使用WHERE子句更新语句

Question

我想更新表sheet并将hproject的列值设置为＆＃39;是＆＃39;其中customer hproject =＆＃39;是＆＃39;

UPDATE `sheet` SET `hproject` =  'yes' WHERE (
SELECT `customer`
FROM `sheet`
WHERE `hproject` =  'yes'
)

以上查询无效，我将不胜感激任何帮助或指导。

此致

Answer 1

试试：

  UPDATE `sheet` SET `hproject` =  'yes' WHERE `customer` in (
  select * from(
  SELECT `customer`
  FROM `sheet`
  WHERE `hproject` =  'yes'
 )t
 )