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WL#5370 Keep forward-compatibility when changing

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'CREATE TABLE IF NOT EXISTS ... SELECT' behaviour
BUG#55474, BUG#55499, BUG#55598, BUG#55616 and BUG#55777 are fixed
in this patch too.

This is the 5.1 part.
It implements:
- if the table exists, binlog two events: CREATE TABLE IF NOT EXISTS
  and INSERT ... SELECT

- Insert nothing and binlog nothing on master if the existing object
  is a view. It only generates a warning that table already exists.


mysql-test/r/trigger.result:
  Ather this patch, 'CREATE TABLE IF NOT EXISTS ... SELECT' will not
  insert anything if the creating table already exists and is a view.
sql/sql_class.h:
  Declare virtual function write_to_binlog() for select_insert.
  It's used to binlog 'create select'
sql/sql_insert.cc:
  Implement write_to_binlog();
  Use write_to_binlog() instead of binlog_query() to binlog the statement.
  if the table exists, binlog two events: CREATE TABLE IF NOT EXISTS
  and INSERT ... SELECT
sql/sql_lex.h:
  Declare create_select_start_with_brace and create_select_pos.
  They are helpful for binlogging 'create select'
sql/sql_parse.cc:
  Do nothing on master if the existing object is a view.
sql/sql_yacc.yy:
  Record the relative postion of 'SELECT' in the 'CREATE ...SELECT' statement.
  Record whether there is a '(' before the 'SELECT' clause.
This commit is contained in:
unknown
2010-08-18 12:56:06 +08:00
parent 790852c0c9
commit 9d6811502e
15 changed files with 1191 additions and 27 deletions
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19
sql/sql_parse.cc
View File

@@ -2717,6 +2717,25 @@ mysql_execute_command(THD *thd)
{
TABLE_LIST *duplicate;
create_table= lex->unlink_first_table(&link_to_local);
if (create_table->view)
{
if (create_info.options & HA_LEX_CREATE_IF_NOT_EXISTS)
{
push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
ER_TABLE_EXISTS_ERROR,
ER(ER_TABLE_EXISTS_ERROR),
create_info.alias);
my_ok(thd);
}
else
{
my_error(ER_TABLE_EXISTS_ERROR, MYF(0), create_info.alias);
res= 1;
}
goto end_with_restore_list;
}
if ((duplicate= unique_table(thd, create_table, select_tables, 0)))
{
update_non_unique_table_error(create_table, "CREATE", duplicate);