[tarantool-patches] Re: [PATCH 2/2] sql: statistics removal after dropping an index

[Hollow111]

Hello. Changes have been made.
Diff:

diff --git a/src/box/sql/build.c b/src/box/sql/build.c
index 92f3cb6..ce5878c 100644
--- a/src/box/sql/build.c
+++ b/src/box/sql/build.c
@@ -2129,18 +2129,32 @@ sqliteViewResetAll(sqlite3 * db)
  * Remove entries from the _sql_stat1 and _sql_stat4
  * system spaces after a DROP INDEX or DROP TABLE command.
  *
- * @param pParse Parsing context.
- * @param zType Type of entry to be deleted:
- * 'idx' or 'tbl' string literal.
- * @param zName Name of index or table.
+ * @param parse      The parsing context.
+ * @param table_name The table to be dropped or
+ *                   the table that contains index to be dropped.
+ * @param idx_name   Index to be dropped.
  */
 static void
-sql_clear_stat_spaces(Parse * pParse, const char *zType, const char *zName)
+sql_clear_stat_spaces(Parse *parse, const char *table_name,
+       const char *idx_name)
 {
- sqlite3NestedParse(pParse, "DELETE FROM \"_sql_stat1\" WHERE \"%s\"=%Q",
-    zType, zName);
- sqlite3NestedParse(pParse, "DELETE FROM \"_sql_stat4\" WHERE \"%s\"=%Q",
-    zType, zName);
+ if (idx_name != NULL) {
+ sqlite3NestedParse(parse,
+    "DELETE FROM \"_sql_stat1\" WHERE (\"idx\"=%Q AND "
+    "\"tbl\"=%Q)",
+    idx_name, table_name);
+ sqlite3NestedParse(parse,
+    "DELETE FROM \"_sql_stat4\" WHERE (\"idx\"=%Q AND "
+    "\"tbl\"=%Q)",
+    idx_name, table_name);
+ } else {
+ sqlite3NestedParse(parse,
+    "DELETE FROM \"_sql_stat1\" WHERE \"tbl\"=%Q",
+    table_name);
+ sqlite3NestedParse(parse,
+    "DELETE FROM \"_sql_stat4\" WHERE \"tbl\"=%Q",
+    table_name);
+ }
 }

 /**
@@ -2325,7 +2339,7 @@ sql_drop_table(struct Parse *parse_context, struct
SrcList *table_name_list,
  *    tuple with corresponding space_id from _space.
  */

- sql_clear_stat_spaces(parse_context, "tbl", space_name);
+ sql_clear_stat_spaces(parse_context, space_name, NULL);
  struct Table *tab = sqlite3HashFind(&db->pSchema->tblHash, space_name);
  sqlite3FkDropTable(parse_context, table_name_list, tab);
  sql_code_drop_table(parse_context, space, is_view);
@@ -3328,7 +3342,7 @@ sql_drop_index(struct Parse *parse_context, struct
SrcList *index_name_list,
  * But firstly, delete statistics since schema
  * changes after DDL.
  */
- sql_clear_stat_spaces(parse_context, "idx", index->def->name);
+ sql_clear_stat_spaces(parse_context, table_name, index->def->name);
  int record_reg = ++parse_context->nMem;
  int space_id_reg = ++parse_context->nMem;
  sqlite3VdbeAddOp2(v, OP_Integer, space_id, space_id_reg);


сб, 14 апр. 2018 г. в 11:13, n.pettik <korablev at tarantool.org>:

>
> On 14 Apr 2018, at 07:29, Hollow111 <hollow653 at gmail.com> wrote:
>
> Hello. I'd like to ask about 'one kind of corrections”.
>
>
>
>> Arguments which you carry to the next line, should start right below
>> previous:
>>
>> void f(x int, ….
>>           y char, ….
>>           z double …);
>>
>
> I couldnt find this in  "C style guide" (
> https://tarantool.io/en/doc/2.0/dev_guide/c_style_guide.html)
> Moreover according to this guide:
> "Outside of comments, documentation and except in Kconfig, spaces are
> never used for indentation...".
> Which means we're supposed to violate this rule
>
>
> In fact, they are used. Probably, we should update and clarify this point
> in docs.
> You use tabs as much as possible. To precisely align argument lists, you
> have
> to use spaces:
>
> return_value very_long_function_name_bla_bla_bla(int first_argument,
> int second_argument)
>
> To make ’second_argument’ be under first, you should use 8 tabs + 1 space.
> Overall, you can inspect other source files from box/ to understand how
> source files should be formatted. Also, I advise you to make spaces and
> tabs visible.
> For instance, see how it was done in box/space.c 106 : space_create()
>
> in case first argument is positioned not on the same range
> from left corner of screen as any amount of 8-character tabs.
> Maybe I'm wrong at smth but I'd like to have an explanation.
>
>
>
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