Sql Server 中的多次插入

Question

I want to perform multiple insert in my sql server 2008 DB.

The insert looks like;

--pseudocode:

INSERT INTO DOCS (c1,c2) 
VALUES ('v1','v2'); 

SELECT @iddoc= scope_identity(); 

UPDATE table2 
SET y1='y1',y2='y2' 
WHERE iddoc=@iddoc;

This statement 50000 times.

I have a file batch (.sql) but I have problem with memory.

Answer 1

Try like this, using GO statement

INSERT INTO DOCS (c1,c2) 
VALUES ('v1','v2'); 

SELECT @iddoc= scope_identity(); 

UPDATE table2 
SET y1='y1',y2='y2' 
WHERE iddoc=@iddoc;

GO 50000

Answer 2

I suspect you are trying to load a table (DOCS) with rows from a CSV file. For that, the easiest way would be to write an SSIS package or use the import/export wizard to load the data quickly.

What I'm not clear about is what "table2" is used for. I'm guessing it is taking the same row data from the CSV but splits different columns into a seperate table. Easiest way to do this, if the data volume is low (like it is now), load everything into one table and then execute a single insert.. select... statement to bulk copy part of the table columns into table 2.

Answer 3

@treep - you can accomplish this task with a while loop.

DECLARE @a INT = 1

DECLARE @tmpId TABLE
(
    newid INT
)

WHILE(@a < 50000)
BEGIN
    INSERT INTO DOCS (c1,c2)
    VALUES ('v1','v2'); 

    INSERT INTO @tmpId
    SELECT scope_identity(); 
    SET @a = @a + 1  
END

UPDATE T2
SET T2.y1='y1',T2.y2='y2' 
FROM table2 T2
INNER JOIN @tmpId TM ON TM.ID = T2.iddoc