SQL Server中的ORDER BY CASE语句用于根据条件对查询结果进行排序。如果在使用ORDER BY CASE时遇到问题,可能是由于以下原因: 1. 语法错误:请确保CASE语句的语法正...
select * from ai order by charindex(no,'4,1,2') --解决方案2,并且每组再按照id降序排列 --利用函数case select * from ai order by case when no='4' then 1 when no='1' then 2 when no='2' then 3 end,id desc --解决方案3 --利用UNION 运算符 select * from ai where no='4' uni...
order by charindex(no,'4,1,2') --解决方案2 --利用函数case select * from ai order by case when no='4' then 1 when no='1' then 2 when no='2' then 3 end --解决方案3 --利用UNION 运算符 select * from ai where no='4' union all select * from ai where no='1'...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric SQL database in Microsoft Fabric Sorts data returned by a query in SQL Server. Use this clause to:...
Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.TransactSql.ScriptDom v161.8901.0 Represents the order by clause that can be used in statements like select. C# 复制 [System.Serializable] public class OrderByClause : Microsoft.SqlServer.TransactSql.ScriptDom.T...
Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.TransactSql.ScriptDom v161.8901.0 Represents the order by clause that can be used in statements like select. C# 複製 [System.Serializable] public class OrderByClause : Microsoft.SqlServer.TransactSql.ScriptDom.TSq...
Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.TransactSql.ScriptDom v161.8901.0 Represents the order by clause that can be used in statements like select. C# Copier [System.Serializable] public class OrderByClause : Microsoft.SqlServer.TransactSql.ScriptDom.T...
Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.TransactSql.ScriptDom v161.8901.0 The items. C# 复制 public System.Collections.Generic.IList<Microsoft.SqlServer.TransactSql.ScriptDom.ExpressionWithSortOrder> OrderByElements { get; } Property Value IList<Expr...
SqlServer.TransactSql.ScriptDom Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.DacFx v150.5282.3 The items. C# 複製 public System.Collections.Generic.IList<Microsoft.SqlServer.TransactSql.ScriptDom.ExpressionWithSortOrder> OrderByElements {...
虽然SQLSERVER里也有IF和CASE,不过MYSQL里的IF语句的语法跟SQLERVER有很大出入 1、IF(expr,v1,v2)函数 IF(expr,v1,v2)如果表达式expr是TRUE(expr<>0 and expr<>NULL),则IF()的返回值为v1; 否则返回值为v2。IF()的返回值为数字值或字符串值,具体情况视其所在语境而定 ...