[tarantool-patches] [PATCH v4 4/4] sql: do not increase row-count if INSERT or REPLACE failed

[imeevma@tarantool.org]

If INSERT statement is executed with IGNORE error action (i.e.
INSERT OR IGNORE ...), it will return number of rows inserted.
For example:

CREATE TABLE t (i INT PRIMARY KEY, a INT check (a > 0));
INSERT OR IGNORE INTO t VALUES (1, 1), (2, -1), (3, 2);

Should return:
---
- row_count: 2
...

However it was three before this patch. So, let's account number
of successful insertions in case of INSERT or REPLACE.

Follow-up #4188
---
 src/box/sql/vdbe.c          | 18 ++++++++++--------
 test/sql/row-count.result   | 30 ++++++++++++++++++++++++++++++
 test/sql/row-count.test.lua |  8 ++++++++
 3 files changed, 48 insertions(+), 8 deletions(-)

diff --git a/src/box/sql/vdbe.c b/src/box/sql/vdbe.c
index 3b38bc2..02f35c4 100644
--- a/src/box/sql/vdbe.c
+++ b/src/box/sql/vdbe.c
@@ -4189,8 +4189,6 @@ case OP_IdxReplace:
 case OP_IdxInsert: {
 	pIn2 = &aMem[pOp->p1];
 	assert((pIn2->flags & MEM_Blob) != 0);
-	if (pOp->p5 & OPFLAG_NCHANGE)
-		p->nChange++;
 	if (ExpandBlob(pIn2) != 0)
 		goto abort_due_to_error;
 	struct space *space;
@@ -4213,12 +4211,16 @@ case OP_IdxInsert: {
 		rc = tarantoolsqlEphemeralInsert(space, pIn2->z,
 						     pIn2->z + pIn2->n);
 	}
-	if (rc == 0 && pOp->p3 > 0 && ((aMem[pOp->p3].flags) & MEM_Null) != 0) {
-		assert(space->sequence != NULL);
-		int64_t value;
-		if (sequence_get_value(space->sequence, &value) != 0)
-			goto abort_due_to_error;
-		vdbe_add_new_autoinc_id(p, value);
+	if (rc == 0) {
+		if (pOp->p5 & OPFLAG_NCHANGE)
+			p->nChange++;
+		if (pOp->p3 > 0 && ((aMem[pOp->p3].flags) & MEM_Null) != 0) {
+			assert(space->sequence != NULL);
+			int64_t value;
+			if (sequence_get_value(space->sequence, &value) != 0)
+				goto abort_due_to_error;
+			vdbe_add_new_autoinc_id(p, value);
+		}
 	}
 
 	if (pOp->p5 & OPFLAG_OE_IGNORE) {
diff --git a/test/sql/row-count.result b/test/sql/row-count.result
index e7841ca..69bfb78 100644
--- a/test/sql/row-count.result
+++ b/test/sql/row-count.result
@@ -335,3 +335,33 @@ box.execute("DROP TABLE t1;")
 ---
 - row_count: 1
 ...
+--
+-- gh-4188: check that generated IDs is not showed for failed
+-- insertions in case of INSERT OR IGNORE.
+--
+box.execute("CREATE TABLE t (i INT PRIMARY KEY AUTOINCREMENT, a INT check (a > 0));")
+---
+- row_count: 1
+...
+box.execute("INSERT OR IGNORE INTO t VALUES (null, 1), (null, -1), (null, 2);")
+---
+- autoincrement_ids:
+  - 1
+  - 3
+  row_count: 2
+...
+box.execute("SELECT * FROM t;")
+---
+- metadata:
+  - name: I
+    type: integer
+  - name: A
+    type: integer
+  rows:
+  - [1, 1]
+  - [3, 2]
+...
+box.execute("DROP TABLE t;")
+---
+- row_count: 1
+...
diff --git a/test/sql/row-count.test.lua b/test/sql/row-count.test.lua
index 9f5215c..965408e 100644
--- a/test/sql/row-count.test.lua
+++ b/test/sql/row-count.test.lua
@@ -73,3 +73,11 @@ box.execute("DROP TABLE t2;")
 box.execute("DROP TABLE t3;")
 box.execute("DROP TABLE t1;")
 
+--
+-- gh-4188: check that generated IDs is not showed for failed
+-- insertions in case of INSERT OR IGNORE.
+--
+box.execute("CREATE TABLE t (i INT PRIMARY KEY AUTOINCREMENT, a INT check (a > 0));")
+box.execute("INSERT OR IGNORE INTO t VALUES (null, 1), (null, -1), (null, 2);")
+box.execute("SELECT * FROM t;")
+box.execute("DROP TABLE t;")
-- 
2.7.4