1 )
SELECT A.SSID FROM T_TABLE_1 A, T_TABLE_2 B WHERE A.SSID = B.SSID AND B.NUMBER = '123456';`
2)
delete from T_TABLE_3 where ssid='139729252';
delete from T_TABLE_4 where ssid='139729252';
Result of 1) is a SSID, eg: '139729252' ，how can I use the result of 1) into 2), no need to copy and paste every time? thanks.
Just use IN operator if you expect more than 1 record to be retrieved using your select statement. Else you can use = operator.
Ex:
delete from T_TABLE_3
where ssid=(SELECT A.SSID FROM T_TABLE_1 A, T_TABLE_2 B WHERE A.SSID = B.SSID AND B.NUMBER = '123456');
or
delete from T_TABLE_3
where ssid IN (SELECT A.SSID FROM T_TABLE_1 A, T_TABLE_2 B WHERE A.SSID = B.SSID AND B.NUMBER = '123456');
delete from T_TABLE_3 where ssid in ( select a.ssid t_table_1 a, t_table_2 b where a.ssid=b.ssid and b.number='123456');
or
Related
Let's say we have three columns: A, B, and C.
I would like to filter the results as follows:
The values of A and B are the same (duplicated) for > 1 (more than 1) row, and the value of C is always different.
In the attached image, the values that appear selected would meet the conditions mentioned above.
What I've tried:
SELECT
a.notation as A, a.gene as B, b.id as C
FROM
`db-dummy`.sgdata c
join `db-dummy`.g_info a on a.rec_id = c.gen_id
join `db-dummy`.spec_data b on b.rec_id = c.spec_id GROUP BY A, B HAVING COUNT(*) > 1;
I thought that using GROUP BY and HAVING COUNT(*) > 1 I could get the desired result, but I get the following error:
SQL Error [1055] [42000]: (conn=1632) Expression #3 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'db-dummy.b.spec_id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by
If you had a single table, I would suggest just using exists. But because you have a join, use window functions. If you are. looking for different values of id:
SELECT A, B, C
FROM (SELECT a.notation as A, a.gene as B, b.id as C,
MIN(b.id) OVER (PARTITION BY a.notation, a.gene) as min_id,
MAX(b.id) OVER (PARTITION BY a.notation, a.gene) as max_id
FROM `db-dummy`.sgdata c JOIN
`db-dummy`.g_info a
ON a.rec_id = c.gen_id JOIN
`db-dummy`.spec_data b
ON b.rec_id = c.spec_id
) x
WHERE min_id <> max_id;
If you are just looking for multiple rows for a given A and B, then you can use:
SELECT A, B, C
FROM (SELECT a.notation as A, a.gene as B, b.id as C,
COUNT(*) OVER (PARTITION BY a.noation, a.gene) as cnt
FROM `db-dummy`.sgdata c JOIN
`db-dummy`.g_info a
ON a.rec_id = c.gen_id JOIN
`db-dummy`.spec_data b
ON b.rec_id = c.spec_id
) x
WHERE cnt > 1;
SELECT * FROM `db-dummy`.sgdata a
LEFT JOIN
(SELECT COUNT(Id) as count, notation, gene
FROM `db-dummy`.sgdata
GROUP BY notation, gene
HAVING COUNT(id) > 1) b
on a.notation = b.notation AND a.gene = b.gene
I got a query
sql_query := ' Select A,B,C from table where A = 'DG54FDG45SD' and B = 'FS487' ;
and I want to add it a if clause like this :
sql_query := ' Select A,B,C,D from table where A = 'DG54FDG45SD' and B = 'FS487' and (if C = 'AR' then AND D in (select uid from table2 where id = 'DGF'));
Thanks !
You don't do this with an if in a where clause -- simply because it is not necessary. You can arrive at the same logic uses basic boolean operations:
where A = 'DG54FDG45SD' and
B = 'FS487' and
(D in (select uid from table2 where id = 'DGF') or
C <> 'AR'
)
If you need to take NULL into account:
where A = 'DG54FDG45SD' and
B = 'FS487' and
(D in (select uid from table2 where id = 'DGF') or
C <> 'AR' or C is null
)
I have got the script right but the execution time of completion is about 5 Mins to delete 11320860 records. Is there alternate way of writing this query so that the execution time is reduced ?
