMPrintf(db, "fk_unnamed_%s_%d",
-					   space->def->name,
-					   ++parse_context->fkey_count);
+			uint32_t idx = ++parse_context->fkey_count;
+			/*
+			 * If it is <ALTER TABLE ADD COLUMN> we
+			 * should count the existing FK
+			 * constraints in the space and form a
+			 * name based on this.
+			 */
+			if (table_def->new_space == NULL) {
+				struct space *original_space =
+					space_by_name(space->def->name);
+				assert(original_space != NULL);
+				struct rlist *child_fk =
+					&original_space->child_fk_constraint;
+				if (!rlist_empty(child_fk)) {
+					struct fk_constraint *fk;
+					rlist_foreach_entry(fk, child_fk,
+							    in_child_space)
+						idx++;
+				}
+			}
+			constraint_name = sqlMPrintf(db, "fk_unnamed_%s_%d",
+						     space->def->name, idx);
 		} else {
 			constraint_name =
 				sql_name_from_token(db, &create_def->name);
@@ -2001,7 +2189,8 @@ sql_create_foreign_key(struct Parse *parse_context)
 	}
 	int actions = create_fk_def->actions;
 	fk_def->field_count = child_cols_count;
-	fk_def->child_id = child_space != NULL ? child_space->def->id : 0;
+	fk_def->child_id = table_def->new_space == NULL ?
+		child_space->def->id : 0;
 	fk_def->parent_id = parent_space != NULL ? parent_space->def->id : 0;
 	fk_def->is_deferred = create_constr_def->is_deferred;
 	fk_def->match = (enum fk_constraint_match) (create_fk_def->match);
@@ -2021,7 +2210,7 @@ sql_create_foreign_key(struct Parse *parse_context)
 					    constraint_name) != 0) {
 			goto exit_create_fk;
 		}
-		if (!is_alter) {
+		if (!is_alter_add_constr) {
 			if (child_cols == NULL) {
 				assert(i == 0);
 				/*
@@ -2050,12 +2239,13 @@ sql_create_foreign_key(struct Parse *parse_context)
 	memcpy(fk_def->name, constraint_name, name_len);
 	fk_def->name[name_len] = '\0';
 	/*
-	 * In case of CREATE TABLE processing, all foreign keys
-	 * constraints must be created after space itself, so
-	 * lets delay it until sqlEndTable() call and simply
+	 * In case of <CREATE TABLE> or <ALTER TABLE ... ADD
+	 * COLUMN> processing, all foreign keys  constraints  must
+	 * be created after space itself, so lets delay it until
+	 * sqlEndTable() or sql_add_column_end() call and simply
 	 * maintain list of all FK constraints inside parser.
 	 */
-	if (!is_alter) {
+	if (!is_alter_add_constr) {
 		struct fk_constraint_parse *fk_parse =
 			rlist_first_entry(&parse_context->fkeys,
 					  struct fk_constraint_parse, link);
@@ -2407,7 +2597,10 @@ sql_create_index(struct Parse *parse) {
 	 * Find the table that is to be indexed.
 	 * Return early if not found.
 	 */
-	struct space *space = NULL;
+	struct space *space = parse->create_table_def.new_space;
+	if (space == NULL)
+		space = parse->create_column_def.space;
+	bool is_create_table_or_add_col = space != NULL;
 	struct Token token = create_entity_def->name;
 	if (tbl_name != NULL) {
 		assert(token.n > 0 && token.z != NULL);
@@ -2420,10 +2613,8 @@ sql_create_index(struct Parse *parse) {
 			}
 			goto exit_create_index;
 		}
-	} else {
-		if (parse->create_table_def.new_space == NULL)
-			goto exit_create_index;
-		space = parse->create_table_def.new_space;
+	} else if (space == NULL) {
+		goto exit_create_index;
 	}
 	struct space_def *def = space->def;
 
@@ -2458,7 +2649,7 @@ sql_create_index(struct Parse *parse) {
 	 * 2) UNIQUE constraint is non-named and standard
 	 *    auto-index name will be generated.
 	 */
-	if (parse->create_table_def.new_space == NULL) {
+	if (!is_create_table_or_add_col) {
 		assert(token.z != NULL);
 		name = sql_name_from_token(db, &token);
 		if (name == NULL) {
@@ -2624,7 +2815,7 @@ sql_create_index(struct Parse *parse) {
 	 * constraint, but has different onError (behavior on
 	 * constraint violation), then an error is raised.
 	 */
-	if (parse->create_table_def.new_space != NULL) {
+	if (is_create_table_or_add_col) {
 		for (uint32_t i = 0; i < space->index_count; ++i) {
 			struct index *existing_idx = space->index[i];
 			uint32_t iid = existing_idx->def->iid;
@@ -2712,7 +2903,7 @@ sql_create_index(struct Parse *parse) {
 		sqlVdbeAddOp0(vdbe, OP_Expire);
 	}
 
