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ac24289e66
The table option page_compression_level is something that only affects future writes, not actually the data format. Therefore, we can allow instant changes of this option. Similarly, the table option page_compressed can be set on a previously uncompressed table without rebuilding the table, because an uncompressed page would be considered valid when reading a page_compressed table. Removing the page_compressed option will continue to require the table to be rebuilt. ha_innobase_inplace_ctx::page_compression_level: The requested page_compression_level at the start of ALTER TABLE, or 0 if page_compressed=OFF. alter_options_need_rebuild(): Renamed from create_option_need_rebuild(). Allow page_compression_level and page_compressed to be changed as above, without rebuilding the table. ha_innobase::check_if_supported_inplace_alter(): Allow ALGORITHM=INSTANT for ALTER_OPTIONS if the table is not to be rebuilt. If rebuild is needed, set ha_alter_info->unsupported_reason. innobase_page_compression_try(): Update SYS_TABLES.TYPE according to the table flags, for an instant change of page_compression_level or page_compressed. commit_cache_norebuild(): Adjust dict_table_t::flags, fil_space_t::flags and (if needed) FSP_SPACE_FLAGS if page_compression_level was specified.
81 lines
2.5 KiB
Plaintext
81 lines
2.5 KiB
Plaintext
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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# Make existing column NON-NULLABLE
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ALTER TABLE t1 MODIFY f3 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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# 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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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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SELECT @@alter_algorithm;
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@@alter_algorithm
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COPY
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ALTER TABLE t1 ADD INDEX idx1(f4);
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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;
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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;
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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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