My first query looks as below
SELECT a.name, b.desc, T3.desc1 as Output
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM q_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
INNER JOIN table3 T3 on b.tid = T3.tid
WHERE b.status = 'FAIL'
My second query looks as below
SELECT a.name, b.desc, T4.desc2 as Output
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM q_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
INNER JOIN table4 T4 on b.tid = T4.tid
WHERE b.status = 'FAIL'
In my final result I want Output column which will have values either from T3.desc1 or T4.desc2
How can I combine both queries into a single query?
If the table2.id exists in one of the tables - table3 or table4, a LEFT JOIN will simplify the query with the help of IFNULL().
SELECT a.name,
b.desc,
IFNULL(T3.desc1, T4.desc2) as Output
FROM table1 a
INNER JOIN table2 b ON a.id = b.id
INNER JOIN
(
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM oac.qualys_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
LEFT JOIN table3 T3 on b.tid = T3.tid
LEFT JOIN table4 T4 on b.tid = T4.tid
WHERE b.status = 'FAIL'
Related
I have created the following query which includes 2 joins and is working fine:
SELECT a.name, b.tid
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM oac.qualys_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
WHERE b.status = 'FAIL';
The output is coming as follows:
id tid name
17695 19512 abc.com
17781 19628 abc1.com
17805 19732 abc2.com
17806 19703 abc3.com
17807 19704 abc4.com
I have another table table3 which has following values
id tid name details
842 19512 abc.com Details Description 1
843 19628 abc1.com Details Description 2
I want to join the above query with table3 on tid such that I get the following output
id tid name details
17695 19512 abc.com Details Description 1
17781 19628 abc1.com Details Description 1
I am using the following query but it is returning only one row which is not correct
SELECT a.name, b.tid
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM oac.qualys_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
INNER JOIN table3 T3 on b.tid = T3.tid
WHERE b.status = 'FAIL'
Make your query a sub-query and join it to the table
WITH BASELINE AS
(
SELECT a.name AS name, b.tid AS tid
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM oac.qualys_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
WHERE b.status = 'FAIL';
)
-------------------------------------------------------------------
SELECT
base.tid
, base.name
, t3.details
FROM
BASELINE base
LEFT JOIN
Table3 t3
ON base.tid = t3.tid
Is not the neatest solution but it always works for me
My first query looks as below
SELECT a.name, b.desc, T3.desc1 as Output
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM oac.qualys_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
INNER JOIN table3 T3 on b.tid = T3.tid
WHERE b.status = 'FAIL'
AND b.type = 'Type1'
My second query looks as below
SELECT a.name, b.desc, T4.desc2 as Output
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM oac.qualys_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
INNER JOIN table4 T4 on b.tid = T4.tid
WHERE b.status = 'FAIL'
AND b.type = 'Type2'
In my final result I want Output column which will have values either from T3.desc1 or T4.desc2
How can I use UNION to combine both queries into a single query?
just put UNION ALL between the queries. Youll have to alias the columns
Do this:
Query1 UNION Query2; -- for union without duplicates (the set union as in maths)
OR
Query1 UNION ALL Query2; -- for union with duplicates
So it should be:
SELECT a.name, b.desc, T3.desc1 as Output
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM oac.qualys_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
INNER JOIN table3 T3 on b.tid = T3.tid
WHERE b.status = 'FAIL'
AND b.type = 'Type1'
UNION
SELECT a.name, b.desc, T4.desc2 as Output
FROM table1 a INNER JOIN
table2 b
ON a.id = b.id
INNER JOIN (
SELECT b2.id, b2.status, MAX(b2.created_time) as max_time
FROM oac.qualys_scan b2
GROUP BY b2.id , b2.qualys_type
) t on t.id = a.id
AND t.status=b.status
AND t.max_time = b.created_time
INNER JOIN table4 T4 on b.tid = T4.tid
WHERE b.status = 'FAIL'
AND b.type = 'Type2';
I have so far written the following mysql query which is joining 4 tables as follows:
SELECT
T3.fault, t4.name
FROM table2 T2
INNER JOIN (
SELECT a.*
FROM table1 a
LEFT JOIN table1 b ON a.item_id = b.item_id AND a.submit_id < b.submit_id
WHERE b.submit_id IS NULL
) T1 ON T1.item_id = T2.item_id
INNER JOIN table3 T3 ON T1.id = T3.run_id
LEFT JOIN table4 T4
ON 3.runname_id = T4.id
order by count(*) desc;
Below is sample Data for table 2 which has item_id as PK
Example query: select * from table2 where item_id = '15907';
item_id host
15907 abc.com
7303 cde.com
7304 abcd.com
7305 cdedf.com
I have now recently added a table table5 which looks as below and has item_id as PK. I want to join table5 with table2 on item_id and want to retrieve value for restoreid also in my final query.
