Question

在golang代码中使用sql查询获取语法错误。 golang中此SQL查询所需的正确语法：

rows, errQuery := dbCon.Query("SELECT B.LatestDate
    ,A.SVRName AS ServerName
    ,A.DRIVE
,A.TotalSpace_GB AS TotalSpaceGB
,(ISNULL(A.TotalSpace_GB, 0) - ISNULL(A.FreeSpace_GB, 0)) AS 
 UsedSpaceGB
,A.FreeSpace_GB AS FreeSpaceGB
,CASE 
WHEN ((A.FreeSpace_GB / A.TotalSpace_GB) * 100)  between 25 and 
35
THEN 1
WHEN ((A.FreeSpace_GB / A.TotalSpace_GB) * 100) <= 25   THEN 2
ELSE 0
END AS WARNINGSTATUS
    FROM Table_ServerDiskSpaceDetails A WITH (NOLOCK)
    INNER JOIN (
SELECT SVRName
,MAX(Dt) LatestDate
FROM Table_ServerDiskSpaceDetails WITH (NOLOCK)
GROUP BY SVRName
) B ON A.Dt = B.LatestDate
AND A.SVRName = B.SVRName
    ORDER BY WARNINGSTATUS DESC
,ServerName
,A.Drive")

Answer 1

您的SQL语句有多行，但您没有使用正确的多行语法。正确的语法是：

someLongString := "Line 1 " +    // Don't forget the trailing space
                  "Second line." // This is on the next line.

目前，您只是想在不同行上的一组引号之间填充所有内容。

编辑：Per @Kaedys在下面说，以下内容也有效，可能性能更高。

someLongString := `Line 1
                   Second line.`

Answer 2

将第一个和最后一个“\”“更改为”“，或引用查询字符串的每一行，然后在每行之间添加”+“，如

"select" +
" *" +
" from" +
" table"

Golang SQL查询语法

2 个答案: