I'm trying to use row values from CTE expressions to pass to a function.
Something like:
WITH
start_number(x) as (VALUES(1)),
end_number(y) as (VALUES(10)),
z AS (SELECT * FROM generate_series(start_number.x, end_number.y))
SELECT z.*
What's the syntax?
Notes: start_number & end_number may be the result of a query, typically returning a single row.
You need to reference the two CTEs in the FROM clause:
WITH start_number(x) as (
VALUES(1)
), end_number(y) as (
VALUES(10)
)
SELECT *
FROM start_number, end_number, generate_series(start_number.x, end_number.y))
You can simplify that by using only a single CTE for the numbers:
WITH params(start_number, end_number) as (
VALUES (1, 10)
)
SELECT *
FROM params p, generate_series(p.start_number, p.end_number))
You need a from clause so you can get x and y:
WITH start_number(x) as (
VALUES (1)
),
end_number(y) as (
VALUES (10)
),
z AS (
SELECT gs.z
FROM start_number CROSS JOIN
end_number CROSS JOIN LATERAL
generate_series(start_number.x, end_number.y) gs(z)
)
SELECT z.*
FROM z;
Merely defining a CTE does not make it available to subsequent code and CTEs in the query. You need to include the CTE in a FROM clause.
In addition, you should be in the habit of naming the columns in CTEs. In your code z has a column with no name.
The above is one method. You could also use subqueries as well:
WITH start_number(x) as (
VALUES(1)
),
end_number(y) as (
VALUES(10)
),
z AS (
SELECT *
FROM generate_series((SELECT x FROM start_number), (SELECT y FROM end_number))
)
SELECT z.*
FROM z;
Here is a db<>fiddle.
I have been given a script to clean up which uses approx 85 temp tables, I have been advised to use Common Table Expressions.
I have 3 CTE's, the first is the result of 7 tables pulled together using Union all. Followed by 2 more CTE's. The script runs up to:
select * from CTE_1
Union all
select * from CTE_2
Union all
select * from CTE_3
I then want to put all these results into a reusable table so I can then add some joins with various case statement logic. How can I put these into a temp table so that I can reference it later.
I'm looking to reduce the amount of temp tables so rather than put each CTE into a temp table I would ideally put multiple CTE's into one temp table. I currently have:
; with [CTE One] as (
select 1 as col
),
[CTE Two] as (
select 2 as col
),
[CTE Three] as (
select 3 as col
)
select * from CTE_1
Union all
select * from CTE_2
Union all
select * from CTE_3
Alternatively..
IF ( OBJECT_ID('tempdb..#temptable') IS NOT NULL )
BEGIN
DROP TABLE #temptable
END
CREATE TABLE #temptable
(
val int
)
;
WITH [CTE One]
AS ( SELECT 1 AS col
),
[CTE Two]
AS ( SELECT 2 AS col
),
[CTE Three]
AS ( SELECT 3 AS col
)
INSERT INTO #temptable (val)
SELECT *
FROM ( SELECT *
FROM CTE_1
UNION ALL
SELECT *
FROM CTE_2
UNION ALL
SELECT *
FROM CTE_3
) T
Can't you just use into?
select *
into #temptable
from CTE_1
Union all
select * from CTE_2
Union all
select * from CTE_3;
I might also be inclined to use a table variable, if the code is structured appropriately.
I have a complex sql query, named qryARAT2B_EXT.
