SQL Server 中的 %Rowtype 等效项

Question

我即将将存储过程从 pl/sql 转换为 SQL Server。该过程使用游标循环通过select 查询的结果。是否有与 ORACLE rowtype 构造等效的 SQL Server？

Answer 1

@HarveyFrench 回复时没有@rowtype。要生成所有列变量您可以使用此选择并从结果中复制粘贴：

SELECT 'DECLARE @customPrefix' + COLUMN_NAME  + '  ' +  DATA_TYPE + ';'
FROM INFORMATION_SCHEMA.COLUMNS
WHERE 
TABLE_NAME = 'Your_table' 

Answer 2

与 oracle 相比，这是不喜欢 SQL Server 的一个重要原因。

我很失望 SS 没有 %TYPE 和 %ROWTYPE。这些在最初编写代码时节省了数小时的工作时间，并且在需要更改列类型的情况下，不必返回并重新编写所有代码。

在 Oracle 中，我曾经写过类似的东西：

将@MyRowVar 声明为 ATable%ROWTYPE；

在 SQL Server 中，我只需要这样写：

DECLARE @External_ID                AS BIGINT = NULL;
DECLARE @PlatformID                 AS INT = NULL;
DECLARE @ActorIDOfReseller          AS INT = NULL;
DECLARE @ActorIDOfClient            AS INT = NULL;
DECLARE @ActorIDOfExtension         AS INT = NULL;
DECLARE @CallType                   AS NCHAR (10) = NULL;
DECLARE @CallInitiatedDate          AS DATE = NULL;
DECLARE @CallInitiatedTimeHH24MI    AS TIME (0) = NULL;
DECLARE @TimePeriodID               AS INT = NULL;
DECLARE @CallAnswered               AS DATETIME = NULL;
DECLARE @CallAnsweredYN             AS BIT = NULL;
DECLARE @CallDispositionID          AS INT = NULL;
DECLARE @CountryID                  AS INT = NULL;
DECLARE @CallPrefixID               AS INT = NULL;
DECLARE @FromNumber                 AS VARCHAR (32) = NULL;
DECLARE @ToNumber                   AS VARCHAR (80) = NULL;
DECLARE @CallDuration               AS INT = NULL;
DECLARE @CallCostToExtension        AS DECIMAL (10, 6) = NULL;
DECLARE @CallCostToClient           AS DECIMAL (10, 6) = NULL;
DECLARE @CallCostToReseller         AS DECIMAL (10, 6) = NULL;
DECLARE @CallCostToAdmin            AS DECIMAL (10, 6) = NULL;
DECLARE @Flow                       AS VARCHAR (3) = NULL;
DECLARE @CallStart                  AS DATETIME = NULL;
DECLARE @MoneyUnit                  AS VARCHAR (32) = NULL;
DECLARE @Prefix                     AS VARCHAR (32) = NULL;
DECLARE @External_CallID            AS VARCHAR (255) = NULL;

这让我很伤心。

哈维

Answer 3

使用游标的SQL方式如下图

DECLARE @colA varchar(50), @colB varchar(50)

DECLARE myCursor CURSOR FOR
Select columnA, columnB From table

OPEN myCursor

FETCH NEXT FROM myCursor INTO @colA, @colB

WHILE @@FETCH_STATUS = 0
BEGIN

--do something with @colA and @colB

FETCH NEXT FROM myCursor INTO @colA, @colB

END

CLOSE myCursor
DEALLOCATE myCursor

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