I tested this code:
UPDATE books SET price='20000' WHERE user_id='2'
IF ROW_COUNT()=0
INSERT INTO store_books(name,user_id) VALUES ('test1','2')
I encountered the following error.
error : You have an error in your SQL syntax; check the manual that
corresponds to your MariaDB server version for the right syntax to use
near 'IF ROW_COUNT()=0 INSERT INTO store_books(name,user_id) VALUES
('test1','2')' at line 2
Is there any solution to solve this problem?
I don't want to use INSERT INTO ... ON DUPLICATE KEY UPDATE (because i have multi keys in my main table).
Above example is trial for finding new way.
Pattern that i want:
Update(if exists) ELSE Insert.
Two things:
INSERT ... ON DUPLICATE KEY UPDATE ... is by far the best way to do what you want to do. If you don't do this, you'll have to use a database transaction to make sure you maintain integrity for the operation you want.
MySQL (unlike, say, MS SQL server) doesn't allow conditional execution of queries except in stored procedures. Read this. If conditional in SQL Script for Mysql
Related
I'm trying to run the following MySQL command:
USE database_name;
DROP TEMPORARY TABLE IF EXISTS only_with_balance;
DROP TEMPORARY TABLE IF EXISTS keys_to_match;
CREATE TEMPORARY TABLE only_with_balance as (
SELECT
*
FROM
transactions t
WHERE
t.balance is not NULL
and (t.transaction_status_id = 4 or t.transaction_status_id = 5)
and (t.date between "2022-05-01" and "2022-08-24" )
);
But I'm getting a syntax error while trying to run the all the commands at once.
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DROP TEMPORARY TABLE IF EXISTS only_with_balance;
DROP TEMPORARY TABLE IF EXIST' at line 2
When I run each command separately, the result is the expected.
Can someone help me here?
What am I forgetting?
In MySQL, by default the query interface only allows one SQL statement per call.
There's an option to enable multi-query per call, but it must be set at connect time. Some MySQL connectors do this by default, or allow it as an option, but some do not. You didn't say if you're writing code or if you're submitting this set of queries through a client (though you tag the question 'dbeaver' you don't say anything else about that). So I can't guess what interface you're using for these queries.
Anyway, there's no advantage to using multi-query. The default mode is one SQL statement per call. That's what I do.
Using the default mode of a single SQL statement per call has some advantages:
Supports prepared statements and bound parameters (you can't run multiple statements in a single prepare call, even if you enable multi-query).
Simplifies processing errors and warnings.
Simplifies processing result sets.
This question already has answers here:
Multiple SQL query not working with delimiter on DBeaver
(3 answers)
Closed 7 months ago.
I use dbeaver to connect to a Mariadb. When I try to run a multi-line update statements, e.g.
update x set warehouse_id='WH02' where soh_id='f0b4d220';
update x set warehouse_id='WHU1' where soh_id='17482705';
I get the error 'Caused by: java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '...''. If I run the same queries against the database connection created in MySQL workbench, it runs without any problem.
I assume that there is an issue with the usage of ';' but I cannot find a way of running multiple update statements in Mariadb. What am I doing wrong?
To do a batch update in dbeaver, one needs to run script by selecting the queries and running Alt+X.
You could try this:
update x
set warehouse_id = case soh_id
when 'f0b4d220' then 'WH02'
when '17482705' then 'WHU1'
end
where soh_id in ('f0b4d220', '17482705')
when you have a unique key on the field soh_id you can use the INSERT INTO .... ON DUPLICATE KEY statement like this.
INSERT INTO x (soh_id, warehouse_id)
VALUES
('f0b4d220','WH02')
,('17482705','WHU1')
ON DUPLICATE KEY UPDATE warehouse_id = VALUES(warehouse_id;
(NOTE: I know this is an error that's commonly asked about, but most of the time, the issue is in an INSERT statement. I couldn't find a question on this website where this error happened during an UPDATE.)
