首先:这是用于序列化的 ETL 存储过程,因此并行性无关紧要。
我需要在加载期间为标记分配自定义 ID 号。我不能使用身份字段,因为 ID 号是唯一的“桶号” - 本质上是另一个编号字段。
我目前使用以下代码:
DECLARE @idRunner smallint
SELECT @idRunner = ISNULL(MAX([Id]),0)
FROM sim.[Variable]
WHERE [BucketRef] = @simBucketNo
DECLARE variable_cursor CURSOR FOR
SELECT DISTINCT p.[Variable]
FROM simstg.[Parameter] p
LEFT OUTER JOIN sim.[Variable] v ON (p.[Variable] = v.[Code])
WHERE p.[BucketRef] = @stgBucketNo
AND v.BucketRef = @simBucketNo
AND v.Code IS NULL
OPEN variable_cursor
DECLARE @variable VARCHAR(64)
FETCH NEXT FROM variable_cursor INTO @variable
WHILE @@FETCH_STATUS = 0
BEGIN
SET @idRunner = @idRunner + 1
INSERT INTO sim.[Variable] …
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