SQL多选行

Question

Name | Status      | value
-----+-------------+-------
wec1 | rotortemp   | Null
wec1 | baldetemp   | Null
wec1 | Cabinettemp | 1
wec2 | rotortemp   | Null
wec2 | baldetemp   | Null
wec2 | Cabinettemp | Null

如何选择所有wec1，因为wec1的一行值= 1

Answer 1

试试这个：

SELECT *
FROM TableName
WHERE Name IN (SELECT Name
               FROM TableName
               WHERE value=1)

Answer 2

不确定你的意思，但也许是这样的：

SELECT      Name,
            Status,
            value

FROM        yourtable

WHERE       Name IN (
    SELECT      Name
    FROM        yourtable
    WHERE       value = 1
)