[TAJO-378] Implement concat_ws function.

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.8.0, 0.9.0
• Fix Version/s: 0.8.0, 0.9.0
• Component/s: Function/UDF
• Assignee: Seungun Choe
• Reporter: Seungun Choe
• Created: 04/Dec/13 05:11
• Updated: 28/Mar/14 08:40
• Resolved: 28/Mar/14 07:02

Description

This function's definition is, concat_ws(sep text, str "any" [, str "any" [, ...] ]).
For example, concat_ws(',', 'abcde', 2, NULL, 22)'s result is abcde,2,22.
Detailed description is "Concatenate all but first arguments with separators. The first parameter is used as a separator. NULL arguments are ignored.".