- 假设需要修改数据库中所有datetime类型的字段为date类型
SELECT
cl.table_name,
cl.column_name,
cl.data_type,
CONCAT("ALTER TABLE ", cl.table_name, " MODIFY COLUMN `", cl
SELECT
cl.table_name,
cl.column_name,
cl.data_type,
CONCAT("ALTER TABLE ", cl.table_name, " MODIFY COLUMN `", cl