I have an SQL query where I am joining 2 tables, on another table - A and B
Table A is being joined on table E on ID = ID
Table B is being joined on table E on ID = SKU
Table A and Table B both have columns Price, Value
Sometimes there are null values in here
I have done Select ID, (A.Price + B.Price) AS TEST, (A.Value + B.Value)
AS TEST2 from E
But I am getting NULL values for all of the results for test and test2
Query is:
select PII, PII_Count, SK_Count, (PII_Count - SK_Count) as TEST from CIEER
left join ccq on CIEER.PII = ccq.PRIE
left join ccrq on CIEER.PII = ccrq.SKIE
order by PII_Count desc
If PII_count or SK_Count is null then it will return null ,to prevent null from calculation you should use nvl function like below:
(nvl(PII_count, 0) - nvl(SK_Count,0)) as TEST
Alternatively you can also use COALESCE function as well.
Related
I need help in populating ins_dts and upd_dts logic.
Insert and Update date present in both tables so I need to know in coalesce if value is populating from a.col_cmmt_txt, a.col_dscr_txt, a.col_annt_txt, then use insert and update date from test1 table else if populated value from b.target_col_desc then populate insert and update from test2 table :
select
a.schema, a.table, a.column,
coalesce(a.col_cmmt_txt, a.col_dscr_txt, a.col_annt_txt, b.target_col_descr) as coldscr,
a.dw_ins_dts, a.dw_upd_dts
from
test1 a
left join
test2 b on a.schema = upper(b.schema)
and a.table = upper(b.table)
and a.column = upper(target_col)
To me, it looks like a case:
SELECT a.schema,
a.table_,
a.column_,
COALESCE (a.col_cmmt_txt,
a.col_dscr_txt,
a.col_annt_txt,
b.target_col_descr) AS coldscr,
--
CASE
WHEN a.col_cmmt_txt IS NOT NULL
OR a.col_dscr_txt IS NOT NULL
OR a.col_annt_txt IS NOT NULL
THEN
a.dw_ins_dts
ELSE
b.dw_ins_dts
END,
--
CASE
WHEN a.col_cmmt_txt IS NOT NULL
OR a.col_dscr_txt IS NOT NULL
OR a.col_annt_txt IS NOT NULL
THEN
a.dw_upd_dts
ELSE
b.dw_upd_dts
END
FROM test1 a
LEFT JOIN test2 b
ON a.schema = UPPER (b.schema)
AND a.table_ = UPPER (b.table_)
AND a.column_ = UPPER (target_col)
I have a 2 Tables with below structures
Table 1-- Containing Values like this.
OTHER_CODE
CAPACITY_CODE
Result
A
1
A
5
A
9
A
(null)
B
2
B
6
B
2
Table_2- With Values Like
OTHER_CODE
CAPACITY_CODE
Result
A
1
A
A
5
B
A
(null)
C
A
ELSE
D
B
ALL
E
(null)
ALL
F
I need to Join Table_1 with Table_2 on basis of columns OTHERCODE and CAPACITYCODE and update values in Column Result of Table**1 **using a Merge statement.
I need to handle and match Values based on ELSE and ALL values too.
Check for Direct Match
Check if ALL or ELSE condition
The Final TABLE_1 must look like
OTHER_CODE
CAPACITY_CODE
Result
Explanation
A
1
A
Direct Join
A
5
B
Direct Join
A
9
D
Satsifying ELSE condition
A
(null)
C
Direct join with NVL handling
B
2
E
As Value for CapacityCode in TableB is ALL
B
6
E
As Value for CapacityCode in TableB is ALL
B
2
E
As Value for CapacityCode in TableB is ALL
I Tried Joining both the tables but the was unable to satisfy Else and ALL conditions. Hope if someone can help me on this.
There are Several **Result ** Columns like , Result 1 ,2 in both tables which needs to be updated using the same logic.
Thanks in Advance.
here is a fiddle to work on https://dbfiddle.uk/FMKdWzQT
I got the query working. by using a case statement and assigning a number so I could use max then I just remove the number.
SELECT a.other_code,
a.capacity_code,
(
SELECT SUBSTR(max(
CASE WHEN b.other_code = a.other_code AND a.capacity_code = b.capacity_code THEN concat('3',b.myresult)
WHEN b.other_code = a.other_code AND a.capacity_code is null and b.capacity_code is null THEN concat('2',b.myresult)
WHEN b.other_code = a.other_code AND b.capacity_code in ('ELSE', 'ALL') THEN concat('1',b.myresult)
else null end),2)
FROM table2 b ) as myresult
FROM table1 a
however I can not get the update to work. I tried a merge it is give me the unstable row error and I tried an update select but that is giving me single row subquery error so maybe someone else can take a look at the fiddle. here was my attempt at the update.
