select count(*) FROM antecedente_delito WHERE rut_polichile = NEW.rut_polichile
this statement is giving de value 0, when it should give me 18 :/ ive been trying a lot to find any bug in it.
Here's the working solution that I mocked up using/changing your code in SqlFiddle. http://sqlfiddle.com/#!2/ac2e9/1
To trouble shoot this, I would view your actual values and verify that NEW. is returning what you think it should. Sometimes it may be doing some trims or removal of special characters, especially the _ and % signs are likely to stripped in subprocedures.
I would start with the query:
select top 50 rut_polichile, NEW.rut_plichile FROM antecedente_delito
If the issue is not obvious from that add in a varbinary check:
select top 50 cast( rut_polichile as varbinary), cast(NEW.rut_plichile as varbinary) from antecedente_delito
If the table only has 18 records, then you should be good to go with the above troubleshooting, but if there is more data, I would suggest limiting your results from the above by the rowid or other identifier in a where statement.
It's not the answer, but I hope it helps you find the answer.
The SELECT privilege for the subject table if references to table columns occur via OLD.col_name or NEW.col_name in the trigger definition.
but in your trigger i can't see any trigger definition. so try without NEW.
for more info: http://www.sqlinfo.net/mysqldocs/v51/triggers.html or
http://bugs.mysql.com/bug.php?id=31068
Related
UPDATE starfsfolk
SET starfsfolk.stada=2
WHERE starfsfolk.deild LIKE '%Hugbúnaðardeild%';
UPDATE starfsfolk
SET starfsfolk.stada=3
WHERE starfsfolk.deild LIKE '%Markaðsdeild%'
is prescisely the code i'm using.
i've tried various different versions of it(like = "Markaðsdeild" or LIKE "Markaðsdeild")
most of which work if i'm using select, but i needed to use update and its not working for some reason.
This WHERE command works on select but
it returns zero rows if i'm using the update command. What am i doing wrong?
Edit:
Just to clarify, stada is set to 1 in all cases before and after the update command. it hasn't changed from 1 to 2 and 3 like i wanted it to.
Edit2: heres a screenshot of the database, i could also give you the create commands.
Edit3: Stada is bit, not int, i found out, not sure what that changes tho.
Solution: Solved myself, since bit is just 1 and 0, the error was in the creation of the table so i remade it with stada as int and now the code is working.
If the value of stada is not changed by the query then zero rows will be returned because nothing was updated.
The character sets of the server and of the client are different.
http://dev.mysql.com/doc/refman/5.5/en/charset-connection.html
So I have a bunch of users in a column that get refreshed as:
Bill#test.comXYZ
Tom#test.comXYZ
John#test.comXYZ
We refresh the database each week and I need to update these appropriate emails to:
Bill#domain.com
Tom#domain.com
John#domain.com
I figured I can use concat to do the latter, but I am stuck on the former issue. Is there a way to split the values (like split Bill#test.comXYZ into Bill - #test.comXYZ and then remove the #TEXT values?).
Anyways, any help will be much appreciated.
You can use the mySQL replace function, i.e.
UPDATE mytable
set myfield = replace (myfield, '#test.comXYZ', 'domain.com')
http://dev.mysql.com/doc/refman/5.0/en/string-functions.html#function_replace
I have two columns with mySQL:
"part_no"
"pdf_link"
I need the "pdf_link" column to automatically grab/duplicate the "part_no" value and add a .pdf extension on the end.
For example: If part_no = 00-12345-998, then pdf_link = 00-12345-998.pdf
I need this to happen every time I insert.
I appreciate the help.
Erik
you can achive this effect by using triggers I think.
http://dev.mysql.com/doc/refman/5.0/en/trigger-syntax.html
CREATE TRIGGER ins_pdf AFTER INSERT ON MY_TABLE SET #pdf_link = concat(#part_no,'.pdf')
Why store this extra computed information in the database? You can do this in the query when you pull it out, or, if needed, you could make a view that does it only as-needed.
Example pseudo query (my brain hurts right now, so this is only an example):
select concat(`part_no`, ".pdf") as `pdf_link` from `parts`;
If you really need this, you could use a trigger to duplicate the data ans add the extra string.
I have a query in mySQL that's meant to return search terms that are used on our site. Yes, this is for a tag cloud, and yes, I know it's a mullet :)
We've got an admin page where administrators can view search terms and choose to exclude them from showing up in the cloud. These words go into the "badWords" table. We've gotten some terms like "foo%2525252525252520bar", and we're having trouble getting those excluded.