I have a table in MySQL (InnoDB / v. 5.7.19) called RESULTS which has, among others, two columns called TYPE and STATUS. Both are of type ENUM, with PASS, FAIL and IGNORE being the supported values in both. I'm trying to run this UPDATE statement on that table, using Workbench (also tried the same directly on the DB machine, using the mysql command):
update `RESULTS` set `TYPE`='IGNORE' where `STATUS`='IGNORE';
I'm getting this error:
Error Code: 1136. Column count doesn't match value count at row 1
Changing the single quotes to double quotes didn't help. I'm able to run this query successfully:
select count(`TYPE`) from `RESULTS` where `STATUS`='IGNORE';
I'm probably making a silly mistake here, but can anyone point out what's wrong with the UPDATE statement?
As requested I am posting it as an answer.
The error basically is self-explanatory like performing an operation on set of attributes but the values provided in the query are not enough. But in your case, you are performing an update operation with all attributes and their values and still, this error appears it may be a case that there is some trigger is registered for this table probably on before/after the event, If that is the case you need to update or remove that trigger if no needed.
I am creating a table in MySQL for which I only ever want it to contain one tuple at a time. To enforce this, I am trying to create a trigger which will truncate the table each time an INSERT occurs. However, I am running into problems.
SQL:
CREATE TRIGGER `tbl_hire_truncate`
BEFORE INSERT ON `tbl_hire`
FOR EACH ROW
BEGIN
TRUNCATE TABLE `tbl_hire`;
END
Error:
#1064 - You have an error in your SQL syntax; check the manual that corresponds
to your MySQL server version for the right syntax to use near '' at line 5
Every example of a trigger that I've seen uses a FOR EACH loop, but it certainly doesn't make much sense with what I am trying to achieve.
How can I rewrite my SQL to achieve my goal?
I'm trying to import some data from a MS-Access file to my SQL Server database. I keep getting primary key errors because some of the data overlaps. Therefore I tried using ON DUPLICATE KEY UPDATE as well as INSERT IGNORE. Both seem to be unknown to my SQL Server (running 2008 R2) as I get syntax errors. Do I need some add-on library or is INSERT IGNORE and ON DUPLICATE KEY not usable when inserting with a select query to .mdb? Here's the code snippet:
INSERT INTO XCManager.XC_DATA1 (STATION_ID, SENSORNAME, TIME_TAG, ORIG_VALUE, ED_VALUE, SOURCE)
SELECT STATION_ID, SENSORNAME, TIME_TAG, ORIG_VALUE, ED_VALUE, SOURCE
FROM OPENDATASOURCE ('Microsoft.Jet.OLEDB.4.0',
'Data Source=H:\OPERATIONS & MAINTENANCE SECTION\Modeling & Gauging\PCBase2\PCBASE2 Files.mdb')...RUMN3
ON DUPLICATE KEY UPDATE STATION_ID=STATION_ID
Here's the parsing result:
Msg 156, Level 15, State 1, Line 3
Incorrect syntax near the keyword 'ON'.
SQL Server does not support INSERT IGNORE or ON DUPLICATE. That syntax is specific to MySQL.
If you had looked up the INSERT statement in the SQL Server manual you would have seen that.
You need to use the MERGE statement in order to update or insert.
when inserting with a select query to .mdb
I don't understand that part. If you have SQL Server you are not "inserting into a .mdb".
Are you maybe running MS Access instead? In that case the MERGE will not work either as far as I know (you would need to check the manual for MS Access for an equivalent statement)
not sure if this got resolved, but one way to accomplish "insert ignore" in sql server is to check the "ignore duplicates" box when creating a unique index on a set of columns for a table. When you do this, SQLServer will not throw an exception, just a warning, so if you bulk insert with an index like this, then it will ignore the dupes for you.
The trouble with this is, if you have a TON of rows (10s of millions or more) having an index on the table as you bulk insert will be slower.