i am new to regx...i want to get the subquery from given query using regular expression.
For example i have query like following
Select * from (
select * from Table_A where ID = 90
UNION
select * from Table_B where ID = 90
) as SUBQUERY left join TABL_ABC abc ON (abc.id = SUBQUERY.id)
now i want my regular expression to match following lines only:
select * from Table_A where ID = 90
UNION
select * from Table_B where ID = 90
Please help me, Thank you in advance...
If it is a simple subquery without additional braces, you can just use this regexp
/\(\s*(select[^)]+)\)/i
<?php
$sql = 'Select * from ( select * from Table_A where ID = 90 UNION select * from Table_B where ID = 90 ) as SUBQUERY left join TABL_ABC abc ON (abc.id = SUBQUERY.id)';
if( preg_match('/\(\s*(select.+)\) as /iU', $sql, $matched ) ){
$subquery = trim( $matched[1] );
var_dump( $subquery );
}
Related
This Redshift query fails -
DELETE FROM TBL_1 stg
WHERE EXISTS (
WITH CCDA as (
SELECT
row_number() OVER (PARTITION BY emp_id,customer_id ORDER BY seq_num desc) rn
, *
FROM TBL_2
WHERE end_dt > (SELECT max(end_dt) FROM TBL_3)
)
SELECT emp_id,customer_id FROM CCDA WHERE rn = 1
AND stg.emp_id = CCDA.emp_id
AND stg.customer_id = CCDA.customer_id
);
Error: Invalid operation: syntax error at or near "stg"
However, the below query runs fine -
SELECT * FROM TBL_1 stg
WHERE EXISTS (
WITH CCDA as (
SELECT
row_number() OVER (PARTITION BY emp_id,customer_id ORDER BY seq_num desc) rn
, *
FROM TBL_2
WHERE end_dt > (SELECT max(end_dt) FROM TBL_3)
)
SELECT emp_id,customer_id FROM CCDA WHERE rn = 1
AND stg.emp_id = CCDA.emp_id
AND stg.customer_id = CCDA.customer_id
);
Am I missing something?
You cannot use an alias in a DELETE statement for the target table. "stg" cannot be used as the alias and this is why you are getting this error.
Also to reference other tables in a DELETE statement you need to use the USING clause.
See: https://docs.aws.amazon.com/redshift/latest/dg/r_DELETE.html
A quick stab of what this would look like (untested):
WITH CCDA as (
SELECT
row_number() OVER (PARTITION BY emp_id,customer_id ORDER BY seq_num desc) rn
, *
FROM TBL_2
WHERE end_dt > (SELECT max(end_dt) FROM TBL_3)
)
DELETE FROM TBL_1
USING CCDA
WHERE CCDA.rn = 1
AND TBL_1.emp_id = CCDA.emp_id
AND TBL_1.customer_id = CCDA.customer_id
;
I want to calculate number of group members (no_members), sum of the points of the group members(point) and average point per person(avg_point) for each group with annotation:
groups = StudyGroup.objects.filter(group_filter).select_related('parent').annotate(
no_members=Count('student', distinct=True),
point=Sum('student__point__point', filter=point_filter),
avg_point=ExpressionWrapper(F('point') / F('no_members'), output_field=FloatField()))
but when I check query (groups.query) in avg_point instead of use point/no_members query is SUM(study_league_point.point) / COUNT(DISTINCT users_student.user_id) (point and no_members calculate again). query is:
SELECT
`study_league_studygroup`.`id`,
`study_league_studygroup`.`name`,
`study_league_studygroup`.`parent_id`,
COUNT(DISTINCT `users_student`.`user_id`) AS `no_members`,
SUM(`study_league_point`.`point`) AS `point`,
(
SUM(`study_league_point`.`point`) / COUNT(DISTINCT `users_student`.`user_id`)
) AS `avg_point`,
`layers_layer`.`id`,
`layers_layer`.`name`,
`layers_layer`.`type_id`,
`layers_layer`.`parent_id`,
`layers_layer`.`created`,
`layers_layer`.`default`,
`layers_layer`.`lft`,
`layers_layer`.`rght`,
`layers_layer`.`tree_id`,
`layers_layer`.`level`
FROM
`study_league_studygroup`
LEFT OUTER JOIN `users_student` ON (
`study_league_studygroup`.`id` = `users_student`.`study_group_id`
)
LEFT OUTER JOIN `study_league_point` ON (
`users_student`.`user_id` = `study_league_point`.`student_id`
)
INNER JOIN `layers_layer` ON (
`study_league_studygroup`.`parent_id` = `layers_layer`.`id`
)
GROUP BY
`study_league_studygroup`.`id`
but I want use (point / no_members) AS avg_point instead of (SUM(study_league_point.point) / COUNT(DISTINCT users_student.user_id)) AS avg_point
Hi i have an issue i cant fix in PowerBI i dont understand DAX that mutch.
