修改ulong类型别名
内部别名添加类型信息
20140529
u_long运算支持
a
Merge remote-tracking branch 'zl0529-1/master'
support:
SELECT
SUM(L_QUANTITY),SUM(L_EXTENDEDPRICE),SUM(L_EXTENDEDPRICE*(1-L_DISCOUNT)),SUM(L_EXTENDEDPRICE*(1-L_DISCOUNT)*(1+L_TEX)),
count(*) FROM LINEITEM;