我只是想了解一下Joins的用法,并找出查询的最佳用法和公式。尝试为主人获取所有宠物-我是否调用带有比较的联接?SELECT *INNER JOIN OWNER ON VISITOR.OWNER_ID = 1或者,我应该调用完整连接并添加WHERE语句吗SELECT *INNER JOIN OWNER ON VISITOR.OWNER_ID = OWNER.ID
WHERE VI
我正在试着理解JOIN() jq的内部结构。来自jq手册():
This builtin joins the values from the given streamAn array of the value in the stream and the corresponding value from the index is fed to the given join你能举几个例子说明它的用法<