Add column in Table items based on left join on item_category table. I want to add column itemcategory_category in the items table based on the left join
=ADDCOLUMNS (
items, LOOKUPVALUE (
'item_category'[ITEMCATEGORY_CATEGORY],
'items'[KEY_PRODUCTCATEGORY], item_category[KEY_PRODUCTCATEGORY]
)
)
Items Table
KEY_PRODUCTCATEGORY
1
item_category table
KEY_PRODUCTCATEGORY ITEMCATEGORY_CATEGORY
1 A
If you have one to one relationship
Table = ADDCOLUMNS(items,"new",RELATED(item_category[ITEMCATEGORY_CATEGORY]))
If you have no relationship
Table 2 = ADDCOLUMNS(items,"new",CALCULATE(MAXX(filter(item_category,item_category[KEY_PRODUCTCATEGORY]=MAX(items[KEY_PRODUCTCATEGORY])),item_category[ITEMCATEGORY_CATEGORY])))
If you are only keen on LOOKUPVALUE with or without relationship. LOOKUPVALUE is not dependent upon any relationship but it has performance issues.
Table 3 = ADDCOLUMNS(items,"new",LOOKUPVALUE(item_category[ITEMCATEGORY_CATEGORY],item_category[KEY_PRODUCTCATEGORY],items[KEY_PRODUCTCATEGORY]))
I tested out with following and it works fine.
Related
I want to find the orders number from table#orders where DelivaryDateRevision less than max revisions from each country(table#maxrevisions). Countrycode is not the foreign key to the other table.
Can I fetch the orders table records if the country code is missing in the maxrevisions table.
Table: orders
OrderNumber | CountryCode | DelivaryDateRevision
123--------------- IN-------------------9
234--------------- US-------------------3
238-------------- IN------------------ 3
table: maxrevisions
CountryCode| MaxRevision
IN ---------------6
US--------------- 4
My query:
SELECT distinct o.ordernumber,o.countrycode
FROM orders o
left outer join maxrevisions m
on o.CountryCode=m.CountryCode
and
o.DelivaryDateRevision<rs.MaxRevision;
but I am getting the wrong result. Can I get any help here?
Your major omission seems to be a WHERE clause which compares the two revisions:
SELECT
o.ordernumber,
o.countrycode
FROM orders o
LEFT JOIN maxrevisions m
ON o.CountryCode = m.CountryCode
WHERE
o.DelivaryDateRevision < m.MaxRevision OR m.MaxRevision IS NULL;
Demo
Select
ordernumber,
countrycode,
deliverydateversion
from orders o
where deliverydateversion >
(
select max(revision)
from maxrevisiontab
where countrycode= o.countrycode
)
Please change the table names and column names as per your structure.
first is the main table and second is the lookup table.
I need to compare the column names of first table to the values in the second table and if a certain column name is found in any row of the second table then fetch some fields out of second table.
Is it possible to do it in impala?
Table 1
source |location |origin
----------+----------+-------
s1 |india |xxx
Table 2
extractedfrom|lct |lkp_value|map_value
-------------+----------+---------+---------
s1 |location |india |india_x
s1 |origin |xxx |yyyyyy
i need to have something like
final view required
source |location |origin |location_ll|origin_lkp
----------+----------+----------+-----------+----------
s1 |india |xxx |india_x |yyyyy
You should edit your post to be more specific about what you are trying to do and how you wish to join the tables.
The following query should work for you given the example you provided.
SELECT t1.source,
t1.location,
t1.origin,
t2_loc.map_value AS location_lkp,
t2_ori.map_value AS origin_lkp
FROM Table1 t1
JOIN Table2 t2_loc ON t1.source = t2_loc.extractedfrom
AND t1.location = t2_loc.lkp_value
JOIN Table2 t2_ori ON t1.source = t2_ori.extractedfrom
AND t1.origin = t2_ori.lkp_value
WHERE t2_loc.lct = 'location'
AND t2_ori.lct = 'origin'
The trick is that you join to Table2 multiple times - one for each column you wish to match upon.
I have a table pa_master_details and lov_details.