-	if (tbl_name != NULL)
+	if (!is_create_table_or_add_col)
 		goto exit_create_index;
 	table_add_index(space, index);
 	index = NULL;
diff --git a/src/box/sql/parse.y b/src/box/sql/parse.y
index 995875566..0c9887851 100644
--- a/src/box/sql/parse.y
+++ b/src/box/sql/parse.y
@@ -226,19 +226,24 @@ create_table_end ::= . { sqlEndTable(pParse); }
  */
 
 columnlist ::= columnlist COMMA tcons.
-columnlist ::= columnlist COMMA columnname carglist autoinc(I). {
-  uint32_t fieldno = pParse->create_table_def.new_space->def->field_count - 1;
-  if (I == 1 && sql_add_autoincrement(pParse, fieldno) != 0)
-    return;
+columnlist ::= columnlist COMMA column_def create_column_end.
+columnlist ::= column_def create_column_end.
+
+column_def ::= column_name_and_type carglist.
+
+column_name_and_type ::= nm(A) typedef(Y). {
+  create_column_def_init(&pParse->create_column_def, NULL, &A, &Y);
+  sql_create_column_start(pParse);
 }
 
-columnlist ::= columnname carglist autoinc(I). {
-  uint32_t fieldno = pParse->create_table_def.new_space->def->field_count - 1;
+create_column_end ::= autoinc(I). {
+  uint32_t fieldno = pParse->create_column_def.space->def->field_count - 1;
   if (I == 1 && sql_add_autoincrement(pParse, fieldno) != 0)
     return;
+  if (pParse->create_table_def.new_space == NULL)
+    sql_create_column_end(pParse);
 }
 columnlist ::= tcons.
-columnname(A) ::= nm(A) typedef(Y). {sqlAddColumn(pParse,&A,&Y);}
 
 // An IDENTIFIER can be a generic identifier, or one of several
 // keywords.  Any non-standard keyword can also be an identifier.
@@ -281,9 +286,11 @@ nm(A) ::= id(A). {
   }
 }
 
-// "carglist" is a list of additional constraints that come after the
-// column name and column type in a CREATE TABLE statement.
-//
+/*
+ * "carglist" is a list of additional constraints and clauses that
+ * come after the column name and column type in a <CREATE TABLE>
+ * or <ALTER TABLE ADD COLUMN> statement.
+ */
 carglist ::= carglist ccons.
 carglist ::= .
 %type cconsname { struct Token }
@@ -1735,11 +1742,28 @@ alter_table_start(A) ::= ALTER TABLE fullname(T) . { A = T; }
 
 %type alter_add_constraint {struct alter_args}
 alter_add_constraint(A) ::= alter_table_start(T) ADD CONSTRAINT nm(N). {
+   A.table_name = T;
+   A.name = N;
+   pParse->initiateTTrans = true;
+ }
+
+%type alter_add_column {struct alter_args}
+alter_add_column(A) ::= alter_table_start(T) ADD column_name(N). {
   A.table_name = T;
   A.name = N;
   pParse->initiateTTrans = true;
 }
 
+column_name(N) ::= COLUMN nm(A). { N = A; }
+column_name(N) ::= nm(A). { N = A; }
+
+cmd ::= alter_column_def carglist create_column_end.
+
+alter_column_def ::= alter_add_column(N) typedef(Y). {
+  create_column_def_init(&pParse->create_column_def, N.table_name, &N.name, &Y);
+  sql_create_column_start(pParse);
+}
+
 cmd ::= alter_add_constraint(N) FOREIGN KEY LP eidlist(FA) RP REFERENCES
         nm(T) eidlist_opt(TA) matcharg(M) refargs(R) defer_subclause_opt(D). {
   create_fk_def_init(&pParse->create_fk_def, N.table_name, &N.name, FA, &T, TA,
diff --git a/src/box/sql/parse_def.h b/src/box/sql/parse_def.h
index 1105fda6e..336914c57 100644
--- a/src/box/sql/parse_def.h
+++ b/src/box/sql/parse_def.h
@@ -35,6 +35,7 @@
 #include "box/fk_constraint.h"
 #include "box/key_def.h"
 #include "box/sql.h"
+#include "box/constraint_id.h"
 