UPDATE table1
SET myresult = (
SELECT myresult
FROM (
SELECT a.other_code,
a.capacity_code,
(
SELECT SUBSTR(max(
CASE WHEN b.other_code = a.other_code AND a.capacity_code = b.capacity_code THEN concat('3',b.myresult)
WHEN b.other_code = a.other_code AND a.capacity_code is null and b.capacity_code is null THEN concat('2',b.myresult)
WHEN b.other_code = a.other_code AND b.capacity_code in ('ELSE', 'ALL') THEN concat('1',b.myresult)
else null end),2)
FROM table2 b ) as myresult
FROM table1 a
)t2
WHERE table1.other_code = t2.other_code and nvl(table1.capacity_code,'x') = nvl(t2.capacity_code,'x')
);
Let's say I have a table events with structure:
id
value_array
XXXX
[a,b,c,d]
...
...
I have a second table values_of_interest with structure:
value
x
y
z
a
I want to find id's that have any of the values found in values_of_interest. All else equal, what would be the most performant SQL to make this happen? (I am using BigQuery, but feel free to answer more generally)
My current thought is:
SELECT
DISTINCT e.id
FROM
events e, values_of_interest vi
WHERE
EXISTS(
SELECT
value
FROM
UNNEST(e.value_array) value
JOIN
vi ON vi.value = e.value
)
Few quick options for BigQuery Standard SQL
Option 1
select id
from `project.dataset.events`
where exists (
select 1
from `project.dataset.values_of_interest`
where value in unnest(value_array)
)
Option 2
select id
from `project.dataset.events` t
where (
select count(1)
from t.value_array as value
join `project.dataset.values_of_interest`
using(value)
) > 0
I would write this using exists and a join:
select e.id
from `project.dataset.events` e
where exists (select 1
from unnest(e.value_array) val join
`project.dataset.values_of_interest` voi
on val = voi.value
);
I have tables:
Result containing 5 columns: result_id, num_1, num_2, num_3, num_4
Ref containing 4 columns: num_1, num_2, num_3, num_4
Columns num contain random int in range of 1-9
Aim of exercise is to display all result_id from Result table which have num values combination present in Ref table and to display result_id which have not met combination criteria.
I've been trying left joining ref to result, but unfortunately no success. Could you please share some light how to deal with it?
If you want the result_id for which combination exists in the ref table then use following JOIN query:
select distinct r.result_id
from results r
join ref on r.num_1 = ref.num_1 and r.num_2 = ref.num_2
and r.num_3 = ref.num_3 and r.num_4 = ref.num_4
If you want the result_id for which combination do not exists in REF table then use the LEFT JOIN as follows:
select r.result_id
from results r
left join ref on r.num_1 = ref.num_1 and r.num_2 = ref.num_2
and r.num_3 = ref.num_3 and r.num_4 = ref.num_4
where ref.num_1 is null -- or use PK / Not nullable column of REF table here
Assuming you want the columns to "line up" and you want to add a flag to the result_id in the first table, then use exists:
select t1.*,
(case when exists (select 1
from table2 t2
where t2.n1 = t1.n1 and t2.n2 = t1.n2 and t2.n3 = t1.n3 and t2.n4
)
then 'present' else 'not present'
end) as flag
from t2;
Please consider this Query:
SELECT tesd.State_Code,
tesd.City_Code,
tesd.Row_ID,
tesd.Qsno,
tesd.Total_Period,
tesd.Current_Period,
tesd.Week,
tesd.Block_No,
tesd.Family_ID,
tesd.Line_ID,
tesd.Page_ID
INTO #tmp
FROM Specification_Master tesm
INNER JOIN Specification_Details tesd
ON tesd.Master_Id = tesm.Id
WHERE tesm.[Year] = 2000
AND tesm.[Month] = 10
AND tesd.City_Code IN ('001')
I queried some data from 2 tables and insert them in #tmp .then I want to select data from 2 other tables and check one of that tables has values in #tmp tbale:
SELECT *
FROM tbl_Details D
INNER JOIN tbl_Master tem
ON D.ID_Master = tem.Id
WHERE D.Period <= 5
AND EXISTS (
SELECT Row_ID
FROM #tmp tm
WHERE tm.Current_Period > 1
AND tm.State_Code = tem.State_Code
AND tm.City_Code = tem.City_Code
AND tm.Qsno = tem.Qsno
)
AND D.[Status] > 2
when I run this query I got just one row but when I change EXISTS to NOT EXISTS I got more rows.I run this query seperatly :
SELECT Row_ID
FROM #tmp tm,tbl_Master tem
WHERE tm.Current_Period > 1
AND tm.Ostan_Code = tem.State_Code
AND tm.City_Code = tem.City_Code
AND tm.Porseshname_ID = tem.Qsno
and it returns 30 rows. Why Exists has this such behaivior ?
Exists returns a Boolean value based on the results of the subquery. It matters not if there are 1 or 30 rows returned. The number of rows you are retrieving is based on the select * statement, not the Exists clause.