How to insert data in multiple tables using single query in SQL Server? - sql

Question

I'm trying to insert data into multiple tables if it doesn't already exist. I can't seem to figure this out at all.
Table 1:
CREATE TABLE [dbo].[search_results]
(
[company_id] [int] NULL,
[title] [text] NULL,
[link] [text] NULL,
[domain] [text] NULL,
[index] [int] NULL,
[id] [int] PRIMARY KEY IDENTITY(1,1) NOT NULL
)
Table 2:
CREATE TABLE [dbo].[statements]
(
[statement_link_id] [int] NULL,
[statement_page] [text] NULL,
[statement_text_location] [text] NULL,
[statement_description] [text] NULL,
[statement_description_html] [text] NULL,
[statement] [int] NULL,
[id] [int] PRIMARY KEY IDENTITY(1,1) NOT NULL
)
This is what I want to do:
check to see if the company_id and the link already exist in the table or not.
SELECT *
FROM search_results
WHERE company_id = 4 AND link = 'https://test.com';
If the data does not exist, insert it into two tables
INSERT INTO search_results (company_id, link, title, domain)
VALUES (4, 'https://test.com', 'title', 'test.com');
and also insert the search_result last inserted id to the following table. corporate_statement value is always 1
INSERT INTO corporate_statements (statement_link_id, corporate_statement)
VALUES (743, 1);
I'm trying this based on what I found on SO
DECLARE #result AS TABLE (id int, company_id int, link text, title text, domain text);
WITH cte AS
(
SELECT *
FROM (VALUES (4, 'https://test.com', null, null)) AS t(company_id, link, title, domain)
)
INSERT INTO #result
SELECT *
FROM
(INSERT INTO dbo.search_results (company_id, link, title, domain)
OUTPUT inserted.*
SELECT * FROM cte
WHERE NOT EXISTS (SELECT * FROM dbo.[search_results]
WHERE company_id = cte.company_id
AND CAST(link AS varchar(250)) = CAST(cte.link AS varchar(50))
)) r
SELECT * FROM #result;
Even trying with a single insert statement, I get the following error:
Msg 213, Level 16, State 1, Line 8
Column name or number of supplied values does not match table definition.
As you can see, I also tried to cast it to varchar since it was throwing error when I hadn't. How can update this?

Answer 1

To me - this seems a lot cleaner, and it also will be a lot simpler to understand (and maintain!) in the future:
-- check to see if your data already exists
IF NOT EXISTS (SELECT *
FROM search_results
WHERE company_id = 4 AND link = 'https://test.com')
BEGIN TRY
BEGIN TRANSACTION
-- if not -> insert into the first table
INSERT INTO search_results (company_id, link, title, domain)
VALUES (4, 'https://test.com', 'title', 'test.com');
-- grab the last identity value from that previous INSERT
DECLARE #LastId INT;
SELECT #LastId = SCOPE_IDENTITY();
-- insert into the second table
INSERT INTO corporate_statements (statement_link_id, corporate_statement)
VALUES (#LastId, 1);
COMMIT;
END TRY
BEGIN CATCH
-- in case of an error rollback the full transaction
ROLLBACK;
END CATCH;
and you're done. Or am I missing something? I think this would be doing what you're described in the intro of your post - not necessarily what you're showing in your code...