# 
# 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