I have a database called test containing a table called Categories. I want to find the primary key column name in this table.
I wrote this SQL query:
Select COLUMN_NAME
From INFORMATION_SCHEMA.KEY_COLUMN_USAGE
Where OBJECTPROPERTY(OBJECT_ID(CONSTRAINT_SCHEMA+'.'+CONSTRAINT_NAME),
'IsPrimaryKey') = 1 AND TABLE_NAME = 'Categories'
SQL Error:
Error: ERROR 1305 (42000): FUNCTION test.OBJECTPROPERTY does not exist
How can I solve this problem?
That's why you are getting the error. OBJECTPROPERTY is a SQL Server built-in function and not present in MySQL. Moreover, your posted query will never compile cause that's a SQL Server specific query.
Related
I have a Chef recipe for creating Unix user IDs and deploying them across multiple nodes, to guarantee uniqueness and prevent devs from having to track them themselves. They merely name the application and it is granted a unique ID if an ID for that application doesn't already exist. If one does, it is simply returned to the script and user accounts are created on the webservers with the appropriate value.
I have a mysql database with a single table, called application_id_table which has two columns, id and application_name. id is autoincrementing and application name cannot be null (and must be unique).
Removing the Ruby from my script and making a couple of substitutions, my sql looks like this:
INSERT INTO application_id_table(application_name) VALUES('andy_test')
WHERE NOT EXISTS (select 1 from application_id_table WHERE
application_name = 'andy_test');
when run, I receive the syntax parsing error:
ERROR 1064 (42000): 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 'WHERE NOT EXISTS (select 1 from
application_id_table WHERE application_name = 'a'
I recall seeing that the values statement does not allow a where clause but I don't wish to use a select statement to populate the values as I'm populating them from variables supplied from within Ruby/Chef. Anyone have an idea how to accomplish this?
You want to use insert . . . select:
INSERT INTO application_id_table(application_name)
SELECT aname
FROM (SELECT 'andy_test' as aname) t
WHERE NOT EXISTS (select 1 from application_id_table ait WHERE ait.application_name = t.aname);
You should be able to plug your variable directly into the select statement, the same you would would with the VALUES statement.
Try this:
INSERT INTO application_id_table(application_name)
select 'andy_test'
WHERE NOT EXISTS (select 1 from application_id_table WHERE application_name = 'andy_test');
I'm trying to make a backup of my table in MySql but I get this 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 'table `zbackup_oc_t_city` from `oc_t_city` LIMIT 0, 30' at line 1
This is the code that I'm using to backup
SELECT * INTO TABLE `zbackup_oc_t_city` FROM `oc_t_city`
Here is my oc_t_city table:
Here is zbackup_oc_t_city
I have tried it on numerous tables and it keeps throwing me the same error... any ideas?
Thanks
If you want to create your backup table and do the backup in just one statement use
CREATE TABLE `zbackup_oc_t_city` SELECT * FROM `oc_t_city`;
CREATE TABLE ... SELECT Syntax
You can create one table from another by adding a SELECT statement at
the end of the CREATE TABLE statement:
CREATE TABLE new_tbl [AS] SELECT * FROM orig_tbl;
With MySQL you can't use SELECT ... INTO to select into a new table:
SELECT ... INTO Syntax
The SELECT ... INTO form of SELECT enables a
query result to be stored in variables or written to a file:
SELECT ... INTO var_list selects column values and stores them into
variables.
SELECT ... INTO OUTFILE writes the selected rows to a file. Column and
line terminators can be specified to produce a specific output format.
SELECT ... INTO DUMPFILE writes a single row to a file without any
formatting.
I do remember having similar troubles while working with SQL myself. One cause of error I found was the use of citation marks... try removing the citation marks like this:
SELECT * INTO zbackup_oc_t_city FROM oc_t_city;
I'm not sure this fixes your problem (but I can't see anything else wrong with your query). I hope it does though. :)
can anyone tell me the correct query to delete values from mysql db table,in my case the table name and id are accepted from the user and the row is deleted based on id.This is my query
sprintf(Query,"DELETE FROM ('%s') where id = (%d)",tb1,idt1) ;
/*table name is in form of string and id is int */
mysql_query(conn,Query);
You should remove parentheses around the table name:
sprintf(Query,"DELETE FROM '%s' where id = (%d)",tb1,idt1) ;
MySQL considers queries like this syntax errors:
delete from (mytable) where id=2;
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 '(mytable) where id=2' at line 1
(I'll assume that you know everything about SQL injection attacks, and that neither tb1 nor idt1 are constructed from user input in any shape or form).
I'm getting that error running on MySQL 5.5.8
Mysql2::Error: 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 'WHERE
(SELECT id FROM products WHERE id = NEW.brand_id) IS NULL;
EN' at line 6:
CREATE TRIGGER fk_brands_products_insert
BEFORE INSERT ON brands
FOR EACH ROW BEGIN
SELECT
RAISE(ABORT, "constraint violation: fk_brands_products")
WHERE
(SELECT id FROM products WHERE id = NEW.brand_id) IS NULL;
END;
What could be wrong?
I suspect the problem is there is no FROM clause in your select statement.
Are you sure you can raise errors inside a query like that? I can't find it anywhere. I think the proper way would be to select a COUNT or EXISTS and return the result of that INTO a variable. Then, after the query, raise an error if the result doesn't meet your expectations.
Something like this:
SELECT count(id) INTO IDCOUNT FROM products WHERE id = NEW.brand_id;
Wouldn't it be better by the way to just add a real constraint? Or do you use a storage type that doesn't support that?
The following select query works fine:
SELECT * FROM JBPM_JOB job WHERE job.ACTION_ IN (SELECT ID_ from JBPM_ACTION WHERE ACTIONEXPRESSION_ LIKE '%#{reminderAction.addAsyncProcessReminder%warning%');
However, when I try to delete the rows retrieved here, it fails
DELETE FROM JBPM_JOB job WHERE job.ACTION_ IN (SELECT ID_ from JBPM_ACTION WHERE ACTIONEXPRESSION_ LIKE '%#{reminderAction.addAsyncProcessReminder%warning%');
What is wrong here?
The error message is:
ERROR 1064 (42000): 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 'job WHERE job.ACTION_ IN (SELECT ID_ from JBPM_ACTION WHERE ACTIONEXPRESSION_ LI' at line 1
You need to specify you are deleting from the alias table, so use:
DELETE job FROM JBPM_JOB job WHERE job.ACTION_ IN (SELECT ID_ from JBPM_ACTION WHERE ACTIONEXPRESSION_ LIKE '%#{reminderAction.addAsyncProcessReminder%warning%');
i have tested the query in sql server. works fine but there is possible that the values you are deleting have some relationship with other table like PK and FK.
if they have then you have to delete the records from those tables too..........