 /**
  * This file contains auxiliary structures and functions which
@@ -154,6 +155,7 @@ enum sql_index_type {
 
 enum entity_type {
 	ENTITY_TYPE_TABLE = 0,
+	ENTITY_TYPE_COLUMN,
 	ENTITY_TYPE_VIEW,
 	ENTITY_TYPE_INDEX,
 	ENTITY_TYPE_TRIGGER,
@@ -207,6 +209,14 @@ struct create_table_def {
 	struct space *new_space;
 };
 
+struct create_column_def {
+	struct create_entity_def base;
+	/** Shallow space_def copy. */
+	struct space *space;
+	/** Column type. */
+	struct type_def *type_def;
+};
+
 struct create_view_def {
 	struct create_entity_def base;
 	/**
@@ -464,6 +474,16 @@ create_table_def_init(struct create_table_def *table_def, struct Token *name,
 			       if_not_exists);
 }
 
+static inline void
+create_column_def_init(struct create_column_def *column_def,
+		       struct SrcList *table_name, struct Token *name,
+		       struct type_def *type_def)
+{
+	create_entity_def_init(&column_def->base, ENTITY_TYPE_COLUMN,
+			       table_name, name, false);
+	column_def->type_def = type_def;
+}
+
 static inline void
 create_view_def_init(struct create_view_def *view_def, struct Token *name,
 		     struct Token *create, struct ExprList *aliases,
diff --git a/src/box/sql/sqlInt.h b/src/box/sql/sqlInt.h
index fa87e7bd2..32142a871 100644
--- a/src/box/sql/sqlInt.h
+++ b/src/box/sql/sqlInt.h
@@ -2251,22 +2251,26 @@ struct Parse {
 		struct enable_entity_def enable_entity_def;
 	};
 	/**
-	 * Table def is not part of union since information
-	 * being held must survive till the end of parsing of
-	 * whole CREATE TABLE statement (to pass it to
-	 * sqlEndTable() function).
+	 * Table def or column def is not part of union since
+	 * information being held must survive till the end of
+	 * parsing of whole <CREATE TABLE> or
+	 * <ALTER TABLE ADD COLUMN> statement (to pass it to
+	 * sqlEndTable() sql_create_column_end() function).
 	 */
 	struct create_table_def create_table_def;
+	struct create_column_def create_column_def;
 	/*
-	 * FK and CK constraints appeared in a <CREATE TABLE>.
+	 * FK and CK constraints appeared in a <CREATE TABLE> or
+	 * an <ALTER TABLE ADD COLUMN> statement.
 	 */
 	struct rlist fkeys;
 	struct rlist checks;
 	uint32_t fkey_count;
 	uint32_t check_count;
 	/*
-	 * True, if column within a <CREATE TABLE> statement to be
-	 * created has <AUTOINCREMENT>.
+	 * True, if column in a <CREATE TABLE> or an
+	 * <ALTER TABLE ADD COLUMN> statement to be created has
+	 * <AUTOINCREMENT>.
 	 */
 	bool has_autoinc;
 	/* Id of field with <AUTOINCREMENT>. */
@@ -2860,15 +2864,30 @@ struct space *sqlResultSetOfSelect(Parse *, Select *);
 
 struct space *
 sqlStartTable(Parse *, Token *);
-void sqlAddColumn(Parse *, Token *, struct type_def *);
+
+/**
+ * Add new field to the format of ephemeral space in
+ * create_table_def. If it is <ALTER TABLE> create shallow copy of
+ * the existing space and add field to its format.
+ */
+void
+sql_create_column_start(struct Parse *parse);
+
+/**
+ * Emit code to update entry in _space and code to create
+ * constraints (entries in _index, _ck_constraint, _fk_constraint)
+ * described with this column.
+ */
+void
+sql_create_column_end(struct Parse *parse);
 
