diff options
Diffstat (limited to 'sql/sql_lex.cc')
| -rw-r--r-- | sql/sql_lex.cc | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 4081a4e0c3c..2415e0287e5 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -11447,6 +11447,41 @@ bool LEX::add_column_foreign_key(const LEX_CSTRING &field_name, return false; } +bool LEX::init_last_foreign_key(Table_ident *ref_table_name) +{ + if (ref_table_name->db.str == NULL) + ref_table_name->db= query_tables->db; + + Table_ident lookup_ref_name(ref_table_name->db, ref_table_name->table); + if (lower_case_table_names) + lookup_ref_name.lowercase(thd->mem_root); + + if (ref_table_name->db.str == NULL) + copy_db_to(&ref_table_name->db); + TABLE_LIST *ref_table= find_table_in_list(query_tables, + &TABLE_LIST::next_global, + &lookup_ref_name.db, + &lookup_ref_name.table); + + if (ref_table == NULL && + !(thd->variables.option_bits & OPTION_NO_FOREIGN_KEY_CHECKS)) + { + ref_table= (TABLE_LIST *) thd->alloc(sizeof(TABLE_LIST)); + if (unlikely(ref_table == NULL)) + return true; + ref_table->init_one_table_for_prelocking(&lookup_ref_name.db, + &lookup_ref_name.table, + NULL, TL_READ, + TABLE_LIST::PRELOCK_NONE, + 0, 0, + &query_tables_last, + false); + } + last_foreign_key->init(ref_table_name->db, ref_table_name->table, ref_table, + fk_options); + return false; +} + bool LEX::stmt_grant_table(THD *thd, Grant_privilege *grant, |