sql if exists update else insert not working
how to find out if a record already exists in a database, if it doesn't insert a new record
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i have a table with 3 generic keys which are also foreign keys. This is my query --
IF (EXISTS(SELECT * FROM table1 WHERE col_1 =4)) BEGIN UPDATE table1 SET col_2 = 3, col_3 = 100 WHERE col_1 = 4 END ELSE BEGIN INSERT INTO table1 (col_1, col_2, col_3) VALUES(4, 2, 27) END
This gives me a syntax error. Engine used InnoDB. Collation: utf8_swedish_ci
I tried this too --
INSERT INTO table1 (col1, col2, col3) VALUES (:val1, :val2, :val3) ON DUPLICATE KEY UPDATE col2=:val2, col3=:val3
This doesn't work properly and only insert the rows inspite of having duplicate keys.
Generally for scenarios where you want to : "update/delete an existing record if present or insert a new row if the record doesn't exist" , you can use MERGE Command provided by Oracle.
PSB the below example provided by Oracle:
CREATE TABLE bonuses (employee_id NUMBER, bonus NUMBER DEFAULT 100); INSERT INTO bonuses(employee_id) (SELECT e.employee_id FROM employees e, orders o WHERE e.employee_id = o.sales_rep_id GROUP BY e.employee_id); SELECT * FROM bonuses; EMPLOYEE_ID BONUS ----------- ---------- 153 100 154 100 155 100 156 100 158 100 159 100 160 100 161 100 163 100 MERGE INTO bonuses D USING (SELECT employee_id, salary, department_id FROM employees WHERE department_id = 80) S ON (D.employee_id = S.employee_id) WHEN MATCHED THEN UPDATE SET D.bonus = D.bonus + S.salary*.01 DELETE WHERE (S.salary > 8000) WHEN NOT MATCHED THEN INSERT (D.employee_id, D.bonus) VALUES (S.employee_id, S.salary*0.1) WHERE (S.salary <= 8000); EMPLOYEE_ID BONUS ----------- ---------- 153 180 154 175 155 170 159 180 160 175 161 170 179 620 173 610 165 680 166 640 164 720 172 730 167 620 171 740
SQL - IF EXISTS UPDATE ELSE INSERT Syntax Error, Would work with tbl_id and row_nr having UNIQUE key. This is the method DocJonas linked to with an example. If Row Exists Update, Else Insert in SQL Server A user mailed me a block of C# code that updated a row if it existed and inserted, if the row was new. He wanted the same code to be done in SQL Server as well.
IF EXISTS (SELECT 1 FROM table1 WHERE col_1 = '4') THEN BEGIN UPDATE assignment_question SET col_2 = '3', col_3 = '100' WHERE col_1 = '4'; END ELSE BEGIN INSERT INTO table1 (col_1, col_2, col_3) VALUES (4, 2, 27); END
If exists then update else insert, Work on SQL Fiddle Only problem is, you can't use it like a normal query. delimiter $$ create procedure select_or_insert() begin IF EXISTS (select * from users where username = 'something') THEN update users set id= Using NOT EXISTS for Inserts. The answer comes by understanding that SQL statements by themselves are a transaction. So within the same transaction as the insert we can determine if the cust_id already exists. I should mention there is one caveat for using this method. At least one record needs to exist in customer_totals. [cc lang=”sql”]
You can try the below code as an alternative to if exists
SELECT COUNT(*) INTO COUNT FROM TABLE1 WHERE COL_1 = '4' IF (COUNT > 0) THEN BEGIN UPDATE TABLE1 SET COL_2 = '3', COL_3 = '100' WHERE COL_1 = '4'; END ELSE BEGIN INSERT INTO TABLE1 (COL_1, COL_2, COL_3) VALUES (4, 2, 27); END
Hope this helps.
How to insert or update using single query?, You can try this. IF EXISTS(select * from test where id=30122) update test set name='john' where id=3012 ELSE insert into test(name) values('john');. To avoid this situation, usually, developers add T-SQL If Exists statement and drop the object if it is already available in the database. Let’s say we wish to deploy a stored procedure ‘stpGetAllMembers’ in the SQLShack test database.
