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#
# ENABLE KEYS / DISABLE KEYS
#
--source have_engine.inc
--source have_default_index.inc
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
--let $create_definition = a $int_indexed_col, $default_index(a)
--source create_table.inc
INSERT INTO t1 (a) VALUES (10);
INSERT INTO t1 (a) VALUES
(1),(2),(3),(4),(5),(6),(7),(8),(9),
(21),(22),(23),(24),(25),(26),(27),(28),(29);
# Plan should use the index.
# Masking the `rows` column as the value might vary a bit
--replace_column 9 #
EXPLAIN SELECT a FROM t1 ORDER BY a;
--replace_column 6 # 7 #
SHOW INDEX IN t1;
--let $alter_definition = DISABLE KEYS
--source alter_table.inc
if ($mysql_errname)
{
--let $my_last_stmt = $alter_statement
--let $functionality = ALTER .. DISABLE KEYS
--source unexpected_result.inc
}
# Now comment should say 'disabled'
--replace_column 6 # 7 #
SHOW INDEX IN t1;
# And the plan should not use the index
EXPLAIN SELECT a FROM t1 ORDER BY a;
INSERT INTO t1 (a) VALUES
(11),(12),(13),(14),(15),(16),(17),(18),(19),(20);
# The index should be back active
--let $alter_definition = ENABLE KEYS
--source alter_table.inc
--replace_column 6 # 7 #
SHOW INDEX IN t1;
--replace_column 9 #
EXPLAIN SELECT a FROM t1 ORDER BY a;
DROP TABLE t1;
--let $create_definition = a $int_indexed_col, UNIQUE INDEX(a)
--source create_table.inc
if ($mysql_errname)
{
--let $my_last_stmt = $create_statement
--let $functionality = Unique keys
--source unexpected_result.inc
}
if (!$mysql_errname)
{
INSERT INTO t1 (a) VALUES
(1),(2),(3),(4),(5),(6),(7),(8),(9),
(21),(22),(23),(24),(25),(26),(27),(28),(29);
# For unique indexes DISABLE KEYS has no effect
--let $alter_definition = DISABLE KEYS
--source alter_table.inc
--let $error_codes = ER_DUP_ENTRY,ER_DUP_KEY
INSERT INTO t1 (a) VALUES (29);
--source check_errors.inc
--replace_column 6 # 7 #
SHOW INDEX IN t1;
--replace_column 9 #
EXPLAIN SELECT a FROM t1 ORDER BY a;
DROP TABLE t1;
}
# Cleanup
--source cleanup_engine.inc