|--------------------- |------------------ |
| AttendanceCode | AttendanceDescription |
|--------------------- |------------------ |
| MC | Medical Leave |
|--------------------- |------------------ |
| NAPFA | NAPFA |
|--------------------- |------------------ |
| Present | Present |
|--------------------- |------------------ |
我正在使用SQL Server 2014.我有一个包含两列的表，AttendanceCode和AttendanceDescription，我使用下拉列表来显示AttendanceDescription。我希望下拉列表顺序显示＆＃34; Present＆＃34;第一。我尝试使用此查询：
SELECT AttendanceCode, AttendanceDescription
FROM journalattendancestatus
ORDER BY (CASE AttendanceDescription WHEN 'P' THEN 1 ELSE NULL END) AttendanceDescription
这个
SELECT AttendanceCode, AttendanceDescription
FROM journalattendancestatus
ORDER BY CASE WHEN AttendanceDescription = 'Present' THEN 1 ELSE 2 END,
AttendanceDescription";
但它们都不起作用。我也尝试将其更改为AttendanceCode，其中P＆＃39; P＆＃39;代表＆＃39;呈现＆＃39;
答案 0 :(得分：1)
仅在Exception in thread "main" [Error: failed to subEval expression]
[Near : {... name == 'Raja' && age == 30 && joiningDate <="24-Aug-2016" ....}]
^
[Line: 1, Column: 46]
at org.mvel2.compiler.AbstractParser.reduce(AbstractParser.java:2627)
at org.mvel2.compiler.AbstractParser.arithmeticFunctionReduction(AbstractParser.java:2526)
at org.mvel2.MVELInterpretedRuntime.parseAndExecuteInterpreted(MVELInterpretedRuntime.java:147)
at org.mvel2.MVELInterpretedRuntime.parse(MVELInterpretedRuntime.java:47)
at org.mvel2.MVEL.eval(MVEL.java:270)
at org.mvel2.MVEL.evalToBoolean(MVEL.java:623)
at com.scb.mvel.App.isCriteriaMatch(App.java:27)
at com.scb.mvel.App.main(App.java:21)
Caused by: java.lang.RuntimeException: uncomparable values <<Wed Aug 24 12:52:37 IST 2016>> and <<24-Aug-2016>>
at org.mvel2.math.MathProcessor.doOperationNonNumeric(MathProcessor.java:321)
at org.mvel2.math.MathProcessor._doOperations(MathProcessor.java:234)
at org.mvel2.math.MathProcessor.doOperations(MathProcessor.java:79)
at org.mvel2.math.MathProcessor.doOperations(MathProcessor.java:48)
at org.mvel2.util.ExecutionStack.op(ExecutionStack.java:178)
at org.mvel2.compiler.AbstractParser.reduce(AbstractParser.java:2567)
... 7 more
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.util.Date
at java.util.Date.compareTo(Date.java:129)
at org.mvel2.math.MathProcessor.doOperationNonNumeric(MathProcessor.java:318)
... 12 more
子句
AttendanceDescription列一次
ORDER BY答案 1 :(得分：0)
排序依据只是按列对数据进行排序。
示例：
SELECT * FROM user WHERE AGE=18 ORDER BY NAME DESC
这将采用您的SQL并按反向字母顺序对其进行排序。
你到底想要做什么？我或许可以帮助您解决您想要完成的任务。
答案 2 :(得分：0)
对于此查询，空值将首先出现..
ORDER BY (CASE AttendanceDescription WHEN 'P' THEN 1 ELSE NULL END) AttendanceDescription
将其更改为
WHEN 'P' THEN 1 ELSE 2 END
第二个查询几乎接近..
ORDER BY CASE WHEN AttendanceDescription = 'Present' THEN 1 ELSE 2 END,
AttendanceDescription";
但是当1有关系时它再次回到AttendanceDescription来打破关系，所以在这种情况下它可以是任何东西..所以删除那个
答案 3 :(得分：0)
您的第二个查询正在运行。它有语法错误。我在END语句附近删除了'，'，在查询结束时删除了双引号。
SELECT AttendanceCode, AttendanceDescription
FROM journalattendancestatus
ORDER BY CASE WHEN AttendanceDescription = 'Present' THEN 1 ELSE 2 END
AttendanceDescription;
在第一个查询中，您正在搜索列中不存在的字母“P”。你可以像这里一样使用。
ORDER BY (CASE when AttendanceDescription like 'Pre%' THEN 1 ELSE NULL END) AttendanceDescription
答案 4 :(得分：0)
不是最佳选择，只是一个想法：
SELECT AttendanceCode, AttendanceDescription, 1 AS OrderIndex
FROM journalattendancestatus
WHERE AttendanceDescription = 'P'
UNION
SELECT AttendanceCode, AttendanceDescription, 2 AS OrderIndex
FROM journalattendancestatus
WHERE AttendanceDescription != 'P'
ORDER BY OrderIndex, AttendanceCode, AttendanceDescription
答案 5 :(得分：0)
这个适用于我的HANA
.header{
width:100%;
height:88px;
position: fixed;
left:0;
top:0;
z-index: 9;
background: #009ddc; /* for test */
}
答案 6 :(得分：0)
declare @flttaxrate float
declare @fltArea float
declare @fltbasetax float
set @fltArea=139.3
set @flttaxrate=50
set @fltbasetax=@fltArea*@flttaxrate
select @fltbasetax
select ceiling(@fltbasetax)
请检查输出选择@fltbasetax，选择ceiling（@fltbasetax）