 /**
  * This routine is called by the parser while in the middle of
- * parsing a CREATE TABLE statement.  A "NOT NULL" constraint has
- * been seen on a column.  This routine sets the is_nullable flag
- * on the column currently under construction.
- * If nullable_action has been already set, this function raises
- * an error.
+ * parsing a <CREATE TABLE> or a <ALTER TABLE ADD COLUMN>
+ * statement. A "NOT NULL" constraint has been seen on a column.
+ * This routine sets the is_nullable flag on the column currently
+ * under construction. If nullable_action has been already set,
+ * this function raises an error.
  *
  * @param parser SQL Parser object.
  * @param nullable_action on_conflict_action value.
diff --git a/test/box/error.result b/test/box/error.result
index cdecdb221..6fc3cb99f 100644
--- a/test/box/error.result
+++ b/test/box/error.result
@@ -437,6 +437,8 @@ t;
  |   216: box.error.SYNC_QUORUM_TIMEOUT
  |   217: box.error.SYNC_ROLLBACK
  |   218: box.error.TUPLE_METADATA_IS_TOO_BIG
+ |   219: box.error.SQL_CANT_ADD_COLUMN_TO_VIEW
+ |   220: box.error.SQL_CANT_ADD_AUTOINC
  | ...
 
 test_run:cmd("setopt delimiter ''");
diff --git a/test/sql/add-column.result b/test/sql/add-column.result
new file mode 100644
index 000000000..f86259105
--- /dev/null
+++ b/test/sql/add-column.result
@@ -0,0 +1,471 @@
+-- test-run result file version 2
+--
+-- gh-3075: Check <ALTER TABLE table ADD COLUMN column> statement.
+--
+CREATE TABLE t1 (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- COLUMN keyword is optional. Check it here, but omit it below.
+--
+ALTER TABLE t1 ADD COLUMN b INT;
+ | ---
+ | - row_count: 0
+ | ...
+
+--
+-- A column with the same name already exists.
+--
+ALTER TABLE t1 ADD b SCALAR;
+ | ---
+ | - null
+ | - Space field 'B' is duplicate
+ | ...
+
+--
+-- Can't add column to a view.
+--
+CREATE VIEW v AS SELECT * FROM t1;
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE v ADD b INT;
+ | ---
+ | - null
+ | - Can't add column 'B'. 'V' is a view
+ | ...
+DROP VIEW v;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check PRIMARY KEY constraint works with an added column.
+--
+CREATE TABLE pk_check (a INT CONSTRAINT pk PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE pk_check DROP CONSTRAINT pk;
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE pk_check ADD b INT PRIMARY KEY;
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO pk_check VALUES (1, 1);
+ | ---
+ | - row_count: 1
+ | ...
+INSERT INTO pk_check VALUES (1, 1);
+ | ---
+ | - null
+ | - Duplicate key exists in unique index 'pk_unnamed_PK_CHECK_1' in space 'PK_CHECK'
+ | ...
+DROP TABLE pk_check;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check UNIQUE constraint works with an added column.
+--
+CREATE TABLE unique_check (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE unique_check ADD b INT UNIQUE;
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO unique_check VALUES (1, 1);
+ | ---
+ | - row_count: 1
+ | ...
+INSERT INTO unique_check VALUES (2, 1);
+ | ---
+ | - null
+ | - Duplicate key exists in unique index 'unique_unnamed_UNIQUE_CHECK_2' in space 'UNIQUE_CHECK'
+ | ...
+DROP TABLE unique_check;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check CHECK constraint works with an added column.
+--
+CREATE TABLE ck_check (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE ck_check ADD b INT CHECK (b > 0);
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO ck_check VALUES (1, 0);
+ | ---
+ | - null
+ | - 'Check constraint failed ''ck_unnamed_CK_CHECK_1'': b > 0'
+ | ...
+DROP TABLE ck_check;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check FOREIGN KEY constraint works with an added column.
+--
+CREATE TABLE fk_check (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE fk_check ADD b INT REFERENCES t1(a);
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO fk_check VALUES (0, 1);
+ | ---
+ | - null
+ | - 'Failed to execute SQL statement: FOREIGN KEY constraint failed'
+ | ...
+INSERT INTO fk_check VALUES (2, 0);
+ | ---
+ | - null
+ | - 'Failed to execute SQL statement: FOREIGN KEY constraint failed'
+ | ...
+INSERT INTO fk_check VALUES (2, 1);
