字符串截取,长度获取
摘要:
1. 字串的連接:CONCATENATE CONCATENATE t1 t2 t3 t4 t5 t6 t7 t8 INTO result. "直接連接CONCATENATE t1 t2 t3 t4 t5 t6 t7 t8 INTO result SEPARATED BY space. "用空格將每個 阅读全文
posted @ 2020-03-31 15:18 左佐佐 阅读(704) 评论(0) 推荐(0) 编辑