SELECT
*
FROM
(
SELECT
*
FROM
(
SELECT
*,
firstStudy,
ABS(DATEDIFF('d', firstStudy, Check_Date)) as diff
FROM
(
SELECT
*,
(
SELECT
TOP 1 Check_Date
FROM
qryARAT2B
WHERE
PATNR = [PАРАМ]
ORDER BY
Check_Date
)
AS firstStudy
FROM
(
SELECT
*
FROM
qryARAT2B
WHERE
PATNR = [PАРАМ]
)
AS myPatientsWithStudy
)
AS myPatientsFirstStudy
)
WHERE
diff = 0
)
AS T1
LEFT JOIN
(
SELECT
*
FROM
(
SELECT
*,
firstStudy,
ABS(DATEDIFF('d', firstStudy, Check_Date)) as diff
FROM
(
SELECT
*,
(
SELECT
TOP 1 Check_Date
FROM
qryARAT2B
WHERE
PATNR = [PАРАМ]
ORDER BY
Check_Date
)
AS firstStudy
FROM
(
SELECT
*
FROM
qryARAT2B
WHERE
PATNR = [PАРАМ]
)
AS myPatientsWithStudy
)
AS myPatientsFirstStudy
)
WHERE
diff = 4
)
As T2
ON T1.PATNR = T2.PATNR
When I open it in ms-access, it asks for the value of the [PARAM] and produces the result.
I have a table of patients.
tblPatient with the columns:
PATNR, and s.o.
That contains the PATNR's of patients:
000001
000002
...
XXXXXX
I need to write sql to calculate data for all PATNR's at once.
something like this:
SELECT (SELECT * FROM qryARAT2B_EXT WHERE [PARAM] = PATNR) from tblPatient
But it is not accepted from ms-access. I'm not able to pass parameter to qryARAT2B_EXT from the SQL. Is there any specific syntax for it in ms-access?
typically to create a table in Presto (from existing db tables), I do:
create table abc as (
select...
)
But to make my code simple, I've broken out subqueries like this:
with sub1 as (
select...
),
sub2 as (
select...
),
sub3 as (
select...
)
select
from sub1 join sub2 on ...
join sub3 on ...
Where do I put the create table statement here? The actual query is more complex than the above so I am trying to avoid having to put the subqueries within the main query.
This is possible with an INSERT INTO not sure about CREATE TABLE:
INSERT INTO s1
WITH q1 AS (...)
SELECT * FROM q1
Maybe you could give this a shot:
CREATE TABLE s1 as
WITH q1 AS (...)
SELECT * FROM q1
If Strings are concerned, then following works
WITH sample AS (
SELECT * FROM (VALUES ('strA', 'strB'), ('strC', 'strD'), ('strE', 'strF')) AS account (name, cat)
)
SELECT name, cat from sample;
if integers are only concerned values , then following works: -
WITH slab (SNo,Amount) AS (VALUES (1,1000),(2,2000),(3,3000),(4,4000),(5,5000),(6,6000),(7,7000),(8,8000),(9,9000),(10,10000),(11, 11000),(12,12000),(13,13000),(14,14000),(15,15000),(16,16000),(17,17000),(18,18000),(19,19000),(20,20000),(21,21000),(22,22000),(23,23000),(24,24000),(25,25000),(26,26000),(27,27000),(28,28000),(29,29000),(30,30000),(31,31000),(32,32000),(33,33000),(34,34000),(35,35000),(36,36000),(37,37000),(38,38000),(39,39000),(40,40000),(41,41000),(42,42000),(43,43000),(44,44000),(45,45000),(46,46000),(47,47000),(48,48000),(49,49000),(50,50000),(51,51000)
)
SELECT * FROM slab;
Syntax is just as if you prepend create table .. as to the select. E.g. the following worked for me on Presto 0.170:
create table memory.default.a as
with w as (
select * from (values 1) t(x)
)
select * from w;
(I use experimental memory connector so that this is copy-pastable to try it out.)
I believe you need to 'wrap' the entire query like this:
create table EXAMPLE as (
with sub1 as (
select ...
),
.......
select
from sub1....
)
This works
create table answertable as
(
select * from (
WITH
q as ( select findcode from (values 'G463','G464','G465','G466','G467','G468','I64','I694') as concept(findcode) )
select s.*
from table1 s
inner join q on starts_with(s.xxx, q.findcode)
where s.pk is not null
)
)