I have 2 tables with phone numbers.
In Table A I have to delete all phone numbers thats not in Table B.
In Table B the phonenumbers are with conterycode, but in Table A they are without conterycode.
I therefor try to use a command similar to LIKE %Phonenumber%
I have tried this code, but that is giving me a syntax error
DELETE FROM temp_table
WHERE NOT EXISTS (
SELECT *
FROM TableB
WHERE WorkTelephoneNumber LIKE temp_table.%PhoneNumber%
);
#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 '%PhoneNumber%
)' at line 5
You can try below -
DELETE FROM temp_table
WHERE NOT EXISTS (
SELECT *
FROM TableB
WHERE WorkTelephoneNumber LIKE concat('%',temp_table.PhoneNumber,'%')
);
A subquery will be very slow. you can use join instead
Delete t1 from temp_table t1
join TableB on tableB.WorkTelephoneNumber like concat('%',t1.PhoneNumber,'%')
Related
I am trying to insert data in table emp_master where token_no and vehicle_no is available, I am using mentioned below query to add and check the record
insert into emp_master (token_no, vehicle_no) values (1234,12345) where not exists (select * from emp_master where vehicle_no = '12345');
but whenever I am trying this then error comes in as
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 * from emp_master where vehicle_no = '12345')' at line 1
The suggestion will be helpful
If you need to have this check in your insert statement, you can structure it like this:
SQL Fiddle: http://sqlfiddle.com/#!9/d3dd77/1
insert into emp_master (token_no, vehicle_no)
select 1234, 12345
from dual
where not exists (select * from emp_master where vehicle_no = '12345');
Another way to do this on any DBMS:
DB Fiddle Demo
insert into emp_master (token_no, vehicle_no)
select token_no, vehicle_no
from (
select 1234 token_no, 12345 vehicle_no
) rec
where not exists (select * from emp_master where vehicle_no = rec.vehicle_no);
Put a UNIQUE constraint on the vehicle_no column, and then insert the data with no WHERE clause. Instead, handle the exception if it fails.
This is working:
select * FROM Work_Request A where EXISTS ( select 1 from Customer B where (B.lsource&128)!=0 and B.license_id=A.license_id) ;
As per Delete all rows in a table based on another table this delete should also work but instead giving error:
delete FROM Work_Request A where EXISTS ( select 1 from Customer B where (B.lsource&128)!=0 and B.license_id=A.license_id) ;
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 'A where EXISTS ..
...
your delete statement should be like this
delete A.* FROM Work_Request A
where EXISTS ( select 1 from Customer B where (B.lsource&128)!=0 and B.license_id=A.license_id) ;
you are missing name of table thats gonna delete ...have fun :-)
I have the following SQL query:
DELETE FROM table_b b WHERE NOT EXISTS (SELECT * FROM table_a a WHERE a.some_id = b.some_id)
and am getting the following error:
[Err] 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 'b WHERE NOT EXISTS(SELECT * FROM table_a a WHERE a.some_id =
b.some_id)' at line 1
this seems to suggest that aliases cannot be used with SQL delete statements (?)
Yes you can use alias in DELETE query. Just you have use that alias after DELETE keyword than it will work. It specifies that from which table you have delete the records.
Try this:
DELETE b
FROM table_b b
WHERE NOT EXISTS (SELECT * FROM table_a a WHERE a.some_id = b.some_id)
If I'm understanding your query correctly and your wanting to delete all records that are not in table a from table b. A cleaner way to write it might be
DELETE FROM table_b WHERE id NOT IN (SELECT id FROM table_a)
I'm trying to cross-check a row that exists in two tables using a MySQL query in phpmyadmin and then, if a userID is found in both tables, insert their userID and user name into another table. Here's my code:
INSERT INTO userswithoutmeetings
SELECT user.userID
IF('user.userID'='meeting.userID');
I keep getting plagued by 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
'IF('user.userID'='meeting.userID')' at line 3
Other statements I've tried have worked but not deposited the values in the table.
Something like
INSERT INTO userswithoutmeetings(userId,userName)
SELECT DISTINCT a.userId, a.userName
FROM table1 a
INNER JOIN table2 b ON (a.userId = b.userId)
I'm having difficulty deleting the desired rows from my table in MySQL. I'm using a rather complex subquery to select the rows, but for some reason I'm unable to delete them using a similar syntax.
delete * from table1 as t1
where t1.col1 in
(select y.col1
from table2 x
join
(select col1, col2
from table2
where col2 like "%- 2%") y
on x.col2 = replace(y.col2, "- 2", ""));
Again, I can select the exact rows I wanted deleted, but when I change the query to delete I get the following 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...
Any help is greatly appreciated.
Remove the * after DELETE. You don't usually delete individual columns, you delete entire rows.
yep, you should use
delete from table1
or if there are more than one table in the query, you need to enter the name of the table you want to delete from.
delete table1 from table1 inner join table2 on table1.id = table2.t1ID
Drop the *. A DELETE is an all or nothing kind of action.
Try DELETE FROM instead of DELETE * FROM which is not valid.