item_id restoreId
15907 12342
7303 12342
7304 14342
7305 14342
How to implement join between table5 and table2 on item_id? My select query should also retrieve T5.restoreId along with T3.fault, t4.name
select your_table.fault,your_table.name,t5.restoreid
from (
SELECT
T3.fault, t4.name,t2.item_id
FROM table2 T2
INNER JOIN (
SELECT a.*
FROM table1 a
LEFT JOIN table1 b ON a.item_id = b.item_id AND a.submit_id < b.submit_id
WHERE b.submit_id IS NULL
) T1 ON T1.item_id = T2.item_id
INNER JOIN table3 T3 ON T1.id = T3.run_id
LEFT JOIN table4 T4
ON 3.runname_id = T4.id
) as your_table left join table5 t5 on your_table.item_id = t5.item_id
SELECT
T3.fault, t4.name, T5.restoreid
FROM table2 T2
INNER JOIN (
SELECT a.*
FROM table1 a
LEFT JOIN table1 b ON a.item_id = b.item_id AND a.submit_id < b.submit_id
WHERE b.submit_id IS NULL
) T1 ON T1.item_id = T2.item_id
INNER JOIN table3 T3 ON T1.id = T3.run_id
LEFT JOIN table4 T4
ON T3.runname_id = T4.id
LEFT JOIN table5 ON T2.item_id = T5.item_id;
I have 5 tables.
I want to get common users in table 1, 2 and 3 that are not in table 4 and 5.
Can someone please help me :)
Tables
table1(userid,discount)
table2(userid,discount)
table3(userid,discount)
table4(userid,discount)
table5(userid,discount)
One way, left join on the table rows to omit:
select *
from table1 a
join table2 b on (a.userid = b.userid)
join table3 c on (a.userid = c.userid)
left join table4 d on (a.userid = d.userid)
left join table5 e on (a.userid = e.userid)
where d.userid is null and e.userid is null;
Getting the users common to tables 1, 2, 3 is easy -- just do an inner join. To get all of those users which are not in tables 4 or 5, you could test for their non-existence in these tables in the where clause.
select *
from table1
join table2 on table1.userid = table2.userid
join table3 on table1.userid = table3.userid
where
not exists (select * from table4 where table4.userid = table1.userid)
and not exists (select * from table5 where table5.userid = table1.userid)
Try this query
SELECT t1.userid, t2.userid, t2.userid, t4.userid, t5.userid
FROM table1 t1
LEFT JOIN table2 t2 ON (t2.userid = t1.userid)
LEFT JOIN table3 t3 ON (t3.userid = t1.userid)
LEFT JOIN table4 t4 ON (t4.userid = t1.userid)
LEFT JOIN table5 t5 ON (t5.userid = t1.userid)
GROUP BY t1.userid
HAVING t1.userid IS NOT NULL
AND t2.userid IS NOT NULL
AND t3.userid IS NOT NULL
AND t4.userid IS NULL
AND t5.userid IS NULL
SELECT *
FROM tableA a
JOIN tableB b ON (a.userid = b.userid)
JOIN tableC c ON (a.userid = c.userid)
LEFT JOIN tableD d ON (a.userid = d.userid)
LEFT JOIN tableE e ON (a.userid = e.userid)
WHERE d.userid IS NULL and e.userid IS NULL;
I am trying to execute the following query:
update table3 d set status = 'Complete'
where d.id in
(
select b.id from table1 a, table3 b, table2 c
where a.id = b.table1_id
and c.id = b.table2_id
and c.examId = 16637 -- will be passed in by user
and a.id in (46,47,48,49) -- will be passed in by user
);
So, I'm trying to update multiple rows of table3.
table3 is a join table between table1 and table2.
wrap it in a subquery, (thus creating a temporary table for the result). I'm also recommending to use ANSI SQL-92 format.
update table3 d
set status = 'Complete'
where d.id in
(
SELECT ID
FROM
(
select b.id
from table1 a
INNER JOIN table3 b
ON a.id = b.table1_id
INNER JOIN table2 c
ON c.id = b.table2_id
where c.examId = 16637 and
a.id in (46,47,48,49)
) xx
);
or by using JOIN
update table3 d
INNER JOIN
(
SELECT ID
FROM
(
select b.id
from table1 a
INNER JOIN table3 b
ON a.id = b.table1_id
INNER JOIN table2 c
ON c.id = b.table2_id
where c.examId = 16637 and
a.id in (46,47,48,49)
) xx
) y ON d.id = y.id
set status = 'Complete'