sunjincheng created FLINK-6925: ---------------------------------- Summary: Add CONCAT/CONCAT_WS supported in SQL Key: FLINK-6925 URL: https://issues.apache.org/jira/browse/FLINK-6925 Project: Flink Issue Type: Sub-task Components: Table API & SQL Affects Versions: 1.4.0 Reporter: sunjincheng
CONCAT(str1,str2,...)Returns the string that results from concatenating the arguments. May have one or more arguments. If all arguments are nonbinary strings, the result is a nonbinary string. If the arguments include any binary strings, the result is a binary string. A numeric argument is converted to its equivalent nonbinary string form. CONCAT() returns NULL if any argument is NULL. * Syntax: CONCAT(str1,str2,...) * Arguments ** str1,str2,... - * Return Types string * Example: CONCAT('F', 'lin', 'k') -> 'Flink' CONCAT('M', NULL, 'L') -> NULL CONCAT(14.3) -> '14.3' * See more: ** [MySQL| https://dev.mysql.com/doc/refman/5.7/en/string-functions.html#function_concat] CONCAT_WS() stands for Concatenate With Separator and is a special form of CONCAT(). The first argument is the separator for the rest of the arguments. The separator is added between the strings to be concatenated. The separator can be a string, as can the rest of the arguments. If the separator is NULL, the result is NULL. * Syntax: CONCAT_WS(separator,str1,str2,...) * Arguments ** separator - ** str1,str2,... - * Return Types string * Example: CONCAT_WS(',','First name','Second name','Last Name') -> 'First name,Second name,Last Name' * See more: ** [MySQL| https://dev.mysql.com/doc/refman/5.7/en/string-functions.html#function_concat-ws] -- This message was sent by Atlassian JIRA (v6.4.14#64029)