I am basically trying to run a create table statement using a query that has a with clause within it, but I am getting an error. Is there a different way to run this? The query statement is something like this:
CREATE TABLE DATA_TABLE AS
(
WITH X AS
(.....)
SELECT * FROM X
)
I would appreciate any help. Thanks.
Here's what you want.
CREATE TABLE t
AS
WITH some_data AS (
SELECT 1 as some_value
FROM dual
UNION ALL
SELECT 2
FROM dual
)
SELECT *
FROM some_data
Related
Thanks in advance !!
I want to get below data in separate table with column how can we achieved this.
From my reading of your question, you would like the results of that SELECT statement put into a new table?
Firstly, I'm assuming your original SQL works as a SELECT statement - e.g., all those tables have the same structure. Note that you can simplify the unions, but I haven't done so here, to keep the key part of the answer (saving the data) as the main focus.
To save the data into another table, you can either create a table first and make that into an insert, or just use 'SELECT INTO' within the main SELECT.
If you are happy with the columns being automatically created, the 'SELECT INTO' version will create columns (e.g., you do not need to specify the columns in a CREATE TABLE statement). However, when you run the SELECT INTO, it does create the table. Therefore if you want to insert further values, you need to specify the column list (or have matching column lists).
SELECT INTO version
select *
INTO #Temp -- Added This row
from
( select * from #OneyearExpiry
union all
select * from #OtherYearExpiry
) A
except
select * from
( select * from #ONEYRCON
union all
select * from #OTHERYRCON
) B
INSERT INTO version
CREATE TABLE #Temp (<your fields here to match the SELECT statement>)
INSERT INTO #Temp
select * from
( select * from #OneyearExpiry
union all
select * from #OtherYearExpiry
) A
except
select * from
( select * from #ONEYRCON
union all
select * from #OTHERYRCON
) B
Set operators are evaluated from top to bottom so there only needs to be 1 subquery. Something like this
select ab.* into #Temp
from (select * from #OneyearExpiry
union all
select * from #OtherYearExpiry
except
select * from #ONEYRCON
except
select * from #OTHERYRCON) ab;
In Hive I can sample data using stack() UDTF like this:
with students as (
select stack(5,
1,'Vikrant',
2,'Abhishek',
3,'Ragesh',
4,'Valeriy',
5,'Swarna') as (id, name)
)
select * from students;
In Presto I can use values for the same.
How can I do it in Impala EXCEPT using multiple selects for each row and UNION ALL like in this answer?
As I studied, Impala does not support table generating functions yet. No stack, no lateral view explode, no UDTF are possible in Impala unfortunately.
So, the only way is this:
with students as (
select 1 as id,'Vikrant' as name union all
select 2 as id,'Abhishek' as name union all
select 3 as id,'Ragesh' as name union all
select 4 as id,'Valeriy' as name union all
select 5 as id,'Swarna' as name
)
select * from students;
Can I create a table from a query formed using with clause?
Sure:
CREATE TABLE t
AS
WITH some_data AS (
SELECT 1 as some_value
FROM dual
UNION ALL
SELECT 2
FROM dual
)
SELECT *
FROM some_data
The CREATE TABLE table_name AS statement creates a table based on a select statement. The solution for a with clause will be :
CREATE TABLE t
AS
SELECT * FROM (
WITH some_data AS (
SELECT 1 as some_value
FROM dual
UNION ALL
SELECT 2
FROM dual
)
);
For multiple CTE (common table expressions; i.e. multiple WITH clause), I found the same syntax worked. i.e.
CREATE TABLE schema.table_name as
WITH table1 as (SELECT 1),
table2 as (SELECT 2)
select * from table2
will create the table_name in the schema from the select statement
Guys is it possible to write a merge statement inside a select like below for correlated subqueries
my requirement is that i have pass to each date from top select statement and for the each date select statement inside using clause should check any data exists for that date and then do insert or update
select date from A a where exists (
merge in to B b
using (
)
..
..
)
Surely you just want to use the SELECT inside the using clause?
merge into B b
using (
select ... where datecol = (select datecol from A a where ...)
)
..
..
)
For this MySQL SELECT statement:
SELECT * FROM MY_TABLE WHERE ID IN(x,y,y,z):
I want 4 rows back - ie I WANT row duplication for the case where I pass duplicate IDs in the list.
Is this possible?
using the IN() construct, that's not possible.
the only way i can think to do this is with a UNION:
SELECT * FROM my_table WHERE id = x
UNION ALL
SELECT * FROM my_table WHERE id = y
UNION ALL
SELECT * FROM my_table WHERE id = y
UNION ALL
SELECT * FROM my_table WHERE id = z
but in all honesty, i would just do the IN() like you have it and make your app code duplicate the rows as needed.
Put your IDs, including dups in a temp table and join your results on that table. The join will take care of filtering, but will keep duplicates if it's in the temp table twice
SELECT * FROM MY_TABLE WHERE ID IN(x,y,z)
union all
SELECT * FROM MY_TABLE WHERE ID IN(y)
To me, IN specify a set of values to search in (and duplication is a concept that conflict with the set one).
You should use other mean to reach your scope.