DELIMITER // CREATE PROCEDURE p() BEGIN IF EXISTS(SELECT * FROM table1 WHERE col_1 = 4) THEN UPDATE table1 SET col_2 = 3, col_3 = 100 WHERE col_1 = 4; ELSE INSERT INTO table1 VALUES(4, 2, 27); END IF; END// DELIMITER ;
- there must be
END IFfor every
- I created my procedure with
mysqlso according to documentation:
If you use the mysql client program to define a stored program containing semicolon characters, a problem arises. By default, mysql itself recognizes the semicolon as a statement delimiter, so you must redefine the delimiter temporarily to cause mysql to pass the entire stored program definition to the server.
Sql if exists update else insert multiple rows, Sql if exists update else insert multiple rows. text present in dgv son update number cell with new value + present value problem is how to do soi want to exists In MS Access I can do in one SQL statement a update if exists else a insert. (snip)This query will add a record in SOURCE into DEST if that record does not exist in DEST else it does a update. This query however does not
try to put THEN before BEGIN also try to put END IF after the last row
hope this work :
IF (EXISTS(SELECT * FROM table1 WHERE col_1 =4)) **THEN** BEGIN UPDATE table1 SET col_2 = 3, col_3 = 100 WHERE col_1 = 4 END ELSE BEGIN INSERT INTO table1 (col_1, col_2, col_3) VALUES(4, 2, 27) END **END IF**
How to INSERT If Row Does Not Exist (UPSERT) in MySQL, Learn how to INSERT an If Row Does Not Exist (UPSERT) in MySQL. MySQL Using INSERT ON DUPLICATE KEY UPDATE For example, our books table might contain a few records already: With our visual version of SQL, now anyone at your company can query data from almost any source—no coding required. MySQL insert row if not exists else update record This PDO statement will update the record if a combination of user_id and product_code exists by adding supplied quantity to existing quantity and updating added_on field. Otherwise will add a new row with given values.
UPSERT - Update else Insert in Informatica, If a new record arrives the UPDATE will fail since PRIMARY KEY values in target port are not matching. 4. The new record will be inserted to the table at last. This There is slight change in Query, Just try to select the record first which you want to insert in database, if it is not exist then you can insert in it.
check if record exists then update else insert – SQLServerCentral, I have to check if this exists in table, if it does not exist only then insert. I cannot use MERGE as it is giving me trigger issues and I tried using if exists(below is my code) to check if record exists in table , if there is record then update else insert. Only issue I have with this code is the SQL-89 style joins. Often you have the situation that you need to check if an table entry exists, before you can make an update. If it does not exist, you have to do an insert first. The simple straightforward approach is this: (The example is for an entry in the WordPress wp_postmeta table)
SQL Server: MERGE (AKA UPSERT) =(INSERT / UPDATE / DELETE), 4. IF (Key Exists). UPDATE row for key. ELSE. INSERT new row with Let us see the MERGE statement in action with a SQL Server example 2. when the "Update Else Insert" session property is set along with "Treat Source Rows as Updates": load time is 176 seconds. 3. when the Target Table pre-SQL is defined with a DELETE SQL along with "Treat Source Rows as Inserts": load time is 120 seconds. The first approach cannot be used since the flat file is an incremental.
- Why don't you just do an
ON DUPLICATE KEY UPDATE?
- @Barmar i tried that but it doesnt work. Documents said it will cause errors in presence of multiple keys
- in mysql there is an
replace. you can may use this
- Why do you use characters for the comparisons, but numbers for the insert? What's the type of the columns? Note, unless you execute this in a transaction (and lock the entire table), you might get some funny results.
- @Clockwork-Muse : datatypes aint an issue. I have edited to avoid confusion.
- I was about to suggest the same to OP. Merge is also there in SQL
- @user983983 You can use
*instead of 1 but for performance do not use
*. Both will work same
- Why do you think this will solve the problem, if
- For that matter, where are you getting
assignment_question? This still appears to throw the same syntax error, anyways.