Question

我需要在MSSQL server 2008中将LIMIT和OFFSET应用于原始查询（不进行修改）。

假设原始查询是：

SELECT * FROM energy_usage

（但它可以是任意的SELECT查询）

这就是我到目前为止所提出的：

1。它可以满足我的需求，但查询会生成额外列 row_number ，这是我不需要的。

WITH OrderedTable AS
(
 SELECT ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS row_number,  * FROM energy_usage
)   
SELECT * FROM OrderedTable WHERE row_number BETWEEN 1 AND 10

2。这个因某些原因无效并返回以下错误。

SELECT real_sql.* FROM (
SELECT ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS row_number, * FROM (SELECT * FROM energy_usage) as real_sql) as subquery
WHERE row_number BETWEEN 1 AND 10

更常见的情况是：

SELECT real_sql.* FROM (
SELECT ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS row_number,  * FROM (real sql query) as real_sql) as subquery
WHERE row_number BETWEEN {offset} + 1 AND {limit} + {offset}

错误：

列前缀'real_sql'与表名或别名不匹配查询中使用的名称。

Answer 1

只是不要把它放在SELECT列表中：

WITH OrderedTable AS
(
 SELECT ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS row_number,  * 
 FROM energy_usage
)   
SELECT col1, col2, col3 FROM OrderedTable WHERE row_number BETWEEN 1 AND 10;

SELECT *是常见的反模式，无论如何都应该避免。加ORDER BY (SELECT 1)将无法保证执行之间的稳定排序。

如果您只需要十行，请使用：

 SELECT TOP 10 *
 FROM energy_usage
 ORDER BY ...

不幸的是，你不会得到Selecting all Columns Except One

这样的好东西

WITH OrderedTable AS
    (
     SELECT ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS row_number,  * 
     FROM energy_usage
    )   
SELECT * EXCEPT row_number FROM OrderedTable WHERE row_number BETWEEN 1 AND 10;

Answer 2

这可以解决问题。

"columns": [
{data: "id", name: "aaa", sortable: false},
{data: "userid", name: "userid", sortable: false},
{data: "group_id", name: "group_id", sortable: false},
{data: "group_name", name: "group_name", sortable: false},
{data: "group_member", name: "group_member"},
{data: "group_fee", name: "group_fee"},
{data: "dynamic_type", name: "dynamic_type"},
{data: "dynamic_id", name: "dynamic_id"},
{data: "content", name: "content", sortable: false},
{data: "images", name: "images", sortable: false},
{data: "money", name: "money"},
{data: "is_audit", name: "is_audit", sortable: false},
{data: "audited_at", name: "audited_at", sortable: false}

将LIMIT和OFFSET应用于MS SQL Server 2008查询

2 个答案: