Default values in Insert Select in SQL
How to pass default values in the Insert Select construction in SQL?
I have a table:
create table1 (field1 int, field2 int, field3 int default 1337)
create table2 (field1 int, field2 int)
I want to insert table2
into table1
with a construction similar to this:
insert into table1 select field1, field2, DEFAULT from table2
Is it possible to use something instead of D开发者_Python百科EFAULT
in my example to get the task done? How are previously selected tables usually inserted with default values?
Try
INSERT INTO table1 (field1, field2)
SELECT field1, field2 FROM table2
I tested this using SQL Server 2005
DECLARE @Table1 TABLE(
field1 INT,
field2 INT,
field3 INT DEFAULT 1337
)
INSERT INTO @Table1 (field1,field2,field3) SELECT 1, 2, 3
DECLARE @Table2 TABLE(
field1 INT,
field2 INT
)
INSERT INTO @Table2 (field1,field2) SELECT 15, 16
INSERT INTO @Table1 (field1,field2)
SELECT field1,
field2
FROM @Table2
SELECT * FROM @Table1
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