doris/docs/documentation/cn/sql-reference/sql-functions/string-functions/concat_ws.md

concat_ws

Description

使用第一个参数作为连接符，将第二个参数以及后续所有参数拼接成一个字符串. 如果分隔符是NULL，返回NULL。 concat_ws函数不会跳过空字符串，会跳过NULL值

Syntax

VARCHAR concat_ws(VARCHAR, VARCHAR,...)

Examples

mysql> select concat_ws("or", "d", "is");
+----------------------------+
| concat_ws('or', 'd', 'is') |
+----------------------------+
| doris                      |
+----------------------------+

mysql> select concat_ws(NULL, "d", "is");
+----------------------------+
| concat_ws(NULL, 'd', 'is') |
+----------------------------+
| NULL                       |
+----------------------------+

mysql> select concat_ws("or", "d", NULL,"is");
+---------------------------------+
| concat_ws("or", "d", NULL,"is") |
+---------------------------------+
| doris                           |
+---------------------------------+