11 lines
468 B
MySQL
11 lines
468 B
MySQL
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-- https://dev.mysql.com/doc/refman/8.0/en/alter-table-generated-columns.html
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ALTER TABLE t1 ADD COLUMN c2 INT GENERATED ALWAYS AS (c1 + 1) STORED;
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ALTER TABLE t1 MODIFY COLUMN c2 TINYINT GENERATED ALWAYS AS (c1 + 5) STORED;
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ALTER TABLE t1 CHANGE c2 c3 INT GENERATED ALWAYS AS (c1 + 1) STORED;
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ALTER TABLE t1 DROP COLUMN c3;
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ALTER TABLE t1 DROP COLUMN c2;
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ALTER TABLE t1 MODIFY COLUMN c2 INT GENERATED ALWAYS AS (c1 + 1) STORED;
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ALTER TABLE t1 MODIFY COLUMN c2 INT;
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