Please how can I update different columns base on different and specific conditions. For example:
UPDATE table
SET col1 = val1 WHERE col1 > 2
SET col2 = val2 WHERE col2 > 1
Is is possible to write an SQL UPDATE statement like this Where different columns will be updated base on separate conditions?
Use case
:
UPDATE table
SET col1 = (CASE WHEN col1 > 2 THEN val1 ELSE col1 END),
col2 = (CASE WHEN col2 > 1 THEN val2 ELSE col2 END);
You can also add WHERE col1 > 2 or col2 > 1
so MySQL does not attempt to update all rows.
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