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ec9908b257
- ALTER_ALGORITHM should be substituted when there is no mention of algorithm in alter statement. - Introduced algorithm(thd) in Alter_info. It returns the user requested algorithm. If user doesn't specify algorithm explicitly then it returns alter_algorithm variable. - changed algorithm() to get_algorithm(thd) to return algorithm name for displaying the error. - set_requested_algorithm(algo_value) to avoid direct assignment on requested_algorithm variable. - Avoid direct access of requested_algorithm to encapsulate requested_algorithm variable
124 lines
3.9 KiB
Text
124 lines
3.9 KiB
Text
CREATE TABLE t1(f1 INT NOT NULL,
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f2 INT NOT NULL,
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f3 INT NULL,
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f4 INT as (f2) STORED,
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f5 INT as (f3) STORED,
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PRIMARY KEY(f1))ROW_FORMAT=COMPRESSED, ENGINE=INNODB;
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INSERT INTO t1(f1, f2, f3) VALUES(1, 1, 1);
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SELECT @@alter_algorithm;
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@@alter_algorithm
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COPY
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# All the following cases needs table rebuild
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# Add and Drop primary key
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ALTER TABLE t1 ADD COLUMN col1 INT NOT NULL,DROP PRIMARY KEY,ADD PRIMARY KEY(col1);
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Make existing column NULLABLE
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ALTER TABLE t1 MODIFY f2 INT;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Drop Stored Column
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ALTER TABLE t1 DROP COLUMN f5;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Add base non-generated column as a last column in the compressed table
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ALTER TABLE t1 ADD COLUMN f6 INT NOT NULL;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Add base non-generated column but not in the last position
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ALTER TABLE t1 ADD COLUMN f7 INT NOT NULL after f3;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Force the table to rebuild
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ALTER TABLE t1 FORCE;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Row format changes
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ALTER TABLE t1 ROW_FORMAT=COMPRESSED;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Engine table
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ALTER TABLE t1 ENGINE=INNODB;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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ALTER TABLE t1 FORCE, ALGORITHM=DEFAULT;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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DROP TABLE t1;
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affected rows: 0
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CREATE TABLE t1(f1 INT PRIMARY KEY, f2 INT NOT NULL,
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f3 INT AS (f2 * f2) VIRTUAL,
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f4 INT NOT NULL UNIQUE,
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f5 INT NOT NULL,
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INDEX idx(f2))ENGINE=INNODB;
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CREATE TABLE t2(f1 INT NOT NULL, f2 INT NOT NULL,
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INDEX(f1),
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FOREIGN KEY fidx(f1) REFERENCES t1(f1))ENGINE=INNODB;
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INSERT INTO t1(f1, f2, f4, f5) VALUES(1, 2, 3, 4);
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ALTER TABLE t1 ADD INDEX idx1(f4), page_compressed=1;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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ALTER TABLE t1 DROP INDEX idx, page_compression_level=5;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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ALTER TABLE t1 ADD UNIQUE INDEX u1(f2);
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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ALTER TABLE t1 DROP INDEX f4, page_compression_level=9;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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SET foreign_key_checks = 0;
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affected rows: 0
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ALTER TABLE t1 ADD FOREIGN KEY(f5) REFERENCES t2(f1);
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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DROP TABLE t2, t1;
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affected rows: 0
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CREATE TABLE t1(f1 INT NOT NULL,
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f2 INT NOT NULL,
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f3 INT AS (f2 * f2) VIRTUAL,
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INDEX idx (f2))engine=innodb;
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CREATE TABLE t2(f1 INT NOT NULL, f2 INT NOT NULL,
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f3 VARCHAR(10),
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INDEX(f1))ENGINE=INNODB;
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INSERT INTO t1(f1, f2) VALUES(1, 1);
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# Add column at the end of the table
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ALTER TABLE t1 ADD COLUMN f4 char(100) default 'BIG WALL';
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Change virtual column expression
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ALTER TABLE t1 CHANGE f3 f3 INT AS (f2 * f2) VIRTUAL;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Add virtual column
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ALTER TABLE t1 ADD COLUMN f5 INT AS (f2) VIRTUAL;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Rename Column
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ALTER TABLE t1 CHANGE f3 vcol INT AS (f2) VIRTUAL;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Rename table
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ALTER TABLE t1 RENAME t3;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Drop Virtual Column
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ALTER TABLE t3 DROP COLUMN vcol;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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# Column length varies
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ALTER TABLE t2 CHANGE f3 f3 VARCHAR(20);
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affected rows: 0
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info: Records: 0 Duplicates: 0 Warnings: 0
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SET foreign_key_checks = 0;
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affected rows: 0
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ALTER TABLE t3 ADD FOREIGN KEY fidx(f2) REFERENCES t2(f1);
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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SET foreign_key_checks = 1;
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affected rows: 0
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ALTER TABLE t3 DROP FOREIGN KEY fidx;
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affected rows: 1
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info: Records: 1 Duplicates: 0 Warnings: 0
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DROP TABLE t3, t2;
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affected rows: 0
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