SELECT RTrim(a),a FROM (SELECT 'yinkai ' a )tb Trim函数 MySQL除了支持RTrim()(正如刚才所见,它去掉串右边的空格),还支持LTrim()(去掉串左边的空格)以及Trim() 随机字符串 CREATEDEFINER=`root`@`localhost`FUNCTION`rand_string`(n int)RETURNSvarchar(255)CHARSETutf8mb4COLLATEutf8mb4_unicode_ci begi...