How do you pass an outer selects row variable to inner select in oracle, here is a sample query ( other outer joins has been removed. This query will be loaded 1 time in life time of an application). This query works
select l5.HIERARCHY_ID,
(select wm_concat(isbn) isbns from (
select op.isbn from oproduct op
LEFT JOIN assignment ha on op.r.reference = ha.reference
where ha.hierarchy_id = '100589'))isbns
from level l5 where l5.gid = '1007500000078694'
but when I change the inner select's where clause
where ha.hierarchy_id = '100589'))isbns
to
where ha.hierarchy_id = l5.HIERARCHY_ID))isbns
I get the following error
ORA-00904: "L5"."HIERARCHY_ID": invalid identifier
You cannot pass the value of a 2nd level SELECT.
For example -
SELECT value1 -- 1st level select
FROM (
SELECT value2 -- 2nd level select
FROM (
SELECT value3 -- 3rd level select.
You can have values from the 1st level SELECT available for only the second level SELECT.
Similarly the values in the second level SELECT are only available to the 1st level SELECT and the 3rd level SELECT not beyond that.
I did something like this to fix the problem. There was one unnecessary select
select
l5.HIERARCHY_ID,
(
select
wm_concat(op.isbn)
from
oproduct op
LEFT JOIN assignment ha on op.r.reference = ha.reference
where ha.hierarchy_id = l5.HIERARCHY_ID
) ISBNS
from
level l5
where
l5.gid = '1007500000078694'
I think I am reading your SQL correctly - you want an outer join when the hierarchy ids match?
SELECT
l5.hierarchy_id,
op.isbns
FROM
LEVEL l5
LEFT OUTER JOIN
(SELECT
wm_concat (op.isbn) isbns,
ha.hierarch_id
FROM
oproduct op
LEFT JOIN
assignment ha
ON op.reference = ha.reference) op
ON l5.gid = op.hierarchy_id
Related
I am trying to extract a dataset which joins 3 tables
Employee E
AbsenceTypes AT
AbsenceBalance AB
In the data set I need the most recent record from AB.BalanceTime for each AB.EmployeeUID by AB.AbsenceTypesUID.
The data set is correct with the output I need, where it fails is when I query the CTE.
;WITH cte AS
(
SELECT TOP (1000)
AB.[UID],
AB.BalanceTime,
AB.AbsenceTypesUID,
AB.Mins,
E.FullName,
E.FirstName, E.LastName,
AB.EmployeeUID,
AT.LongName,
ROW_NUMBER() OVER(PARTITION BY AB.[UID], AB.EmployeeUID ORDER BY AB.BalanceTime DESC) AS RUN
FROM
[RiteqDB].[dbo].[AbsenceBalance] AB
LEFT JOIN
[RiteqDB].[dbo].Employee E ON AB.EmployeeUID = E.UID
LEFT JOIN
[RiteqDB].[dbo].AbsenceTypes AT ON AB.AbsenceTypesUID = AT.UID
)
SELECT *
FROM cte
WHERE RUN = 1 AND E.FullName = 'john citizen'
Error
Msg 4104, Level 16, State 1, Line 45
The multi-part identifier "E.FullName" could not be bound.
I have googled the problem & from what I understand the joined tables do not interact with the CTE which is why it fails with the condition below.
AND E.FullName = 'john citizen'
How can I alter the script so I can query the table?
Table alias E is defined inside the CTE only, not in the outer query. In that scope, there is only one (derived) table, that is called cte, and that has all column names that the CTE returns.
In other words, you can just do:
with cte as (...)
select *
from cte
where run = 1 and fullname = 'john citizen'
If you really want to use aliases, then alias the CTE, and then:
with cte as (...)
select c.*
from cte c
where c.run = 1 and c.fullname = 'john citizen'
Having trouble converting Oracle syntax to T-SQL. Trying to convert the following statement:
SELECT ORIG.*
,V.COUNTRY_COMMON_NAME
FROM
(SELECT O.*
,LC.LOCAL_COUNCIL
,LC.REGIONAL_COUNCIL
FROM ES_W_ORG_DIM_INIT O
LEFT JOIN ES_W_ORG_DIM_INIT CNTR ON (O.RSC_CNTR_ORG_ID = CNTR.ORG_ID)
LEFT JOIN ES_W_LCL_CNCL_BASE LC ON (TO_CHAR(O.STK_DIST_UNIT_NUMBER) =
TRIM(LC.UNITNUMBER))
WHERE O.ORG_TYPE_ID IN (7,8)
UNION
SELECT O.*
,LC.LOCAL_COUNCIL
,LC.REGIONAL_COUNCIL
FROM ES_W_ORG_DIM_INIT O
LEFT JOIN ES_W_ORG_DIM_INIT CNTR ON (O.RSC_CNTR_ORG_ID = CNTR.ORG_ID)
LEFT JOIN ES_W_LCL_CNCL_BASE LC ON (TO_CHAR(O.UNIT_NUMBER) =
TRIM(LC.UNITNUMBER))
WHERE O.ORG_TYPE_ID IN (5,6)
UNION
SELECT O.*
,NULL AS LOCAL_COUNTCIL
,NULL AS REGIONAL_COUNCIL
FROM ES_W_ORG_DIM_INIT O
WHERE O.ORG_TYPE_ID IN (60,61)
) ORIG
LEFT JOIN DW_ERSDB_ORG_ADDR_VW V ON (ORIG.ORG_ID = V.ORG_ID AND
V.ORG_ADDRESS_TYPE_ID = 1)
Attempted conversion:
WITH ORIG AS(
SELECT O.*
,LC.LOCAL_COUNCIL
,LC.REGIONAL_COUNCIL
FROM DSS_ERS_STAGE.ES_ORG_DIM O
LEFT JOIN DSS_ERS_STAGE.ES_ORG_DIM CNTR ON (O.RSC_CNTR_ORG_ID = CNTR.ORG_ID)
LEFT JOIN DSS_ERS_STAGE.ES_W_LCL_CNCL_BASE LC ON (CONVERT(VARCHAR,
O.STK_DIST_UNIT_NUMBER) = RTRIM(LTRIM(LC.UNITNUMBER)))
WHERE O.ORG_TYPE_ID IN (7,8)
UNION
(SELECT O.*
,LC.LOCAL_COUNCIL
,LC.REGIONAL_COUNCIL
FROM DSS_ERS_STAGE.ES_ORG_DIM O
LEFT JOIN DSS_ERS_STAGE.ES_ORG_DIM CNTR ON (O.RSC_CNTR_ORG_ID = CNTR.ORG_ID)
LEFT JOIN DSS_ERS_STAGE.ES_W_LCL_CNCL_BASE LC ON (CONVERT(VARCHAR,
O.UNIT_NUMBER) = RTRIM(LTRIM(LC.UNITNUMBER)))
WHERE O.ORG_TYPE_ID IN (5,6)
UNION
SELECT O.*
,NULL AS LOCAL_COUNCIL
,NULL AS REGIONAL_COUNCIL
FROM DSS_ERS_STAGE.ES_ORG_DIM O
WHERE O.ORG_TYPE_ID IN (60,61)
))
SELECT ORIG.*, V.COUNTRY_COMMON_NAME
FROM ORIG
LEFT JOIN DSS_ERS_STAGE.DW_ERSDB_ORG_ADDR_VW V ON (ORIG.ORG_ID = V.ORG_ID
AND
V.ORG_ADDRESS_TYPE_ID = 1)
*Just a note that the schemas specified are required in the target database
SQL Server error:
Msg 8156, Level 16, State 1, Line 1
The column 'LOCAL_COUNCIL' was specified multiple times for 'ORIG'.
Any ideas on how I can engineer this to make it work in SQL Server?
Jamie mentioned this in a comment but I'll try to explain in a bit more detail. For purposes of illustration, suppose I have the following two very simple tables.
create table CouncilA (LOCAL_COUNCIL int);
create table CouncilB (LOCAL_COUNCIL int);
insert CouncilA values (1);
insert CouncilB values (1);
SQL Server does allow you to query a result set that has non-unique column names. For instance, the following is legal:
select *
from
CouncilA A
inner join CouncilB B on A.LOCAL_COUNCIL = B.LOCAL_COUNCIL;
It produces the following result set:
LOCAL_COUNCIL LOCAL_COUNCIL
1 1
However, the documentation for common table expressions explicitly states:
Duplicate names within a single CTE definition are not allowed.
So if I try to wrap my earlier query like this, as you've done in your attempted conversion:
with CTE as
(
select *
from
CouncilA A
inner join CouncilB B on A.LOCAL_COUNCIL = B.LOCAL_COUNCIL
)
select * from CTE;
Then I get the error message that you're seeing:
Msg 8156, Level 16, State 1, Line 7
The column 'LOCAL_COUNCIL' was specified multiple times for 'CTE'.
Incidentally, the same is true for a sub-SELECT:
select * from
(
select *
from
CouncilA A
inner join CouncilB B on A.LOCAL_COUNCIL = B.LOCAL_COUNCIL
) X;
Result:
Msg 8156, Level 16, State 1, Line 13
The column 'LOCAL_COUNCIL' was specified multiple times for 'X'.
The error message you see refers to ORIG, which is the name of your CTE, so the definition of that CTE has multiple columns called LOCAL_COUNCIL, which presumably means that your ES_W_ORG_DIM_INIT table has a column called LOCAL_COUNCIL. Make sure your column names are unique within your CTE and you should be okay.
I have a simple SQL table containing some values, for example:
id | value (table 'values')
----------
0 | 4
1 | 7
2 | 9
I want to iterate over these values, and use them in a query like so:
SELECT value[0], x1
FROM (some subquery where value[0] is used)
UNION
SELECT value[1], x2
FROM (some subquery where value[1] is used)
...
etc
In order to get a result set like this:
4 | x1
7 | x2
9 | x3
It has to be in SQL as it will actually represent a database view. Of course the real query is a lot more complicated, but I tried to simplify the question while keeping the essence as much as possible.
I think I have to select from values and join the subquery, but as the value should be used in the subquery I'm lost on how to accomplish this.
Edit: I oversimplified my question; in reality I want to have 2 rows from the subquery and not only one.
Edit 2: As suggested I'm posting the real query. I simplified it a bit to make it clearer, but it's a working query and the problem is there. Note that I have hardcoded the value '2' in this query two times. I want to replace that with values from a different table, in the example table above I would want a result set of the combined results of this query with 4, 7 and 9 as values instead of the currently hardcoded 2.
SELECT x.fantasycoach_id, SUM(round_points)
FROM (
SELECT DISTINCT fc.id AS fantasycoach_id,
ffv.formation_id AS formation_id,
fpc.round_sequence AS round_sequence,
round_points,
fpc.fantasyplayer_id
FROM fantasyworld_FantasyCoach AS fc
LEFT JOIN fantasyworld_fantasyformation AS ff ON ff.id = (
SELECT MAX(fantasyworld_fantasyformationvalidity.formation_id)
FROM fantasyworld_fantasyformationvalidity
LEFT JOIN realworld_round AS _rr ON _rr.id = round_id
LEFT JOIN fantasyworld_fantasyformation AS _ff ON _ff.id = formation_id
WHERE is_valid = TRUE
AND _ff.coach_id = fc.id
AND _rr.sequence <= 2 /* HARDCODED USE OF VALUE */
)
LEFT JOIN fantasyworld_FantasyFormationPlayer AS ffp
ON ffp.formation_id = ff.id
LEFT JOIN dbcache_fantasyplayercache AS fpc
ON ffp.player_id = fpc.fantasyplayer_id
AND fpc.round_sequence = 2 /* HARDCODED USE OF VALUE */
LEFT JOIN fantasyworld_fantasyformationvalidity AS ffv
ON ffv.formation_id = ff.id
) x
GROUP BY fantasycoach_id
Edit 3: I'm using PostgreSQL.
SQL works with tables as a whole, which basically involves set operations. There is no explicit iteration, and generally no need for any. In particular, the most straightforward implementation of what you described would be this:
SELECT value, (some subquery where value is used) AS x
FROM values
Do note, however, that a correlated subquery such as that is very hard on query performance. Depending on the details of what you're trying to do, it may well be possible to structure it around a simple join, an uncorrelated subquery, or a similar, better-performing alternative.
Update:
In view of the update to the question indicating that the subquery is expected to yield multiple rows for each value in table values, contrary to the example results, it seems a better approach would be to just rewrite the subquery as the main query. If it does not already do so (and maybe even if it does) then it would join table values as another base table.
Update 2:
Given the real query now presented, this is how the values from table values could be incorporated into it:
SELECT x.fantasycoach_id, SUM(round_points) FROM
(
SELECT DISTINCT
fc.id AS fantasycoach_id,
ffv.formation_id AS formation_id,
fpc.round_sequence AS round_sequence,
round_points,
fpc.fantasyplayer_id
FROM fantasyworld_FantasyCoach AS fc
-- one row for each combination of coach and value:
CROSS JOIN values
LEFT JOIN fantasyworld_fantasyformation AS ff
ON ff.id = (
SELECT MAX(fantasyworld_fantasyformationvalidity.formation_id)
FROM fantasyworld_fantasyformationvalidity
LEFT JOIN realworld_round AS _rr
ON _rr.id = round_id
LEFT JOIN fantasyworld_fantasyformation AS _ff
ON _ff.id = formation_id
WHERE is_valid = TRUE
AND _ff.coach_id = fc.id
-- use the value obtained from values:
AND _rr.sequence <= values.value
)
LEFT JOIN fantasyworld_FantasyFormationPlayer AS ffp
ON ffp.formation_id = ff.id
LEFT JOIN dbcache_fantasyplayercache AS fpc
ON ffp.player_id = fpc.fantasyplayer_id
-- use the value obtained from values again:
AND fpc.round_sequence = values.value
LEFT JOIN fantasyworld_fantasyformationvalidity AS ffv
ON ffv.formation_id = ff.id
) x
GROUP BY fantasycoach_id
Note in particular the CROSS JOIN which forms the cross product of two tables; this is the same thing as an INNER JOIN without any join predicate, and it can be written that way if desired.
The overall query could be at least a bit simplified, but I do not do so because it is a working example rather than an actual production query, so it is unclear what other changes would translate to the actual application.
In the example I create two tables. See how outer table have an alias you use in the inner select?
SQL Fiddle Demo
SELECT T.[value], (SELECT [property] FROM Table2 P WHERE P.[value] = T.[value])
FROM Table1 T
This is a better way for performance
SELECT T.[value], P.[property]
FROM Table1 T
INNER JOIN Table2 p
on P.[value] = T.[value];
Table 2 can be a QUERY instead of a real table
Third Option
Using a cte to calculate your values and then join back to the main table. This way you have the subquery logic separated from your final query.
WITH cte AS (
SELECT
T.[value],
T.[value] * T.[value] as property
FROM Table1 T
)
SELECT T.[value], C.[property]
FROM Table1 T
INNER JOIN cte C
on T.[value] = C.[value];
It might be helpful to extract the computation to a function that is called in the SELECT clause and is executed for each row of the result set
Here's the documentation for CREATE FUNCTION for SQL Server. It's probably similar to whatever database system you're using, and if not you can easily Google for it.
Here's an example of creating a function and using it in a query:
CREATE FUNCTION DoComputation(#parameter1 int)
RETURNS int
AS
BEGIN
-- Do some calculations here and return the function result.
-- This example returns the value of #parameter1 squared.
-- You can add additional parameters to the function definition if needed
DECLARE #Result int
SET #Result = #parameter1 * #parameter1
RETURN #Result
END
Here is an example of using the example function above in a query.
SELECT v.value, DoComputation(v.value) as ComputedValue
FROM [Values] v
ORDER BY value
I have two statements that I want to merge into one output.
Statement One:
select name from auxiliary_variable_inquiry
where inquiry_idbr_code = '063'
Returns the following list of names:
Name
------------
Affiliates
NetBookValue
Parents
Worldbase
Statement Two:
select name, value from auxiliary_variable_value
where inquiry_idbr_code = '063'
and ru_ref = 20120000008
and period = 200912
Returns the following:
Name Value
-------------------
Affiliates 112
NetBookValue 225.700
I would like to have an output like this:
Name Value
-------------------
Affiliates 112
NetBookValue 225.700
Parents 0
Worldbase 0
So basically, if the second query only returns 2 names and values, I'd still like to display the complete set of names from the first query, with no values. If all four values were returned by both queries, then all four would be displayed.
Sorry I must add, im using Ingres SQL so im unable to use the ISNULL function.
You can do a left join. This ensures that all records from the first table will stay included. Where value is null, no child record was found, and we use coalesce to display 0 in these cases.
select i.name, COALESCE(v.Value,0) from auxiliary_variable_inquiry i
left join auxiliary_variable_value v
on v.inquiry_idbr_code = i.inquiry_idbr_code
and v.ru_ref = 20120000008
and v.period = 200912
where i.inquiry_idbr_code = '063'
I'd recommend a self-JOIN using the LEFT OUTER JOIN syntax. Include your 'extra' conditions from the second query in the JOIN condition, while the first conditions stay in the WHERE, like this:
select a.name, CASE WHEN b.Value IS NULL THEN 0 ELSE b.Value END AS Value
from
auxiliary_variable_inquiry a
LEFT JOIN
auxiliary_variable_inquiry b ON
a.name = b.name and -- replace this with your real ID-based JOIN
a.inquiry_idbr_code = b.inquiry_idbr_code AND
b.ru_ref = 20120000008 AND
b.period = 200912
where a.inquiry_idbr_code = '063'
if i got right, you should use something like:
SELECT i.NAME,
v.NAME,
v.value
FROM auxiliary_variable_inquiry i
LEFT JOIN auxiliary_variable_value v
ON i.inquiry_idbr_code = v.inquiry_idbr_code
WHERE v.ru_ref = 20120000008
AND v.period = 200912
I have the following query:
SELECT sum((select count(*) as itemCount) * "SalesOrderItems"."price") as amount, 'rma' as
"creditType", "Clients"."company" as "client", "Clients".id as "ClientId", "Rmas".*
FROM "Rmas" JOIN "EsnsRmas" on("EsnsRmas"."RmaId" = "Rmas"."id")
JOIN "Esns" on ("Esns".id = "EsnsRmas"."EsnId")
JOIN "EsnsSalesOrderItems" on("EsnsSalesOrderItems"."EsnId" = "Esns"."id" )
JOIN "SalesOrderItems" on("SalesOrderItems"."id" = "EsnsSalesOrderItems"."SalesOrderItemId")
JOIN "Clients" on("Clients"."id" = "Rmas"."ClientId" )
WHERE "Rmas"."credited"=false AND "Rmas"."verifyStatus" IS NOT null
GROUP BY "Clients".id, "Rmas".id;
The problem is that the table "EsnsSalesOrderItems" can have the same EsnId in different entries. I want to restrict the query to only pull the last entry in "EsnsSalesOrderItems" that has the same "EsnId".
By "last" entry I mean the following:
The one that appears last in the table "EsnsSalesOrderItems". So for example if "EsnsSalesOrderItems" has two entries with "EsnId" = 6 and "createdAt" = '2012-06-19' and '2012-07-19' respectively it should only give me the entry from '2012-07-19'.
SELECT (count(*) * sum(s."price")) AS amount
, 'rma' AS "creditType"
, c."company" AS "client"
, c.id AS "ClientId"
, r.*
FROM "Rmas" r
JOIN "EsnsRmas" er ON er."RmaId" = r."id"
JOIN "Esns" e ON e.id = er."EsnId"
JOIN (
SELECT DISTINCT ON ("EsnId") *
FROM "EsnsSalesOrderItems"
ORDER BY "EsnId", "createdAt" DESC
) es ON es."EsnId" = e."id"
JOIN "SalesOrderItems" s ON s."id" = es."SalesOrderItemId"
JOIN "Clients" c ON c."id" = r."ClientId"
WHERE r."credited" = FALSE
AND r."verifyStatus" IS NOT NULL
GROUP BY c.id, r.id;
Your query in the question has an illegal aggregate over another aggregate:
sum((select count(*) as itemCount) * "SalesOrderItems"."price") as amount
Simplified and converted to legal syntax:
(count(*) * sum(s."price")) AS amount
But do you really want to multiply with the count per group?
I retrieve the the single row per group in "EsnsSalesOrderItems" with DISTINCT ON. Detailed explanation:
Select first row in each GROUP BY group?
I also added table aliases and formatting to make the query easier to parse for human eyes. If you could avoid camel case you could get rid of all the double quotes clouding the view.
Something like:
join (
select "EsnId",
row_number() over (partition by "EsnId" order by "createdAt" desc) as rn
from "EsnsSalesOrderItems"
) t ON t."EsnId" = "Esns"."id" and rn = 1
this will select the latest "EsnId" from "EsnsSalesOrderItems" based on the column creation_date. As you didn't post the structure of your tables, I had to "invent" a column name. You can use any column that allows you to define an order on the rows that suits you.
But remember the concept of the "last row" is only valid if you specifiy an order or the rows. A table as such is not ordered, nor is the result of a query unless you specify an order by
Necromancing because the answers are outdated.
Take advantage of the LATERAL keyword introduced in PG 9.3
left | right | inner JOIN LATERAL
I'll explain with an example:
Assuming you have a table "Contacts".
Now contacts have organisational units.
They can have one OU at a point in time, but N OUs at N points in time.
Now, if you have to query contacts and OU in a time period (not a reporting date, but a date range), you could N-fold increase the record count if you just did a left join.
So, to display the OU, you need to just join the first OU for each contact (where what shall be first is an arbitrary criterion - when taking the last value, for example, that is just another way of saying the first value when sorted by descending date order).
In SQL-server, you would use cross-apply (or rather OUTER APPLY since we need a left join), which will invoke a table-valued function on each row it has to join.
SELECT * FROM T_Contacts
--LEFT JOIN T_MAP_Contacts_Ref_OrganisationalUnit ON MAP_CTCOU_CT_UID = T_Contacts.CT_UID AND MAP_CTCOU_SoftDeleteStatus = 1
--WHERE T_MAP_Contacts_Ref_OrganisationalUnit.MAP_CTCOU_UID IS NULL -- 989
-- CROSS APPLY -- = INNER JOIN
OUTER APPLY -- = LEFT JOIN
(
SELECT TOP 1
--MAP_CTCOU_UID
MAP_CTCOU_CT_UID
,MAP_CTCOU_COU_UID
,MAP_CTCOU_DateFrom
,MAP_CTCOU_DateTo
FROM T_MAP_Contacts_Ref_OrganisationalUnit
WHERE MAP_CTCOU_SoftDeleteStatus = 1
AND MAP_CTCOU_CT_UID = T_Contacts.CT_UID
/*
AND
(
(#in_DateFrom <= T_MAP_Contacts_Ref_OrganisationalUnit.MAP_KTKOE_DateTo)
AND
(#in_DateTo >= T_MAP_Contacts_Ref_OrganisationalUnit.MAP_KTKOE_DateFrom)
)
*/
ORDER BY MAP_CTCOU_DateFrom
) AS FirstOE
In PostgreSQL, starting from version 9.3, you can do that, too - just use the LATERAL keyword to achieve the same:
SELECT * FROM T_Contacts
--LEFT JOIN T_MAP_Contacts_Ref_OrganisationalUnit ON MAP_CTCOU_CT_UID = T_Contacts.CT_UID AND MAP_CTCOU_SoftDeleteStatus = 1
--WHERE T_MAP_Contacts_Ref_OrganisationalUnit.MAP_CTCOU_UID IS NULL -- 989
LEFT JOIN LATERAL
(
SELECT
--MAP_CTCOU_UID
MAP_CTCOU_CT_UID
,MAP_CTCOU_COU_UID
,MAP_CTCOU_DateFrom
,MAP_CTCOU_DateTo
FROM T_MAP_Contacts_Ref_OrganisationalUnit
WHERE MAP_CTCOU_SoftDeleteStatus = 1
AND MAP_CTCOU_CT_UID = T_Contacts.CT_UID
/*
AND
(
(__in_DateFrom <= T_MAP_Contacts_Ref_OrganisationalUnit.MAP_KTKOE_DateTo)
AND
(__in_DateTo >= T_MAP_Contacts_Ref_OrganisationalUnit.MAP_KTKOE_DateFrom)
)
*/
ORDER BY MAP_CTCOU_DateFrom
LIMIT 1
) AS FirstOE
Try using a subquery in your ON clause. An abstract example:
SELECT
*
FROM table1
JOIN table2 ON table2.id = (
SELECT id FROM table2 WHERE table2.table1_id = table1.id LIMIT 1
)
WHERE
...