+ | ---
+ | - null
+ | - 'Failed to execute SQL statement: FOREIGN KEY constraint failed'
+ | ...
+DROP TABLE fk_check;
+ | ---
+ | - row_count: 1
+ | ...
+DROP TABLE t1;
+ | ---
+ | - row_count: 1
+ | ...
+--
+-- Check FOREIGN KEY (self-referenced) constraint works with an
+-- added column.
+--
+CREATE TABLE self (id INT PRIMARY KEY AUTOINCREMENT, a INT UNIQUE)
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE self ADD b INT REFERENCES self(a)
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO self(a,b) VALUES(1, 1);
+ | ---
+ | - autoincrement_ids:
+ |   - 1
+ |   row_count: 1
+ | ...
+UPDATE self SET a = 2, b = 2;
+ | ---
+ | - row_count: 1
+ | ...
+UPDATE self SET b = 3;
+ | ---
+ | - null
+ | - 'Failed to execute SQL statement: FOREIGN KEY constraint failed'
+ | ...
+UPDATE self SET a = 3;
+ | ---
+ | - null
+ | - 'Failed to execute SQL statement: FOREIGN KEY constraint failed'
+ | ...
+DROP TABLE self;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check AUTOINCREMENT works with an added column.
+--
+CREATE TABLE autoinc_check (a INT CONSTRAINT pk PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE autoinc_check DROP CONSTRAINT pk;
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE autoinc_check ADD b INT PRIMARY KEY AUTOINCREMENT;
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO autoinc_check(a) VALUES(1);
+ | ---
+ | - autoincrement_ids:
+ |   - 1
+ |   row_count: 1
+ | ...
+INSERT INTO autoinc_check(a) VALUES(1);
+ | ---
+ | - autoincrement_ids:
+ |   - 2
+ |   row_count: 1
+ | ...
+TRUNCATE TABLE autoinc_check;
+ | ---
+ | - row_count: 0
+ | ...
+
+--
+-- Can't add second column with AUTOINCREMENT.
+--
+ALTER TABLE autoinc_check ADD c INT AUTOINCREMENT;
+ | ---
+ | - null
+ | - 'Can''t add AUTOINCREMENT: the space ''AUTOINC_CHECK'' already has one auto incremented
+ |   field'
+ | ...
+DROP TABLE autoinc_check;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check COLLATE clause works with an added column.
+--
+CREATE TABLE collate_check (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE collate_check ADD b TEXT COLLATE "unicode_ci";
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO collate_check VALUES (1, 'a');
+ | ---
+ | - row_count: 1
+ | ...
+INSERT INTO collate_check VALUES (2, 'A');
+ | ---
+ | - row_count: 1
+ | ...
+SELECT * FROM collate_check WHERE b LIKE 'a';
+ | ---
+ | - metadata:
+ |   - name: A
+ |     type: integer
+ |   - name: B
+ |     type: string
+ |   rows:
+ |   - [1, 'a']
+ |   - [2, 'A']
+ | ...
+DROP TABLE collate_check;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check DEFAULT clause works with an added column.
+--
+CREATE TABLE default_check (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE default_check ADD b TEXT DEFAULT ('a');
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO default_check(a) VALUES (1);
+ | ---
+ | - row_count: 1
+ | ...
+SELECT * FROM default_check;
+ | ---
+ | - metadata:
+ |   - name: A
+ |     type: integer
+ |   - name: B
+ |     type: string
+ |   rows:
+ |   - [1, 'a']
+ | ...
+DROP TABLE default_check;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check NULL constraint works with an added column.
+--
+CREATE TABLE null_check (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE null_check ADD b TEXT NULL;
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO null_check(a) VALUES (1);
+ | ---
+ | - row_count: 1
+ | ...
+DROP TABLE null_check;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Check NOT NULL constraint works with an added column.
+--
+CREATE TABLE notnull_check (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE notnull_check ADD b TEXT NOT NULL;
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO notnull_check(a) VALUES (1);
+ | ---
+ | - null
+ | - 'Failed to execute SQL statement: NOT NULL constraint failed: NOTNULL_CHECK.B'
+ | ...
+DROP TABLE notnull_check;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Can't add a column with DEAFULT or NULL to a non-empty space.
+-- This ability isn't implemented yet.
+--
+CREATE TABLE non_empty (a INT PRIMARY KEY);
+ | ---
+ | - row_count: 1
+ | ...
+INSERT INTO non_empty VALUES (1);
