The .NET Framework was good. Really good. Until it wasn't. Why did I leave .NET? In short, it constrained our ability to choose (which is a huge deal for me) and turned our focus inward toward the ...
Left Join / Right Join /inner join相关
关于左连接和右连接总结性的一句话:
左连接where只影向右表,右连接where只影响左表。
Left Join
select * from tbl1 Left Join tbl2 where tbl1.ID = tbl2.ID
左连接后...
oracle使用LEFT JOIN关联产生的问题在查询结果中使用CASE WHEN 无法判断
查询方式一:
SELECT
CASE WHEN (SELECT CAST(SUM(CASE
WHEN (ALLOCABLE_PRIME_CURRENCY_VALUE IS NULL AND STATE_IND = 1) THEN
NVL(...