摘要: SELECT SUBSTR('1223_1',0,INSTR('1223_1','_', 1, 1)-1) "INSTRING", INSTR('1223_1','_', 1, 1) FROM DUAL 阅读全文
posted @ 2019-12-23 13:33 冬天不眠 阅读(772) 评论(0) 推荐(0) 编辑