Select records from one table, check if it exists in another table then insert into a 3rd table in C#
Question
I have 3 tables say table A, B, C. Their schema structure is different but they have a unique column ID. Using C# i want to
SELECT * FROM A
Then check if any of the records selected from A exists in B (ID being key). If it exists i insert the records in C. How can i go about this?
2 answers
solution1
1 2015-08-04 14:06:32
INSERT INTO C(ID, ...)
SELECT A.ID, ....
FROM A
INNER JOIN B ON A.ID = B.ID
solution2
0 ACCPTED 2015-08-04 14:06:20
You can do
insert into C(id, Name)
select id, name from A
inner join B on A.id = B.id
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.
Related Question
C# EF if row exists in table one select it else select from another table
Check if table exists in c#
How to get all records from one table and save it on another table by c# in winforms?
How to Select data from table 1 and insert into table 2 in PostgresQLusing C#
how to insert values from one table to another table in mysql with other parameters in c#
Select from table, then insert that (value + 1) into another table?
Check if column exists and then do selects from table using C#
C# : Is there any C# function to insert primary key from one table into another
Check if table exists with if statement in C#?
Check if a SQL table exists in C#
Related Tags