标签:list 内连接 out inner height width 右外连接 nio mys
SELECT <select_list> FROM TableA A INNER JOIN TableB B ON A.Key = B.Key
SELECT <select_list> FROM TableA A LEFT JOIN TableB B ON A.Key = B.Key
SELECT <select_list> FROM TableA A LEFT JOIN TableB B ON A.Key = B.Key WHERE B.Key IS NULL
SELECT <select_list> FROM TableA A RIGHT JOIN TableB B ON A.Key = B.Key
SELECT <select_list> FROM TableA A RIGHT JOIN TableB B ON A.Key = B.Key WHERE A.Key IS NULL
mysql不支持,需要用union
SELECT <select_list> FROM TableA A FULL OUTER JOIN TableB B ON A.Key = B.Key
SELECT <select_list> FROM TableA A FULL OUTER JOIN TableB B ON A.Key = B.Key WHERE A.Key IS NULL OR B.Key IS NULL
标签:list 内连接 out inner height width 右外连接 nio mys
原文地址:https://www.cnblogs.com/zhaye/p/10776931.html