+ | ---
+ | - row_count: 1
+ | ...
+ALTER TABLE non_empty ADD b INT NULL;
+ | ---
+ | - null
+ | - Tuple field count 1 does not match space field count 2
+ | ...
+ALTER TABLE non_empty ADD b INT DEFAULT (1);
+ | ---
+ | - null
+ | - Tuple field count 1 does not match space field count 2
+ | ...
+DROP TABLE non_empty;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Add to a no-SQL adjusted space without format.
+--
+\set language lua
+ | ---
+ | - true
+ | ...
+_ = box.schema.space.create('WITHOUT_FORMAT')
+ | ---
+ | ...
+\set language sql
+ | ---
+ | - true
+ | ...
+ALTER TABLE without_format ADD a INT PRIMARY KEY;
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO without_format VALUES (1);
+ | ---
+ | - row_count: 1
+ | ...
+DROP TABLE without_format;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Add to a no-SQL adjusted space with format.
+--
+\set language lua
+ | ---
+ | - true
+ | ...
+with_format = box.schema.space.create('WITH_FORMAT')
+ | ---
+ | ...
+with_format:format{{name = 'A', type = 'unsigned'}}
+ | ---
+ | ...
+\set language sql
+ | ---
+ | - true
+ | ...
+ALTER TABLE with_format ADD b INT PRIMARY KEY;
+ | ---
+ | - row_count: 0
+ | ...
+INSERT INTO with_format VALUES (1, 1);
+ | ---
+ | - row_count: 1
+ | ...
+DROP TABLE with_format;
+ | ---
+ | - row_count: 1
+ | ...
+
+--
+-- Add multiple columns (with a constraint) inside a transaction.
+--
+CREATE TABLE t2 (a INT PRIMARY KEY)
+ | ---
+ | - row_count: 1
+ | ...
+\set language lua
+ | ---
+ | - true
+ | ...
+box.begin()                                                                     \
+box.execute('ALTER TABLE t2 ADD b INT')                                         \
+box.execute('ALTER TABLE t2 ADD c INT UNIQUE')                                  \
+box.commit()
+ | ---
+ | ...
+\set language sql
+ | ---
+ | - true
+ | ...
+INSERT INTO t2 VALUES (1, 1, 1);
+ | ---
+ | - row_count: 1
+ | ...
+INSERT INTO t2 VALUES (2, 1, 1);
+ | ---
+ | - null
+ | - Duplicate key exists in unique index 'unique_unnamed_T2_2' in space 'T2'
+ | ...
+SELECT * FROM t2;
+ | ---
+ | - metadata:
+ |   - name: A
+ |     type: integer
+ |   - name: B
+ |     type: integer
+ |   - name: C
+ |     type: integer
+ |   rows:
+ |   - [1, 1, 1]
+ | ...
+DROP TABLE t2;
+ | ---
+ | - row_count: 1
+ | ...
diff --git a/test/sql/add-column.test.sql b/test/sql/add-column.test.sql
new file mode 100644
index 000000000..f8ab3f756
--- /dev/null
+++ b/test/sql/add-column.test.sql
@@ -0,0 +1,167 @@
+--
+-- gh-3075: Check <ALTER TABLE table ADD COLUMN column> statement.
+--
+CREATE TABLE t1 (a INT PRIMARY KEY);
+
+--
+-- COLUMN keyword is optional. Check it here, but omit it below.
+--
+ALTER TABLE t1 ADD COLUMN b INT;
+
+--
+-- A column with the same name already exists.
+--
+ALTER TABLE t1 ADD b SCALAR;
+
+--
+-- Can't add column to a view.
+--
+CREATE VIEW v AS SELECT * FROM t1;
+ALTER TABLE v ADD b INT;
+DROP VIEW v;
+
+--
+-- Check PRIMARY KEY constraint works with an added column.
+--
+CREATE TABLE pk_check (a INT CONSTRAINT pk PRIMARY KEY);
+ALTER TABLE pk_check DROP CONSTRAINT pk;
+ALTER TABLE pk_check ADD b INT PRIMARY KEY;
+INSERT INTO pk_check VALUES (1, 1);
+INSERT INTO pk_check VALUES (1, 1);
+DROP TABLE pk_check;
+
+--
+-- Check UNIQUE constraint works with an added column.
+--
+CREATE TABLE unique_check (a INT PRIMARY KEY);
+ALTER TABLE unique_check ADD b INT UNIQUE;
+INSERT INTO unique_check VALUES (1, 1);
+INSERT INTO unique_check VALUES (2, 1);
+DROP TABLE unique_check;
+
+--
+-- Check CHECK constraint works with an added column.
+--
+CREATE TABLE ck_check (a INT PRIMARY KEY);
+ALTER TABLE ck_check ADD b INT CHECK (b > 0);
+INSERT INTO ck_check VALUES (1, 0);
+DROP TABLE ck_check;
+
+--
+-- Check FOREIGN KEY constraint works with an added column.
+--
+CREATE TABLE fk_check (a INT PRIMARY KEY);
+ALTER TABLE fk_check ADD b INT REFERENCES t1(a);
+INSERT INTO fk_check VALUES (0, 1);
+INSERT INTO fk_check VALUES (2, 0);
+INSERT INTO fk_check VALUES (2, 1);
+DROP TABLE fk_check;
+DROP TABLE t1;
+--
+-- Check FOREIGN KEY (self-referenced) constraint works with an
+-- added column.
+--
+CREATE TABLE self (id INT PRIMARY KEY AUTOINCREMENT, a INT UNIQUE)
