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--source include/have_debug.inc
# This test checks the default algorithm used by ALTER TABLE .. ADD/DROP COLUMN.
# It also check the behavior when the algorithm clause is specified
# In a table with 0 rows, the default algorithm is INPLACE.
# In a table with 1 or more rows, the default algorithm is INSTANT.
# The table's TOTAL_ROW_VERSIONS is used to determine if INSTANT is used or
# INPLACE is used
--echo # Scenario 1: Table with 0 rows
--echo # Case 1: Default algorithm
CREATE TABLE t1 (c1 INT);
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
DROP TABLE t1;
CREATE TABLE t1 (c1 INT);
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=DEFAULT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
DROP TABLE t1;
--echo # Case 2: ALGORITHM clause has same value as default
CREATE TABLE t1 (c1 INT);
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=INPLACE;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
DROP TABLE t1;
--echo # Case 3: ALGORITHM clause has different value from default
CREATE TABLE t1 (c1 INT);
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=INSTANT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
DROP TABLE t1;
--echo # Scenario 2: Table with 1 or more rows
--echo # Case 1: Default algorithm
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
DROP TABLE t1;
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=DEFAULT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
DROP TABLE t1;
--echo # Case 2: ALGORITHM clause has same value as default
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=INSTANT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
DROP TABLE t1;
--echo # Case 3: ALGORITHM clause has different value from default
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=INPLACE;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
DROP TABLE t1;
--echo # Scenario 3: Table with 1 delete-marked record
--echo # Case 1: Default algorithm
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
SET GLOBAL innodb_purge_stop_now=1;
DELETE FROM t1 WHERE c1 = 1;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
SET GLOBAL innodb_purge_run_now=1;
DROP TABLE t1;
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
SET GLOBAL innodb_purge_stop_now=1;
DELETE FROM t1 WHERE c1 = 1;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=DEFAULT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
SET GLOBAL innodb_purge_run_now=1;
DROP TABLE t1;
--echo # Case 2: ALGORITHM clause has same value as default
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
SET GLOBAL innodb_purge_stop_now=1;
DELETE FROM t1 WHERE c1 = 1;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=INPLACE;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
SET GLOBAL innodb_purge_run_now=1;
DROP TABLE t1;
--echo # Case 3: ALGORITHM clause has different value from default
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
SET GLOBAL innodb_purge_stop_now=1;
DELETE FROM t1 WHERE c1 = 1;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
ALTER TABLE t1 ADD COLUMN c2 INT, ALGORITHM=INSTANT;
SELECT NAME, TOTAL_ROW_VERSIONS FROM INFORMATION_SCHEMA.INNODB_TABLES WHERE NAME='test/t1';
SET GLOBAL innodb_purge_run_now=1;
DROP TABLE t1;
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