[英]How to use to_char function in mysql
delete from student where to_char (Student_id) like '432%';
是to_char
函數在這里是真的使用嗎? 因為我的錯誤顯示是:
FUNCTION to_char不存在
TO_CHAR適用於Oracle,請參見: http : //www.sqlines.com/oracle-to-mysql/to_char_datetime
如果要刪除所有看起來像“ 432”,“ 43234”或“ 432 ...”的學生ID,請使用已發布的通配符。
如果要刪除所有大於或等於432的條目:
delete from student where Student_id >= 432
使用強制轉換或轉換:
delete from student where convert(Student_id,char(50)) like '432%';
delete from student where cast(Student_id as char(50)) like '432%';
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