tst4003.mal

来自「一个内存数据库的源代码这是服务器端还有客户端」· MAL 代码 · 共 10 行

# The 4000 series deals with strategic optimizer constructs
# common subexpression evaluation
optimizer.setDebug();
optimizer.commonTerms();
b:= bat.new(:str,:str);
c:= bat.new(:str,:str);       # identical until insert takes place
d:= algebra.select(b,"hello","world");
e:= algebra.select(b,"hello","world");    # mapped onto one instruction