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MDEV-8358 ALTER TABLE .. ADD PRIMARY KEY IF NOT EXISTS -> ERROR 1068 (42000): Multiple primary key defined

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Checks for multiple primary keys added.
This commit is contained in:
Alexey Botchkov
2015-10-25 22:45:48 +04:00
parent 2c0bcfff8c
commit c9185225cb
3 changed files with 33 additions and 0 deletions
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11
sql/sql_table.cc
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@@ -5846,6 +5846,16 @@ drop_create_field:
{
if (!key->create_if_not_exists)
continue;
/* Check if the table already has a PRIMARY KEY */
if (key->type == Key::PRIMARY &&
table->s->primary_key != MAX_KEY)
{
push_warning_printf(thd, Sql_condition::WARN_LEVEL_NOTE,
ER_DUP_KEYNAME, ER(ER_MULTIPLE_PRI_KEY));
goto remove_key_no_warn;
}
/* If the name of the key is not specified, */
/* let us check the name of the first key part. */
if ((keyname= key->name.str) == NULL)
@@ -5912,6 +5922,7 @@ drop_create_field:
remove_key:
push_warning_printf(thd, Sql_condition::WARN_LEVEL_NOTE,
ER_DUP_KEYNAME, ER(ER_DUP_KEYNAME), keyname);
remove_key_no_warn:
key_it.remove();
if (key->type == Key::FOREIGN_KEY)
{