[GENERAL] Function array_to_string(text[], text) does not exist ???

[Johann Robette]

Hi,   I’m trying to call the array_to_string function like this :             SELECT array_to_string(array[1, 2, 3], '~^~') à it comes directly from the doc. I get this error msg :             ERROR:  parser: parse error at or near "[" at character 24   So I tried this way             SELECT array_to_string('{1, 2, 3}', '~^~') I get this error msg :             ERROR:  Function array_to_string("unknown", "unknown") does not exist       Unable to identify a function that satisfies the given argument types       You may need to add explicit typecasts   So I tried to cast it             SELECT array_to_string(CAST('{1, 2, 3}' AS _int8), CAST('~^~' AS text)) I get this error msg :             ERROR:  Function array_to_string(bigint[], text) does not exist       Unable to identify a function that satisfies the given argument types       You may need to add explicit typecasts   Any help would be greatly appreciated…   Thanks