随笔档案「2021年4月」 - ..SunXin

04 2021 档案

摘要：SELECT a1, a2 FROM (SELECT a1, SUBSTR ( a2, INSTR (',' || a2 || ',', ',', 1, t2.row_num), INSTR (',' || a2 || ',', ',', 1, t2.row_num + 1) - 1 - INSTR 阅读全文

posted @ 2021-04-19 16:22 ..SunXin 阅读(47) 评论(0) 推荐(0)