After takin a swig o' Arrakan spice grog, "Relaxin" <[EMAIL PROTECTED]> belched out...: > What is flex/bison ?
Bison is the GNU Project parser generator, in the style of yacc (Yet Another Compiler Compiler). Flex is the GNU Project "fast lexical analyzer generator," in the style of lex. These are used to generate parser code that knows how to recognize (in this case) the SQL language. Obviously, an SQL database must include some way of reading through queries and parsing out whether they are valid, and if they are, what the database is supposed to do with them. Flex and Bison do that part of the work. -- "cbbrowne","@","acm.org" http://cbbrowne.com/info/x.html Rules of the Evil Overlord #212. "I will not send out battalions composed wholly of robots or skeletons against heroes who have qualms about killing living beings. <http://www.eviloverlord.com/> ---------------------------(end of broadcast)--------------------------- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
