二、“order by”引发的乱序 经过一番排查,发现罪魁祸首其实是order by。当使用order by的字段存在多行相同值时,就会导致上面出现的乱序问题,这里我们来看下官方的解释[1]: ❝If multiple rows have identical values in theORDER BYcolumns, the server is free to return those rows in any order, ...
这种行为的一种表现是带有和不带有 LIMIT 的 ORDER BY 查询可能会以不同的顺序返回行,如本节后面所述。 原文: If multiple rows have identical values in the ORDER BY columns, the server is free to return those rows in any order, and may do so differently depending on the overall execution plan...
所以我们可以确定这个SQL执行时是会找到limit要求的行后立马返回查询结果的。 不过就算它立马返回,为什么分页会不准呢? 官方文档里面做了如下说明: If multiple rows have identical values in the ORDER BY columns, the server is free to return those rows in any order, and may do so differently depending ...
这种行为的一种表现是带有和不带有 LIMIT 的 ORDER BY 查询可能会以不同的顺序返回行,如本节后面所述。 原文: If multiple rows have identical values in the ORDER BY columns, the server is free to return those rows in any order, and may do so differently depending on the overall execution plan...
“If multiple rows have identical values in the ORDER BY columns, the server is free to return those rows in any order, and may do so differently depending on the overall execution plan. In other words, the sort order of those rows is nondeterministic with respect to the nonordered columns...
order_by_expression Specifies a column or expression on which to sort the query result set. A sort column can be specified as a name or column alias, or a non-negative integer representing the position of the column in the select list. Multiple sort columns can be specified. Column names ...
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SELECT Measures.[Reseller Order Count] ON COLUMNS, Order( [Date].[Calendar].[Calendar Quarter].MEMBERS, Measures.[Reseller Order Count], DESC ) ON ROWS FROM [Adventure Works] 请注意,在此示例中, 当DESC 标志更改为 BDESC 时,层次结构被破坏,并且返回日历季度列表而不考虑层次结构:复制...
If multiple rows have identical values in theORDER BYcolumns, the server is free to return those rows in any order, and may do so differently depending on the overall execution plan. In other words, the sort order of those rows is nondeterministic with respect to the nonordered columns. ...
Calculating Average between two datetime columns Calculating the RATE as the similar financial function in Excel - SQL Server 2014-2016 Call a webservice from TSQL (Stored Procedure) Call function from view Call function on Linked server Call getdate from linked server call the multiple .sql files...