+ALTER TABLE self ADD b INT REFERENCES self(a)
+INSERT INTO self(a,b) VALUES(1, 1);
+UPDATE self SET a = 2, b = 2;
+UPDATE self SET b = 3;
+UPDATE self SET a = 3;
+DROP TABLE self;
+
+--
+-- Check AUTOINCREMENT works with an added column.
+--
+CREATE TABLE autoinc_check (a INT CONSTRAINT pk PRIMARY KEY);
+ALTER TABLE autoinc_check DROP CONSTRAINT pk;
+ALTER TABLE autoinc_check ADD b INT PRIMARY KEY AUTOINCREMENT;
+INSERT INTO autoinc_check(a) VALUES(1);
+INSERT INTO autoinc_check(a) VALUES(1);
+TRUNCATE TABLE autoinc_check;
+
+--
+-- Can't add second column with AUTOINCREMENT.
+--
+ALTER TABLE autoinc_check ADD c INT AUTOINCREMENT;
+DROP TABLE autoinc_check;
+
+--
+-- Check COLLATE clause works with an added column.
+--
+CREATE TABLE collate_check (a INT PRIMARY KEY);
+ALTER TABLE collate_check ADD b TEXT COLLATE "unicode_ci";
+INSERT INTO collate_check VALUES (1, 'a');
+INSERT INTO collate_check VALUES (2, 'A');
+SELECT * FROM collate_check WHERE b LIKE 'a';
+DROP TABLE collate_check;
+
+--
+-- Check DEFAULT clause works with an added column.
+--
+CREATE TABLE default_check (a INT PRIMARY KEY);
+ALTER TABLE default_check ADD b TEXT DEFAULT ('a');
+INSERT INTO default_check(a) VALUES (1);
+SELECT * FROM default_check;
+DROP TABLE default_check;
+
+--
+-- Check NULL constraint works with an added column.
+--
+CREATE TABLE null_check (a INT PRIMARY KEY);
+ALTER TABLE null_check ADD b TEXT NULL;
+INSERT INTO null_check(a) VALUES (1);
+DROP TABLE null_check;
+
+--
+-- Check NOT NULL constraint works with an added column.
+--
+CREATE TABLE notnull_check (a INT PRIMARY KEY);
+ALTER TABLE notnull_check ADD b TEXT NOT NULL;
+INSERT INTO notnull_check(a) VALUES (1);
+DROP TABLE notnull_check;
+
+--
+-- Can't add a column with DEAFULT or NULL to a non-empty space.
+-- This ability isn't implemented yet.
+--
+CREATE TABLE non_empty (a INT PRIMARY KEY);
+INSERT INTO non_empty VALUES (1);
+ALTER TABLE non_empty ADD b INT NULL;
+ALTER TABLE non_empty ADD b INT DEFAULT (1);
+DROP TABLE non_empty;
+
+--
+-- Add to a no-SQL adjusted space without format.
+--
+\set language lua
+_ = box.schema.space.create('WITHOUT_FORMAT')
+\set language sql
+ALTER TABLE without_format ADD a INT PRIMARY KEY;
+INSERT INTO without_format VALUES (1);
+DROP TABLE without_format;
+
+--
+-- Add to a no-SQL adjusted space with format.
+--
+\set language lua
+with_format = box.schema.space.create('WITH_FORMAT')
+with_format:format{{name = 'A', type = 'unsigned'}}
+\set language sql
+ALTER TABLE with_format ADD b INT PRIMARY KEY;
+INSERT INTO with_format VALUES (1, 1);
+DROP TABLE with_format;
+
+--
+-- Add multiple columns (with a constraint) inside a transaction.
+--
+CREATE TABLE t2 (a INT PRIMARY KEY)
+\set language lua
+box.begin()                                                                     \
+box.execute('ALTER TABLE t2 ADD b INT')                                         \
+box.execute('ALTER TABLE t2 ADD c INT UNIQUE')                                  \
+box.commit()
+\set language sql
+INSERT INTO t2 VALUES (1, 1, 1);
+INSERT INTO t2 VALUES (2, 1, 1);
+SELECT * FROM t2;
+DROP TABLE t2;
diff --git a/test/sql/checks.result b/test/sql/checks.result
index 7b18e5d6b..513ed1b62 100644
--- a/test/sql/checks.result
+++ b/test/sql/checks.result
@@ -856,6 +856,26 @@ box.execute("DROP TABLE t6")
 ---
 - row_count: 1
 ...
+--
+-- gh-3075: Check the auto naming of CHECK constraints in
+-- <ALTER TABLE ADD COLUMN>.
+--
+box.execute("CREATE TABLE check_naming (a INT PRIMARY KEY CHECK (a > 0))")
+---
+- row_count: 1
+...
+box.execute("ALTER TABLE check_naming ADD b INT CHECK (b > 0)")
+---
+- row_count: 0
+...
+box.execute("ALTER TABLE check_naming DROP CONSTRAINT \"ck_unnamed_CHECK_NAMING_2\"")
+---
+- row_count: 1
+...
+box.execute("DROP TABLE check_naming")
+---
+- row_count: 1
+...
 test_run:cmd("clear filter")
 ---
 - true
diff --git a/test/sql/checks.test.lua b/test/sql/checks.test.lua
index 301f8ea69..a79131466 100644
--- a/test/sql/checks.test.lua
+++ b/test/sql/checks.test.lua
@@ -280,4 +280,13 @@ box.func.MYFUNC:drop()
 box.execute("INSERT INTO t6 VALUES(11);");
 box.execute("DROP TABLE t6")
 
