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Simplified code, no functional changes

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This commit is contained in:
Sergey Vojtovich 2018-12-21 14:39:46 +04:00
parent 4007eaba91
commit 7ad742b265
1 changed files with 11 additions and 41 deletions
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52
sql/sql_table.cc
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@ -9586,7 +9586,7 @@ bool mysql_alter_table(THD *thd, const LEX_CSTRING *new_db,
key_info, key_count,
IF_PARTITIONING(thd->work_part_info, NULL),
ignore);
TABLE *altered_table= NULL;
TABLE *altered_table;
bool use_inplace= true;
/* Fill the Alter_inplace_info structure. */
@ -9754,52 +9754,22 @@ bool mysql_alter_table(THD *thd, const LEX_CSTRING *new_db,
/* Mark that we have created table in storage engine. */
no_ha_table= false;
if (create_info->tmp_table())
/* Open the table since we need to copy the data. */
new_table= thd->create_and_open_tmp_table(new_db_type, &frm,
alter_ctx.get_tmp_path(),
alter_ctx.new_db.str,
alter_ctx.tmp_name.str,
true, true);
if (!new_table)
goto err_new_table_cleanup;
if (table->s->tmp_table != NO_TMP_TABLE)
{
TABLE *tmp_table=
thd->create_and_open_tmp_table(new_db_type, &frm,
alter_ctx.get_tmp_path(),
alter_ctx.new_db.str,
alter_ctx.tmp_name.str,
true, true);
if (!tmp_table)
{
goto err_new_table_cleanup;
}
/* in case of alter temp table send the tracker in OK packet */
SESSION_TRACKER_CHANGED(thd, SESSION_STATE_CHANGE_TRACKER, NULL);
}
/* Open the table since we need to copy the data. */
if (table->s->tmp_table != NO_TMP_TABLE)
{
TABLE_LIST tbl;
tbl.init_one_table(&alter_ctx.new_db, &alter_ctx.tmp_name, 0, TL_READ_NO_INSERT);
/*
Table can be found in the list of open tables in THD::all_temp_tables
list.
*/
if ((tbl.table= thd->find_temporary_table(&tbl)) == NULL)
goto err_new_table_cleanup;
new_table= tbl.table;
DBUG_ASSERT(new_table);
}
else
{
/*
table is a normal table: Create temporary table in same directory.
Open our intermediate table.
*/
new_table=
thd->create_and_open_tmp_table(new_db_type, &frm,
alter_ctx.get_tmp_path(),
alter_ctx.new_db.str,
alter_ctx.tmp_name.str,
true, true);
if (!new_table)
goto err_new_table_cleanup;
/*
Normally, an attempt to modify an FK parent table will cause
FK children to be prelocked, so the table-being-altered cannot