QUERY: SELECT 'first line'
' - next line'
	' - third line'
	AS "Three lines to one";
Three lines to one                 
-----------------------------------
first line - next line - third line
(1 row)

QUERY: SELECT 'first line'
' - next line' /* this comment is not allowed here */
' - third line';
ERROR:  parser: parse error at or near "'"
QUERY: SELECT text(f1) FROM CHAR_TBL;
ERROR:  function text(bpchar) does not exist
QUERY: SELECT text(f1) FROM VARCHAR_TBL;
ERROR:  function text(varchar) does not exist