In the pa_master_details table, I have role_comp_emp_final_rating and role_comp_lm_final_rating columns.
In the lov_details table I have a column rating lov_value and lov_text_en.
I need to join role_comp_emp_final_rating with the lov_value column to get lov_text_en
Based on this lov_value, I need to show lov_text_en from the lov_details table.
So I wrote a query like this and am getting the result for emp rating:
SELECT p.employee_number,
p.role_comp_emp_final_rating,
lov_text_en,
p.role_comp_lm_final_rating
FROM pa_master_details P, lov_details L
WHERE p.role_comp_emp_final_rating = l.lov_value
AND p.employee_number = 34570
Similarly, I need to show lov_text_en for role_comp_lm_final_rating from the lov_details table by joining
role_comp_lm_final_rating with lov_value in the same query.
How do I do it?
I think this is what you're asking for:
SELECT p.employee_number,
p.role_comp_emp_final_rating,
lemp.lov_text_en AS "emp_lov_text",
llm.lov_text_en AS "lm_lov_text",
p.role_comp_lm_final_rating
FROM pa_master_details p
JOIN (SELECT lov_text FROM lov_details) lemp ON p.role_comp_emp_final_rating = lemp.lov_value
JOIN (SELECT lov_text FROM lov_details) llm ON p.role_comp_lm_final_rating = llm.lov_value
WHERE p.employee_number = 34570
I had two tables
table1 contains a list of customer and their info and there is a customer id for each one
table2 contains a list of request from all with and customer id for each request as foreign key
and i want to check the customer who has request and who is not
plz how should that be done logical is it possible to eqaul between two queries ?
thanks
You have two tables, the first with one row per customer, the other with zero to many rows per customer. So you need two techniques: one to reduce the second table to one row per customer and the other to join that result set to the first table. These techniques are an aggregating sub-query and an outer join respectively.
select c.customer_id
, nvl(r.req_count, 0) as no_of_reqs
from customer c
left outer join ( select customer_id
, count(*) as req_count
from customer_req
group by customer_id ) r
on c.customer_id = r.customer_id
I have a query like below - table names etc. changed for keeping the actual data private
SELECT inv.*,TRUNC(sysdate)
FROM Invoice inv
WHERE (inv.carrier,inv.pro,inv.ndate) IN
(
SELECT carrier,pro,n_dt FROM Order where TRUNC(Order.cr_dt) = TRUNC(sysdate)
)
I am selecting records from Invoice based on Order. i.e. all records from Invoice which are common with order records for today, based on those 3 columns...
Now I want to select Order_Num from Order in my select query as well.. so that I can use the whole thing to insert it into totally seperate table, let's say orderedInvoices.
insert into orderedInvoices(seq_no,..same columns as Inv...,Cr_dt)
(
SELECT **Order.Order_Num**, inv.*,TRUNC(sysdate)
FROM Invoice inv
WHERE (inv.carrier,inv.pro,inv.ndate) IN
(
SELECT carrier,pro,n_dt FROM Order where TRUNC(Order.cr_dt) = TRUNC(sysdate)
)
)
?? - how to do I select that Order_Num in main query for each records of that sub query?
p.s. I understand that trunc(cr_dt) will not use index on cr_dt (if a index is there..) but I couldn't select records unless I omit the time part of it..:(
If the table ORDER1 is unique on CARRIER, PRO and N_DT you can use a JOIN instead of IN to restrict your records, it'll also enable you to select whatever data you want from either table:
select order.order_num, inv.*, trunc(sysdate)
from Invoice inv
join order ord
on inv.carrier = ord.carrier
and inv.pro = ord.pro
and inv.ndate = ord.n_dt
where trunc(order.cr_dt) = trunc(sysdate)
If it's not unique then you have to use DISTINCT to deduplicate your record set.
Though using TRUNC() on CR_DT will not use an index on that column you can use a functional index on this if you do need an index.
create index i_order_trunc_cr_dt on order (trunc(cr_dt));
1. This is a really bad name for a table as it's a keyword, consider using ORDERS instead.