postgresql change column type
ALTER TABLE assets ALTER COLUMN name TYPE VARCHAR;postgresql change column type
ALTER TABLE assets ALTER COLUMN name TYPE VARCHAR;mysql add column default value
ALTER TABLE table1 ADD COLUMN foo INT DEFAULT 0;alter table delete column
ALTER TABLE "table_name" DROP "column_name";how to add default constraint in mysql
ALTER TABLE "name_table" ALTER "name_column"
SET DEFAULT value_default;mysql add column with default value
-- ALTER TABLE tbl_name ADD COLUMN column_name column_definition
-- [FIRST|AFTER existing_column];
ALTER TABLE office ADD COLUMN phone VARCHAR(200) DEFAULT '000' AFTER name;
ALTER TABLE office ADD COLUMN flag INT(1) FIRST;
ALTER TABLE office ADD COLUMN last_col INT(2); -- Last column is default position
-- ↓ Test it (Fiddle)Copyright © 2021 Codeinu
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