[摘要] 0.先來個例子：CREATE OR REPLACE SYNONYM IMWSAPP.TB_IWR_MPS_PROCESS_LOG_X FOR IMWS.TB_IWR_MPS_PROCESS_LOG_X;synonyms是對可以跨schema的表的代理，主要做對表，權限的管理。跟view視圖類，但是v...[全文]
[摘要] Given a Weather table, write a SQL query to find all dates' Ids with higher temperature compared to its previous (yesterday's) dates. +---------+--[全文]
