Question

我要将存储过程从pl / sql转换为SQL Server。该过程使用游标循环遍历select查询的结果。是否有与ORACLE rowtype构造等效的SQL Server？

Answer 1

与oracle相比，这是一个不喜欢SQL Server的重要原因。

我很失望SS没有％TYPE和％ROWTYPE。这些可以节省最初编写代码时的工作时间，如果需要更改列的类型，则可以省去返回并重新编写所有代码的工作。

在Oracle中我曾经写过类似的东西：

DECLARE @MyRowVar AS ATable％ROWTYPE;

在SQL Server中，我只需写这个：

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;

这让我非常难过。

哈维

Answer 2

使用游标的SQL方式如下所示

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

reference link

Answer 3

@HarveyFrench做出回应时，没有@rowtype。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'

SQL Server中的％Rowtype等效项

3 个答案: