Converts each array element to its text representation, and concatenates those separated by the delimiter string.
Signatures & examples
array_to_string ( array anyarray, delimiter text [, null_string text ] ) → text
Converts each array element to its text representation, and concatenates those separated by the delimiter string. If null_string is given and is not NULL, then NULL array entries are represented by that string; otherwise, they are omitted. See also string_to_array.