This is an aggregate function that joins strings.
Parameters:
- Values to join into a string. If it is an array, array items are joined into a string. If it is a value table, all columns and rows are joined into a string.
- Element separator. A string that contains the text to be used as a separator between array elements and value table rows. The default value is the line feed character.
- Column separators. A string that contains the text to be used as a separator between value table columns. The default value is semicolon (;).