这个 INSERT MAX+1 查询有什么问题?
What is wrong with this INSERT MAX+1 query?
我在查询时遇到问题:
INSERT INTO invoices(invuid, linenumber) VALUES (?, SELECT(SELECT max(linenumber)+1 FROM invoices WHERE invuid=?))
它一直在说:"General error: 1093 You can't specify target table 'invoices' for update"
您的语法无效,请使用 INSERT INTO ... SELECT
并删除 values
部分,如下所示:
INSERT INTO invoices(invuid, linenumber)
SELECT ?, max(linenumber)+1 FROM invoices WHERE invuid=?
我在查询时遇到问题:
INSERT INTO invoices(invuid, linenumber) VALUES (?, SELECT(SELECT max(linenumber)+1 FROM invoices WHERE invuid=?))
它一直在说:"General error: 1093 You can't specify target table 'invoices' for update"
您的语法无效,请使用 INSERT INTO ... SELECT
并删除 values
部分,如下所示:
INSERT INTO invoices(invuid, linenumber)
SELECT ?, max(linenumber)+1 FROM invoices WHERE invuid=?