--source include/have_rocksdb.inc

##
## test dropping index inplace
##

CREATE TABLE t1 (a INT, b INT AUTO_INCREMENT, KEY ka(a), KEY kb(a,b), PRIMARY KEY(b)) ENGINE=ROCKSDB;
SHOW CREATE TABLE t1;
INSERT INTO t1 (a) VALUES (1);
INSERT INTO t1 (a) VALUES (3);
INSERT INTO t1 (a) VALUES (5);

ALTER TABLE t1 DROP INDEX ka, ALGORITHM=INPLACE;
SHOW CREATE TABLE t1;

# Key ka does not exist in table t1
--error ER_KEY_DOES_NOT_EXITS
SELECT * FROM t1 FORCE INDEX(ka) where a > 1;

--sorted_result
SELECT * FROM t1 FORCE INDEX(kb) where a > 1;
--sorted_result
SELECT * FROM t1 where b > 1;

DROP TABLE t1;

##
## test dropping multiple indexes at once and multi-part indexes
##

CREATE TABLE t1 (a INT AUTO_INCREMENT, b INT, c INT, KEY kb(b), KEY kbc(b,c), KEY kc(c), PRIMARY KEY(a)) ENGINE=ROCKSDB;
SHOW CREATE TABLE t1;
INSERT INTO t1 (b,c) VALUES (1,2);
INSERT INTO t1 (b,c) VALUES (3,4);
INSERT INTO t1 (b,c) VALUES (5,6);
ALTER TABLE t1 DROP INDEX kb, DROP INDEX kbc, ALGORITHM=INPLACE;
SHOW CREATE TABLE t1;


# test restarting to make sure everything is still ok and persisted properly
--source include/restart_mysqld.inc

SHOW CREATE TABLE t1;

INSERT INTO t1 (b,c) VALUES (1,2);
INSERT INTO t1 (b,c) VALUES (3,4);
INSERT INTO t1 (b,c) VALUES (5,6);

--sorted_result
SELECT * FROM t1 FORCE INDEX(kc) where c > 3;
--sorted_result
SELECT * FROM t1 where b > 3;

DROP TABLE t1;

# test dropping pk to see if thats still ok
CREATE TABLE t1 (a INT, b INT, c INT, KEY kb(b), KEY kbc(b,c), KEY kc(c), PRIMARY KEY(a)) ENGINE=ROCKSDB;
SHOW INDEX IN t1;
ALTER TABLE t1 DROP INDEX kb, DROP INDEX kbc, ALGORITHM=INPLACE;
SHOW INDEX IN t1;

ALTER TABLE t1 DROP PRIMARY KEY;
SHOW INDEX IN t1;
# test dropping index on tables with no pk
ALTER TABLE t1 DROP INDEX kc, ALGORITHM=INPLACE;
SHOW INDEX IN t1;

DROP TABLE t1;

# test dropping unique keys
CREATE TABLE t1 (a INT AUTO_INCREMENT, b INT, c INT, PRIMARY KEY(a)) ENGINE=ROCKSDB;
ALTER TABLE t1 ADD UNIQUE INDEX kb(b);
ALTER TABLE t1 ADD UNIQUE INDEX kbc(b,c);
ALTER TABLE t1 ADD UNIQUE INDEX kc(c);
SHOW INDEX IN t1;

ALTER TABLE t1 DROP INDEX kb, DROP INDEX kbc;
SHOW INDEX IN t1;

# test restarting to make sure everything is still ok and persisted properly
--source include/restart_mysqld.inc

--sorted_result
INSERT INTO t1 (b,c) VALUES (1,2);
INSERT INTO t1 (b,c) VALUES (3,4);
INSERT INTO t1 (b,c) VALUES (5,6);
SELECT * FROM t1 FORCE INDEX(kc) where c > 3;

# test dropping index on tables with no pk
ALTER TABLE t1 DROP INDEX kc, ALGORITHM=INPLACE;
SHOW CREATE TABLE t1;

DROP TABLE t1;

# case where dropping column, where column is the key, we dont want to use
# inplace in this scenario
CREATE TABLE t1 (col1 INT, col2 INT, col3 INT) ENGINE=ROCKSDB;
INSERT INTO t1 (col1,col2,col3) VALUES (1,2,3);
ALTER TABLE t1 ADD KEY idx ( col1, col2 );
ANALYZE TABLE t1;
ALTER TABLE t1 DROP COLUMN col2;
ALTER TABLE t1 DROP COLUMN col3;
DROP TABLE t1;

# case drop and add at same time, should not use inplace algorithm yet
CREATE TABLE t1 (col1 INT, col2 INT, col3 INT) ENGINE=ROCKSDB;
INSERT INTO t1 (col1,col2,col3) VALUES (1,2,3);
ALTER TABLE t1 ADD KEY idx ( col1, col2 );
ANALYZE TABLE t1;
ALTER TABLE t1 DROP COLUMN col2;
ALTER TABLE t1 DROP COLUMN col3;
DROP TABLE t1;