I'm having difficulty with Lemon's operator precedence. Given SQLite's operator precedence table where it's presumably interpreted with lowest precedence tokens at the top to the highest precedence tokens at the bottom:
%left OR. %left AND. %right NOT. %left IS MATCH LIKE_KW BETWEEN IN ISNULL NOTNULL NE EQ. %left GT LE LT GE. %right ESCAPE. %left BITAND BITOR LSHIFT RSHIFT. %left PLUS MINUS. %left STAR SLASH REM. %left CONCAT. %left COLLATE. %right UMINUS UPLUS BITNOT. Why doesn't the BITNOT operator '~' have the highest precedence? SQLite version 3.5.2 Enter ".help" for instructions sqlite> select ~1 - ~5; -8 sqlite> select (~1) - (~5); 4 Is precedence not determined by the order of the %left/%right lines in parse.y? If not, how might one assign BITNOT the highest precedence? MySQL, by comparison: mysql> select ~1 - ~5; +---------+ | ~1 - ~5 | +---------+ | 4 | +---------+ mysql> select (~1) - (~5); +-------------+ | (~1) - (~5) | +-------------+ | 4 | +-------------+ MySQL operator precedence: http://dev.mysql.com/doc/refman/5.0/en/operator-precedence.html MS SQL Server precedence: http://msdn2.microsoft.com/en-us/library/ms190276.aspx ____________________________________________________________________________________ Be a better sports nut! Let your teams follow you with Yahoo Mobile. Try it now. http://mobile.yahoo.com/sports;_ylt=At9_qDKvtAbMuh1G1SQtBI7ntAcJ ----------------------------------------------------------------------------- To unsubscribe, send email to [EMAIL PROTECTED] -----------------------------------------------------------------------------