I have a half solution in DAX and an example what i have tryed.
I have the solution in SQL.
WANTED RESULT
I need to get the "time" result summed up
that have values between the two selected values.
IMPORTANT if one rows of values starts before AND after the selected values then the operation was active that time and shall be included.
#sdate = '2020'
#sdate = '2021'
Select *
From #temp
where (datepart(year,startdate) <= #sdate and datepart(year,enddate))
or (startdate between #sdate and #edate)
or (enddate between #sdate and #edate)
If i do it in SSMS i get the right rows
But in PowerBI i have some issue
I need to be able to choose två year
Year from startdate
Year from enddate
This part work but not the full solution
I just get row 3 and 4 as it sould of this solution.
UPDATED
NOW I DONT EVEN GET THIS PART RIGHT
I want all the green to include and exclude the red
Antal (under året) =
var SelectedYearStart = CONVERT(SELECTEDVALUE(TEST[startdate].[Year]), INTEGER)
var SelectedYearEnd = CONVERT(SELECTEDVALUE(TEST[enddate].[Year]), INTEGER)
return CALCULATE(SUM(TEST[time]),ALLCROSSFILTERED(TEST),year(TEST[startdate])<=SelectedYearStart , year(TEST[enddate])>=SelectedYearEnd)
My guess was this
Antal (under året) =
var SelectedYearStart = CONVERT(SELECTEDVALUE(TEST[startdate].[Year]), INTEGER)
var SelectedYearEnd = CONVERT(SELECTEDVALUE(TEST[enddate].[Year]), INTEGER)
return CALCULATE(SUM(TEST[time]),ALLCROSSFILTERED(TEST),year(TEST[startdate])<=SelectedYearStart , year(TEST[enddate])>=SelectedYearEnd || DATESBETWEEN(TEST[startdate],SelectedYearStart,SelectedYearEnd || DATESBETWEEN(TEST[enddate],SelectedYearStart,SelectedYearEnd)))
But then i get this error
TEST DATA
declare #sdate nvarchar(4)
declare #edate nvarchar(4)
set #sdate = '2020'
set #edate = '2021'
select #sdate sdate
select #edate edate
DEclare #temp table (time decimal(18,2) , startdate date, enddate date)
INSERT INTO #temp
SELECT 5.0,'2019-01-01','2020-12-01' union all --
SELECT 5.0,'2021-01-01','2022-12-01' union all --
select 5.0,'2020-01-01','2021-12-01' union all
select 5.0,'2019-01-01','2022-12-01' union all --
select 5.0,'2019-01-01','2019-12-01' union all --
select 5.0,'2022-01-01','2022-12-01' union all
select 5.0,'2020-01-01','2020-12-01' union all
select 5.0,'2021-01-01','2021-12-01'
--select 5.0,'2020-01-01','3000-01-01' --EXTRA
SELECT *
into TEST
FROM #temp
--ORDER BY startdate,enddate
You need something like this:
var SelectedYearStart = SELECTEDVALUE(TEST[startdate].[Year])
var SelectedYearEnd = SELECTEDVALUE(TEST[enddate].[Year])
return CALCULATE(SUM(TEST[time]),
ALL ( TEST[startdate].[Year]),
ALL ( TEST[enddate].[Year]),
KEEPFILTERS(
(Year(TEST[startdate]) <= SelectedYearStart &&
Year(TEST[enddate]) >= SelectedYearEnd)
|| (Year(TEST[startdate]) >= SelectedYearStart &&
Year(TEST[startdate]) <= SelectedYearEnd)
|| (Year(TEST[enddate]) >= SelectedYearStart &&
Year(TEST[enddate]) <= SelectedYearEnd))
)
First you need to clear the filters on the table that are created via the two slicers (startdate.Year and enddate.Year)
Then you need to pass in your complex filter query. Note that I'm using the Year(..) function because you can't reference columns from different tables in the filter section of the Calculate (and startdate.year and enddate.year are coming from two separate date tables created automatically by powerbi).