Scenario is same record combination can have E as well as A records. And the code is trying to delete both A and E records if there exists at least one E record for the same combination.
Delete from tableA u
WHERE EXISTS
(Select 1 from tableA w
WHERE w.a = u.a
AND w.b = u.b
AND w.c = u.c
AND w.d = u.d
AND w.flag ='E' ); - Del about 11320860 records in 4 Mins
So you need this, I think:
Delete from tableA u
WHERE u.flag in ('A', 'E')
and EXISTS
(Select 1 from tableA w
WHERE w.a = u.a
AND w.b = u.b
AND w.c = u.c
AND w.d = u.d
AND w.flag ='E')
This way also should work:
delete from tableA
where flag in ('A', 'E')
and (a, b, c, d) in
(select a, b, c, d
from tableA
where flag = 'E')
Going to use this query as a subquery, the problem is it returns many rows of duplicates. Tried to use COUNT() instead of exists, but it still returns a multiple answer.
Every table can only contain one record of superRef.
The below query I`ll use in SELECT col_a, [the CASE] From MyTable
SELECT CASE
WHEN
EXISTS (SELECT 1 FROM A WHERE
A_superRef = myTable.sysno AND A_specAttr = 'value')
THEN 3
WHEN EXISTS (SELECT 1 FROM B
INNER JOIN С ON С_ReferenceForB = B_sysNo WHERE C_superRef = myTable.sysno AND b_type = 2)
THEN 2
ELSE (SELECT C_intType FROM C
WHERE C_superRef = myTable.sysno)
END
FROM A, B, C
result:
3
3
3
3
3
3...
What if you did this? Because Im guessing you are getting an implicit full outer join A X B X C then running the case statement for each row in that result set.
SELECT CASE
WHEN
EXISTS (SELECT 1 FROM A WHERE
A_superRef = 1000001838012)
THEN 3
WHEN EXISTS (SELECT 1 FROM B
INNER JOIN С ON С_ReferenceForB = B_sysNo AND C_superRef = 1000001838012 )
THEN 2
ELSE (SELECT C_type FROM C
WHERE C_superRef = 1000001838012)
END
FROM ( SELECT COUNT(*) FROM A ) --This is a hack but should work in ANSI sql.
--Your milage my vary with different RDBMS flavors.
DUAL is what I needed, thanks to Thorsten Kettner
SELECT CASE
WHEN
EXISTS (SELECT 1 FROM A WHERE
A_superRef = 1000001838012)
THEN 3
WHEN EXISTS (SELECT 1 FROM B
INNER JOIN С ON С_ReferenceForB = B_sysNo AND C_superRef = 1000001838012 )
THEN 2
ELSE (SELECT C_type FROM C
WHERE C_superRef = 1000001838012)
END
FROM DUAL
Select BillName as A, ConsigneeName as B, ShipperName as C
from Sum_Orders
where (OrderStatus in ('Complete','Invoiced')
)
and
OrderPeriodYear IN (
(
YEAR(GETDATE())-1
)
)
Group by billname,ConsigneeName,ShipperName
I'm having duplicates in A, B, C (which is expected)
I'm trying to make a condition to
keep the value in A and set to nulls the values that repeat in B OR C
IF A = B or C then keep A and SET B or C to NULLS
Thank you, guys, :D
Is this what you want?
update t
set B = (case when B <> A then B end),
C = (case when C <> A then C end)
where B <> A or C <> A;
If you have to do this inline the perhaps a case will help.
Select Billname AS A,
CASE WHEN ConsigneeName = Billname THEN NULL ELSE ConsigneeName END,
CASE WHEN ShipperName = Billname THEN NULL ELSE ShipperName
from Sum_Orders etc ...
If the table is big, this maybe expensive on the query and pushing this logic into the query itself might be better.
If a,b and c has same value, b and c should set null, so:
Update tablename
Set B = if(A=B, null, B) , C=if(A=C, null, C)
-- where A=B or A=C
You can use 'where' if optimization is interesting!
If you're going to 'Select' value:
Select A, if(A=B, null, B) as B , if(A=C, null, C) as C from tablename