In pseudocode, the query to get the search terms for the cloud is:
SELECT * FROM `searchTerms` WHERE `word` NOT IN ( SELECT `word` FROM `badWords` )
This works fine, unless one of the terms returned from the subquery has a % in it. Is there a way to escape the entire subquery? I've tried doing a
replace( SELECT `word` FROM `badWords`, '%', '\%' )
... but that's apparently not syntactically correct.
I can do two queries if need be, but wondered if there's a way to get it done as is.
Thanks!
==============================
UPDATE: closing this for now, as I think the error lies elsewhere. Will report back once I know for sure, but don't want folks wasting time answering the question here if it's not the correct question...
Upvoted both of the replies received so far. Thanks, guys.
==============================
UPDATE 2: sigh Nevermind... can't close it :\
==============================
FINAL UPDATE: Well, looks like escaping the value isn't the problem. The admin page passes the value in the URL before it's added to the badWords table. In passing the value via the URL, it changes. So what's added to badWords is actually "foo%25252525252520bar" (there's one less "25" sequence). If I manually update the value in badWords and add back the missing "25" it works as expected. So no need to replace or escape anything. I just need to fix those URL values properly.
==============================
I don't think the % is your problem here. I think that you're trying to use REPLACE() on the subquery itself (SELECT ...), and not on a column value (word). Try this instead:
SELECT * FROM `searchTerms`
WHERE `word` NOT IN (
SELECT REPLACE(`word`, '%', '\%') AS word FROM `badWords`
);
Good luck!
I'm not very good with MySQL syntax, but SQL Server let's you do it this way:
SELECT * FROM `searchTerms` WHERE `word` NOT IN ( SELECT REPLACE(`word`, '%', '\%') FROM `badWords` )
NOTE: Basically all I did was move your REPLACE over some =) Hope this helps.
I'm writing an application and I'm using MySQL as DBMS, we are downloading property offers and there were some performance issues. The old architecture looked like this:
A property is updated. If the number of affected rows is not 1, then the update is not considered successful, elseway the update query solves our problem.
If the update was not successful, and the number of affected rows is more than 1, we have duplicates and we delete all of them. After we deleted duplicates if needed if the update was not successful, an insert happens. This architecture was working well, but there were some speed issues, because properties are deleted if they were not updated for 15 days.
Theoretically the main problem is deleting properties, because some properties are alive for months and the indexes are very far from each other (we are talking about 500, 000+ properties).
Our host told me to use replace into instead of deleting properties and all deprecated properties should be considered as DEAD. I've done this, but problems started to occur because of syntax error and I couldn't find anywhere an example of replace into with a where clause (I'd like to replace a DEAD property with the new property instead of deleting the old property and insert a new to assure optimization). My query looked like this:
replace into table_name(column1, ..., columnn) values(value1, ..., valuen) where ID = idValue
Of course, I've calculated idValue and handled everything but I had a syntax error. I would like to know if I'm wrong and there is a where clause for replace into.
I've found an alternative solution, which is even better than replace into (using simply an update query) because deletes are happening behind the curtains if I use replace into, but I would like to know if I'm wrong when I say that replace into doesn't have a where clause. For more reference, see this link:
http://dev.mysql.com/doc/refman/5.0/en/replace.html
Thank you for your answers in advance,
Lajos Árpád
I can see that you have solved your problem, but to answer your original question:
REPLACE INTO does not have a WHERE clause.
The REPLACE INTO syntax works exactly like INSERT INTO except that any old rows with the same primary or unique key is automaticly deleted before the new row is inserted.
This means that instead of a WHERE clause, you should add the primary key to the values beeing replaced to limit your update.
REPLACE INTO myTable (
myPrimaryKey,
myColumn1,
myColumn2
) VALUES (
100,
'value1',
'value2'
);
...will provide the same result as...
UPDATE myTable
SET myColumn1 = 'value1', myColumn2 = 'value2'
WHERE myPrimaryKey = 100;
...or more exactly:
DELETE FROM myTable WHERE myPrimaryKey = 100;
INSERT INTO myTable(
myPrimaryKey,
myColumn1,
myColumn2
) VALUES (
100,
'value1',
'value2'
);
In your documentation link, they show three alternate forms of the replace command. Even though elided, the only one that can accept a where clause is the third form with the trailing select.
replace seems like overkill relative to update if I am understanding your task properly.