Finally you need to wrap that into a KEEPFILTERS statement to ensure that only the current row context is being applied to the expression.
I am trying to convert this redshift query to athena.
select
a.customerid,
a.country,
a.stockcode,
a.description,
a.invoicedate,
a.sales_amt,
(b.nbr_months_active) as nbr_months_active
from
ecommerce_sales_data a
inner join (
select
customerid,
count(
distinct(
DATE_PART(y, cast(invoicedate as date)) || '-' || LPAD(
DATE_PART(mon, cast(invoicedate as date)),
2,
'00'
)
)
) as nbr_months_active
from
ecommerce_sales_data
group by
1
) b on a.customerid = b.customerid
This is what I have tried. It returns the results. But I am not sure if the results will match with redshift query in all cases.
WITH students_results(InvoiceNo,StockCode,Description,Quantity,InvoiceDate,UnitPrice,CustomerID,Country) AS (VALUES
('536365','85123A','WHITE HANGING HEART T-LIGHT HOLDER','6','12/1/2010 8:26','2.55','17850','United Kingdom'),
('536365','71053','WHITE METAL LANTERN','6','12/1/2010 8:26','3.39','17850','United Kingdom'),
('536365','84406B','CREAM CUPID HEARTS COAT HANGER','8','12/1/2010 8:26','2.75','17850','United Kingdom')
)
select
a.customerid,
a.country,
a.stockcode,
a.description,
a.invoicedate,
cast(a.quantity as decimal(11,2)) * cast(a.unitprice as decimal(11,2)) as sales_amt,
(b.nbr_months_active) as nbr_months_active
from
students_results a
inner join (
select
customerid,
count(
distinct(
date_format(date_parse(invoicedate,'%m/%d/%Y %k:%i'), '%Y-%m')
)) as nbr_months_active
FROM students_results group by customerid) as b
on a.customerid = b.customerid
The source of Redshift query is here:
https://aws.amazon.com/blogs/machine-learning/build-multi-class-classification-models-with-amazon-redshift-ml/
How do I do this in doctrine2 QB or DQL.
SELECT * FROM
(
select * from my_table order by timestamp desc
) as my_table_tmp
group by catid
order by nid desc
I think your query is the same as:
SELECT *
FROM my_table
GROUP BY catid
HAVING timestamp = MAX(timestamp)
ORDER BY nid DESC
;
If it is correct, then you should be able to do:
$qb->select('e')
->from('My\Entities\Table', 'e')
->groupBy('e.catid')
->having('e.timestamp = MAX(e.timestamp)')
->orderBy('nid', 'DESC')
;
Or, directly using DQL:
SELECT e
FROM My\Entities\Table e
GROUP BY e.catid
HAVING e.timestamp = MAX(e.timestamp)
ORDER BY e.nid DESC
;
Hope this helps and works! ;)