我试图让所有的“balcao”与最大。 “nCli”的值与mysql具有和聚合功能
SELECT cli.idBalcao, count(*) AS nCLientes
FROM cliente AS cli
GROUP BY cli.idBalcao
HAVING nClientes=MAX(nClientes)
任何人都知道为什么这样不起作用? 我使用用户定义的变量解决了这个问题,但是这个代码应该在MySQL上工作。
我试图让所有的“balcao”与最大。 “nCli”的值与mysql具有和聚合功能
SELECT cli.idBalcao, count(*) AS nCLientes
FROM cliente AS cli
GROUP BY cli.idBalcao
HAVING nClientes=MAX(nClientes)
任何人都知道为什么这样不起作用? 我使用用户定义的变量解决了这个问题,但是这个代码应该在MySQL上工作。
如果你改变,要
SELECT cli.idBalcao, count(*) AS nCLientes,
MAX(nCli) as maxClientes
FROM cliente AS cli
GROUP BY cli.idBalcao
HAVING nClientes = maxClientes
(OR)
SELECT cli.idBalcao, count(*) AS nCLientes
FROM cliente AS cli
GROUP BY cli.idBalcao
HAVING nClientes IN (select MAX(nCli) from cliente)
见http://meta.stackoverflow.com/questions/333952/why-should-i-provide-an -mcve-for-what-seem-to-the-very-simple-sql-query – Strawberry