复制代码 代码如下:
table a columns(key,value);
table b columns(key,value);
SELECT a.* FROM a LEFT JOIN b
ON a.key = b.key
WHERE b.key IS NULL
原创文章,作者:254126420,如若转载,请注明出处:https://blog.ytso.com/tech/database/233730.html
SELECT a.* FROM a LEFT JOIN b
ON a.key = b.key
WHERE b.key IS NULL
原创文章,作者:254126420,如若转载,请注明出处:https://blog.ytso.com/tech/database/233730.html