+--
+-- gh-3075: Check the auto naming of CHECK constraints in
+-- <ALTER TABLE ADD COLUMN>.
+--
+box.execute("CREATE TABLE check_naming (a INT PRIMARY KEY CHECK (a > 0))")
+box.execute("ALTER TABLE check_naming ADD b INT CHECK (b > 0)")
+box.execute("ALTER TABLE check_naming DROP CONSTRAINT \"ck_unnamed_CHECK_NAMING_2\"")
+box.execute("DROP TABLE check_naming")
+
 test_run:cmd("clear filter")
diff --git a/test/sql/foreign-keys.result b/test/sql/foreign-keys.result
index 33689a06e..de2a0c512 100644
--- a/test/sql/foreign-keys.result
+++ b/test/sql/foreign-keys.result
@@ -499,5 +499,33 @@ box.space.S:drop()
 box.space.T:drop()
 ---
 ...
+--
+-- gh-3075: Check the auto naming of FOREIGN KEY constraints in
+-- <ALTER TABLE ADD COLUMN>.
+--
+box.execute("CREATE TABLE t1 (a INT PRIMARY KEY)")
+---
+- row_count: 1
+...
+box.execute("CREATE TABLE check_naming (a INT PRIMARY KEY REFERENCES t1(a))")
+---
+- row_count: 1
+...
+box.execute("ALTER TABLE check_naming ADD b INT REFERENCES t1(a)")
+---
+- row_count: 0
+...
+box.execute("ALTER TABLE check_naming DROP CONSTRAINT \"fk_unnamed_CHECK_NAMING_2\"")
+---
+- row_count: 1
+...
+box.execute("DROP TABLE check_naming")
+---
+- row_count: 1
+...
+box.execute("DROP TABLE t1")
+---
+- row_count: 1
+...
 --- Clean-up SQL DD hash.
 -test_run:cmd('restart server default with cleanup=1')
diff --git a/test/sql/foreign-keys.test.lua b/test/sql/foreign-keys.test.lua
index d2dd88d28..29918c5d4 100644
--- a/test/sql/foreign-keys.test.lua
+++ b/test/sql/foreign-keys.test.lua
@@ -209,5 +209,16 @@ box.space.T:select()
 box.space.S:drop()
 box.space.T:drop()
 
+--
+-- gh-3075: Check the auto naming of FOREIGN KEY constraints in
+-- <ALTER TABLE ADD COLUMN>.
+--
+box.execute("CREATE TABLE t1 (a INT PRIMARY KEY)")
+box.execute("CREATE TABLE check_naming (a INT PRIMARY KEY REFERENCES t1(a))")
+box.execute("ALTER TABLE check_naming ADD b INT REFERENCES t1(a)")
+box.execute("ALTER TABLE check_naming DROP CONSTRAINT \"fk_unnamed_CHECK_NAMING_2\"")
+box.execute("DROP TABLE check_naming")
+box.execute("DROP TABLE t1")
+
 --- Clean-up SQL DD hash.
 -test_run:cmd('restart server default with cleanup=1')
-- 
2.21.0 (Apple Git-122)