Question

我使用php pdo和SQL Server Native Client 11.0作为驱动程序。很明显我不能使用LIMIT子句，因为它是专有的，并且在尝试选择行的范围时我一直在遇到问题。

我的设置如下：

$statement = "SELECT ROW_NUMBER() OVER (ORDER BY USERS.name DESC) AS RowNum,  CASE.no, CASE.type, CASE.date,    CASE.ju, USERS.name, TBRLMF.rd_rl_description FROM dbo.CASE INNER JOIN dbo.USERS ON dbo.CASE.no = dbo.USERS.case_no INNER JOIN dbo.CMSTBRLMF ON dbo.USERS.relationship = dbo.TBRLMF.code ";

if($exact == 'checked'){
$exact = '=';
}else{
$exact = 'LIKE';
}
if($searchtype == 'users'){
$statement .= " WHERE USERS.name $exact '%$searchstring%'";
}else{
$statement .= " WHERE USERS.no $exac '%$searchstring%'";
}
$statement .= " AND RowNum BETWEEN :offset AND :max";

$statement  = $dbh->prepare($statement);
$statement->bindParam(':offset', $offset, PDO::PARAM_INT);
$statement->bindParam(':max', $max, PDO::PARAM_INT);

并且只要我不包含代码行：

$statement .= " AND RowNum BETWEEN :offset AND :max";

它工作正常但给我所有数据。

当包含该行时，我收到以下错误： -

捕获异常＆＃39; PDOException＆＃39; with message＆＃39; SQLSTATE [42S22]：找不到列：207 [Microsoft] [SQL Server Native Client 11.0] [SQL Server]列名称无效＆＃39; RowNum＆＃39;。（SQLExecute [207]在ext \ pdo_odbc \ odbc_stmt.c：254）＆＃39;在C：\ pub \ test \ Classes \ Core.php：44

我很茫然，MSSQL对我来说是新手。

非常感谢。

Answer 1

该列的谓词不能在WHERE子句中。（访问行时，将评估WHERE子句中的谓词;在访问行之前，该表达式（分析函数）的值才可用。

您可以在HAVING子句中引用列别名：

" HAVING RowNum BETWEEN ... ";

Answer 2

您不能在WHERE子句中使用COLUMN ALIAS（在您的情况下为RowNum）。而是使用派生表更改您的查询，如下所示

SELECT * FROM
(
SELECT ROW_NUMBER() OVER (ORDER BY USERS.name DESC) AS RowNum,  
CASE.no, 
CASE.type, 
CASE.date,    
CASE.ju, 
USERS.name, 
TBRLMF.rd_rl_description 
FROM dbo.CASE 
INNER JOIN dbo.USERS 
ON dbo.CASE.no = dbo.USERS.case_no 
INNER JOIN dbo.CMSTBRLMF 
ON dbo.USERS.relationship = dbo.TBRLMF.code 
WHERE USERS.name LIKE '%string%'
AND USERS.no LIKE '%string%'
) X 
WHERE RowNum BETWEEN 1 AND 10;

修改

您也可以使用CTE（公用表格表达式）来解决此问题，如下所示

创建CTE

WITH NEWCTE AS ( SELECT ROW_NUMBER() OVER (ORDER BY USERS.name DESC) AS RowNum, CASE.no, CASE.type, CASE.date, CASE.ju, USERS.name, TBRLMF.rd_rl_description FROM dbo.CASE INNER JOIN dbo.USERS ON dbo.CASE.no = dbo.USERS.case_no INNER JOIN dbo.CMSTBRLMF ON dbo.USERS.relationship = dbo.TBRLMF.code WHERE USERS.name LIKE '%searchstring%' AND USERS.no LIKE '%searchstring%' )

查询CTE

SELECT * FROM NEWCTE WHERE RowNum BETWEEN 1 AND 10

PHP PDO MSSQL ROW_NUMBER（）错误

2 个答案: