I have a strange issue in Oracle I never seen before....
I have the following insert select statement
insert into table2
(
key_field,value
)
SELECT
key_field, CASE WHEN type ='S' THEN 100 ELSE 1 END
FROM view1
WHERE key_field=1
When I run just the SELECT part then I get 100 for the second field,
however if I run the insert select statement the I get 1 in table2 .
If I include the field type on the insert, the I get the 100
If I use "CASE WHEN type like 'S' THEN 100 ELSE 1 END" Then I get 100 in table2 (correct answer)
Anyone has any idea why the first select insert statement is not working?
Thank you!
Related
What is the correct behavior of the last and last_value functions in Apache Spark/Databricks SQL. The way I'm reading the documentation (here: https://docs.databricks.com/spark/2.x/spark-sql/language-manual/functions.html) it sounds like it should return the last value of what ever is in the expression.
So if I have a select statement that does something like
select
person,
last(team)
from
(select * from person_team order by date_joined)
group by person
I should get the last team a person joined, yes/no?
The actual query I'm running is shown below. It is returning a different number each time I execute the query.
select count(distinct patient_id) from (
select
patient_id,
org_patient_id,
last_value(data_lot) data_lot
from
(select * from my_table order by data_lot)
where 1=1
and org = 'my_org'
group by 1,2
order by 1,2
)
where data_lot in ('2021-01','2021-02')
;
What is the correct way to get the last value for a given field (for either the team example or my specific example)?
--- EDIT -------------------
I'm thinking collect_set might be useful here, but I get the error shown when I try to run this:
select
patient_id,
last_value(collect_set(data_lot)) data_lot
from
covid.demo
group by patient_id
;
Error in SQL statement: AnalysisException: It is not allowed to use an aggregate function in the argument of another aggregate function. Please use the inner aggregate function in a sub-query.;;
Aggregate [patient_id#89338], [patient_id#89338, last_value(collect_set(data_lot#89342, 0, 0), false) AS data_lot#91848]
+- SubqueryAlias spark_catalog.covid.demo
The posts shown below discusses how to get max values (not the same as last in a list ordered by a different field, I want the last team a player joined, the player may have joined the Reds, the A's, the Zebras, and the Yankees, in that order timewise, I'm looking for the Yankees) and these posts get to the solution procedurally using python/r. I'd like to do this in SQL.
Getting last value of group in Spark
Find maximum row per group in Spark DataFrame
--- SECOND EDIT -------------------
I ended up using something like this based upon the accepted answer.
select
row_number() over (order by provided_date, data_lot) as row_num,
demo.*
from demo
You can assign row numbers based on an ordering on data_lots if you want to get its last value:
select count(distinct patient_id) from (
select * from (
select *,
row_number() over (partition by patient_id, org_patient_id, org order by data_lots desc) as rn
from my_table
where org = 'my_org'
)
where rn = 1
)
where data_lot in ('2021-01','2021-02');
In Sqlite we have table1 with column column1
there are 4 rows with following values for column1
(p1,p10,p11,p20)
DROP TABLE IF EXISTS table1;
CREATE TABLE table1(column1 NVARCHAR);
INSERT INTO table1 (column1) values ('p1'),('p10'),('p11'),('p20');
Select instr(',p112,p108,p124,p204,p11,p1124,p1,p10,p20,',','+column1+',') from table1;
We have to get the position of each value of column1 in the given string:
,p112,p108,p124,p204,p11,p1124,p1,p10,p20,
the query
Select instr(',p112,p108,p124,p204,p11,p1124,p1,p10,p20,',column1) from table1;
returns values
(2,7,2,17)
which is not what we want
the query
Select instr(',p112,p108,p124,p204,p11,p1124,p1,p10,p20,',','+column1+',') from table1;
returns 9 for all rows -
it turned out that it is the position of first "0" symbol ???
Howe we can get the exact positions of column1 in the given string in sqlite ??
In SQLite the concatenation operator is || and not + (like SQL Server), so do this:
Select instr(',p112,p108,p124,p204,p11,p1124,p1,p10,p20,',',' || column1 || ',') from table1;
What you did with your code was number addition which resulted to 0, because none of the string operands could succesfully be converted to number,
so instr() was searching for '0' and found it always at position 9 of the string:',p112,p108,p124,p204,p11,p1124,p1,p10,p20,'.
I am trying to write a CASE statement in which I need to run the subquery to check whether the record is available in access table. If the person has access then score should anything between 0 to 100 which is taken care by coalesce and if not then the value should be NULL. But the query is failing with the error saying, Missing column Assignment for 'id'.
My query:
SELECT
CASE
WHEN EXISTS (SELECT * FROM hive_dsn.db.access AS aa WHERE ub.id=aa.id)
THEN COALESCE(ub.score*100,0)
ELSE
NULL
END AS UNUSED
FROM hive_dsn.db.unused_output AS ub;
Basically, I did not understand the error statement. What this error is saying and how can I resolve this.
Thanks in Advance.
I figured out that the where condition is checking on columns rather than values without any JOIN.
I rewrote query like follows:
SELECT
CASE
WHEN EXISTS (SELECT ub.personid FROM hive_dsn.db.access AS aa
JOIN hive_dsn.db.unused_output AS ub ON ub.id=aa.id)
THEN COALESCE(ub.score*100,0)
ELSE NULL
END AS UNUSED
from hive_dsn.db.unusedoutput AS ub;
This JOIN condition resolved the issue.
Instead of co related sub query this can be achieved using join.
this is sample ...
SELECT
CASE
WHEN aa.id is null then null
else THEN COALESCE(ub.score*100,0)
END AS UNUSED
FROM hive_dsn.db.unused_output AS ub
left join hive_dsn.db.access AS aa
on ub.id=aa.id ;
Note: If there is 1:n relation ship in tables then use distinct in select statement.
Currently I´m doing this (get pagination and count), in Informix:
select a.*, b.total from (select skip 0 first 10 * from TABLE) a,(select count(*) total from TABLE) b
The problem is that I´m repeating the same pattern - I get the first ten results from all and then I count all the results.
I want to make something like this:
select *, count(*) from TABLE:
so I can make my query much faster. It is possible?
I'm trying to retrieve rows from a table where a subquery matches an variable. However, it seems as if the WHERE clause only lets me compare fields of the selected tables against a constant, variable or subquery.
I would expect to write something like this:
DATA(lv_expected_lines) = 5.
SELECT partner contract_account
INTO TABLE lt_bp_ca
FROM table1 AS tab1
WHERE lv_expected_lines = (
SELECT COUNT(*)
FROM table2
WHERE partner = tab1~partner
AND contract_account = tab1~contract_account ).
But obviously this select treats my local variable as a field name and it gives me the error "Unknown column name "lv_expected_lines" until runtime, you cannot specify a field list."
But in standard SQL this is perfectly possible:
SELECT PARTNER, CONTRACT_ACCOUNT
FROM TABLE1 AS TAB1
WHERE 5 = (
SELECT COUNT(*)
FROM TABLE2
WHERE PARTNER = TAB1.PARTNER
AND CONTRACT_ACCOUNT = TAB1.CONTRACT_ACCOUNT );
So how can I replicate this logic in RSQL / Open SQL?
If there's no way I'll probably just write native SQL and be done with it.
The program below might lead you to an Open SQL solution. It uses the SAP demo tables to determines the plane types that are used on a specific number of flights.
REPORT zgertest_sub_query.
DATA: lt_planetypes TYPE STANDARD TABLE OF s_planetpp.
PARAMETERS: p_numf TYPE i DEFAULT 62.
START-OF-SELECTION.
SELECT planetype
INTO TABLE lt_planetypes
FROM sflight
GROUP BY planetype
HAVING COUNT( * ) EQ p_numf.
LOOP AT lt_planetypes INTO DATA(planetype).
WRITE: / planetype.
ENDLOOP.
It only works if you don't need to read fields from TAB1. If you do you will have to gather these with other selects while looping at your results.
For those dudes who found this question in 2020 I report that this construction is supported since ABAP 7.50. No workarounds are needed:
SELECT kunnr, vkorg
FROM vbak AS v
WHERE 5 = ( SELECT COUNT(*)
FROM vbap
WHERE kunnr = v~kunnr
AND vkorg = v~vkorg )
INTO TABLE #DATA(customers).
This select all customers who made 5 sales orders within some sales organization.
In ABAP there is no way to do the query as in NATIVE SQL.
I would advice not to use NATIVE SQL, instead give a try to SELECT/ENDSELECT statement.
DATA: ls_table1 type table1,
lt_table1 type table of table1,
lv_count type i.
SELECT PARTNER, CONTRACT_ACCOUNT
INTO ls_table1
FROM TABLE1.
SELECT COUNT(*)
INTO lv_count
FROM TABLE2
WHERE PARTNER = TAB1.PARTNER
AND CONTRACT_ACCOUNT = TAB1.CONTRACT_ACCOUNT.
CHECK lv_count EQ 5.
APPEND ls_table1 TO lt_table1.
ENDSELECT
Here you append to ls_table1 only those rows where count is equals to 5 in selection of table2.
Hope it helps.