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BUG#21726: Incorrect result with multiple invocations of LAST_INSERT_ID.

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Note: bug#21726 does not directly apply to 4.1, as it doesn't have stored
procedures.  However, 4.1 had some bugs that were fixed in 5.0 by the
patch for bug#21726, and this patch is a backport of those fixes.
Namely, in 4.1 it fixes:

  - LAST_INSERT_ID(expr) didn't return value of expr (4.1 specific).

  - LAST_INSERT_ID() could return the value generated by current
    statement if the call happens after the generation, like in

      CREATE TABLE t1 (i INT AUTO_INCREMENT PRIMARY KEY, j INT);
      INSERT INTO t1 VALUES (NULL, 0), (NULL, LAST_INSERT_ID());

  - Redundant binary log LAST_INSERT_ID_EVENTs could be generated.
This commit is contained in:
kroki/tomash@moonlight.intranet
2006-10-06 13:34:07 +04:00
parent acaa584c55
commit ee0cebf9a7
13 changed files with 189 additions and 38 deletions
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6
sql/sql_parse.cc
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@@ -1977,6 +1977,12 @@ mysql_execute_command(THD *thd)
SELECT_LEX_UNIT *unit= &lex->unit;
DBUG_ENTER("mysql_execute_command");
/*
Remember first generated insert id value of the previous
statement.
*/
thd->current_insert_id= thd->last_insert_id;
/*
Reset warning count for each query that uses tables
A better approach would be to reset this for any commands