Inserting multiple select statements into a table

2020-07-13 10:09发布

问题:

Is it possible to do something like this in SQL Server:

INSERT INTO MyTable (Col1,Col2,Col3,Col4,Col5,Col6,Col7) VALUES

SELECT Col1 FROM Func1(),

SELECT Col2 FROM Func2(),

SELECT Col3,Col4,Col5 FROM Func3(),

SELECT Col6 FROM Func4(),

SELECT Col7 FROM Func5()

I have a large number of functions which return one-value results and one function which returns 3 columns. I would like to insert all of this data into one row of a table?

I can see the function returning muliple columns as possibly being a problem?

回答1:

If all functions return just one row...

INSERT INTO
  MyTable (Col1,Col2,Col3,Col4,Col5,Col6,Col7)
SELECT
  f1.col1, f2.col2, f3.col3, f3.col4, f3.col5, f4.col6, f5.col7
FROM
  (SELECT Col1 FROM Func1())           AS f1
CROSS JOIN
  (SELECT Col2 FROM Func2())           AS f2
CROSS JOIN
  (SELECT Col3,Col4,Col5 FROM Func3()) AS f3
CROSS JOIN
  (SELECT Col6 FROM Func4())           AS f4
CROSS JOIN
  (SELECT Col7 FROM Func5())           AS f5

If the functions return more than one row, you need to join them in the normal way; with predicates that determine which left row gets joined to which right row.



回答2:

 INSERT INTO MyTable (Col1,Col2,Col3,Col4,Col5,Col6,Col7) VALUES

 SELECT Col1 FROM Func1(),

 SELECT Col2 FROM Func2(),

 SELECT Col3 FROM (SELECT Col3,Col4,Col5 FROM Func3()),

 SELECT Col4 FROM (SELECT Col3,Col4,Col5 FROM Func3()),

 SELECT Col5 FROM (SELECT Col3,Col4,Col5 FROM Func3())

 SELECT Col6 FROM Func4(),

 SELECT Col7 FROM Func5()


回答3:

You have to remove Values and all ","and brackets around each select statement.