If it is possible, how to create one table/temp table out of multiple temp tables using SQL? Because creating a view is unfortunately not possible with temp tables.
For example, I have 3/more temp tables:
WITH a_table AS (
SELECT *
FROM a
JOIN b
WHERE ...
)
, b_table AS (
SELECT *
FROM c
JOIN d
WHERE ...
)
, c_table AS (
SELECT *
FROM c
JOIN d
WHERE ...
)
SELECT * FROM a_table
UNION
SELECT * FROM b_table
UNION
SELECT * FROM c_table
How do I create just one table instead? Or have one view for all these unioned temp tables?
Tried to create a view but that is not possible with temp tables and the query that I have has like 50 temp tables.
Related
I am trying to create a some logic using CTE and then instead of using DML statement after CTE, I am trying to create a temp table using CTE. This is possible in T-SQL. Is it possible in GBQ?
I know I can create temp table instead of CTE in the below example, but just want to know the possibility!
WITH xyz AS
(SELECT * FROM table1)
CREATE TEMP TABLE temp1 AS (
SELECT * FROM xyz INNER JOIN table2 on ...);
Use below instead
CREATE TEMP TABLE temp1 AS (
WITH xyz AS
(SELECT * FROM table1)
SELECT * FROM xyz INNER JOIN table2 on ...
);
So in 2022 I believe that no longer works without a script or session in GBQ:
You could write your query as follows:
WITH xyz AS (
SELECT
*
FROM table1
)
SELECT
*
FROM xyz
INNER JOIN table2
ON ...
and then click the More Button -> Query Settings as shown below:
After that you can set a destination for your results a a temporary table and here you can define the name of your table etc. in your case it's temp1:
This way you can just save the results of your query into a temporary table. Hope it helps!
I am created two temp tables in which TABLE1 contains all the items and TABLE2 only has the partial list of TABLE1. How can I find out which parts TABLE 1 has that TABLE2 doesn't have or vice versa? Please keep in mind, the temp table only has one column due to the DISTINCT statement.
I do have to use Joins but my thought is if I JOIN on the individual columns of each table and then in the Where clause state that e.g. column 1 is not equal column 2, it's contradicting.
IF EXISTS (
SELECT *
FROM tempdb.dbo.sysobjects
WHERE id = Object_id(N'tempdb..#TABLE1')
)
BEGIN
DROP TABLE #TABLE1
END
IF EXISTS (
SELECT *
FROM tempdb.dbo.sysobjects
WHERE id = Object_id(N'tempdb..#TABLE2')
)
BEGIN
DROP TABLE #TABLE2
END
------------------------------------------------
select distinct 1.parts as #TABLE1 from List1 1 --- MAIN LIST
select distinct 2.parts as #TABLE2 from List2 2 --- ADDITIONAL LIST
select *
from #TABLE2 left join
#TABLE1
on 2.parts = 1.parts
where 2.parts <> 1.parts
Your where clause is undoing the left join. I would recommend not exists:
select t1.*
from #table1 t1
where not exists (select 1 from #table2 t2 where t2.parts = t1.parts);
I can join two tables, but i am trying to save them as a new table but it keeps saying my select syntax is wrong?
I am extremely new to SQL server
Create table New_table AS
SELECT *
from Old_Table inner join id on Old_table.id=Other_table.id
You need SELECT ... INTO:
SELECT Old_table.id
, Old_table.foo
, Other_Table.bar
, Other_Table.foo AS baz -- foo has to be renamed, can't have two columns with the same name
INTO New_table
FROM Old_Table
INNER
JOIN Other_Table
ON Old_table.id = Other_table.id
I have a table t1 in db1, and another table t2 in db2. I have the same columns in both tables.
How do I retrieve only those rows which are not in the other table?
select id_num
from [db1].[dbo].[Tbl1]
except
select id_num
from [db2].[dbo].[Tb01]
You can use LEFT JOIN or WHERE NOT IN functions.
Using WHERE NOT IN:
select
dbase1.id_num from [db1].[dbo].[Tbl1] as dbase1
where dbase1.id_num not in
(select dbase2.id_num from [db2].[dbo].[Tb01] as dbase2)
Using LEFT JOIN (recommended as this is much faster)
SELECT dbase1.id_num
FROM [db1].[dbo].[Tbl1] as dbase1
LEFT JOIN [db2].[dbo].[Tb01] as dbase2 ON dbase2.id_num COLLATE Latin1_General_CI_A = dbase1.id_num COLLATE Latin1_General_CI_A
WHERE dbase2.id_num IS NULL
Compare tables with DB2 other databases may have a select a - b statement or similar. Because at the time my database also didn't have a-b I use the following. Wrap the statement in a create table statement to dig into the results. No rows and the tables are identical. I've added in a column BEFORE|AFTER which makes the results easy to read.
SELECT 'AFTER', A.* FROM
(SELECT * FROM &AFTER
EXCEPT
SELECT * FROM &BEFORE) AS A
UNION
SELECT 'BEFORE', B.* FROM
(SELECT * FROM &BEFORE
EXCEPT
SELECT * FROM &AFTER) AS B
I have 9 tables each with value like
Level_1_tab
Code Name
ae1 hdgdgd
ae2 dhdh
level_2_tab
code Name
2 jfjfjf
3 fkfjfjf
similarly level_3_tab , level_4_tab, level_5 table so on and so forth till level_9_tab.
I am inserting the code column into a new table and checking for duplicates.
SELECT
code, name, COUNT(*)
FROM
new_table
GROUP BY
code, name
HAVING
COUNT(*) > 1;
Can i write a query and compare the code column of these 9 tables and check for duplicates ? that all the rows with duplicate code values should be retrieved
You can do a union all of the 9 tables and run your same query on that.
select code, name, count(*) from
(select code, name from table 1 union all
select code, name from table 2 union all
select code, name from table 3 union all
select code, name from table 4 union all
.....)
group by code, name
having count(*) > 1;
Everyone's suggestion of union all is great to build your initial table to look for duplicates in. But you say you already have a temp table with all of the values from the 9 tables which is perfect and another great way of doing it if your dataset isn't huge.
The only step your missing from your description to get the actually duplicate rows is to use your duplicate query above to re-query your temp table and return the rows you want. A great way of doing this is through common table expressions which basically allows you to build a query on top of your other query without another temp table. So use a cte and join back to your temp table.
;WITH CommonTableExpression AS (
SELECT
code, name, COUNT(*)
FROM
new_table
GROUP BY
code, name
HAVING
COUNT(*) > 1;
)
SELECT t.*
FROM
new_table t
INNER JOIN CommonTableExpression c
ON t.code = c.code
AND t.name = c.name
If you want to do it to each of the 9 tables independently rather than to your temp table. Place the duplicates into another temp table and join on it.
SELECT
code, name, COUNT(*)
INTO #Duplicates
FROM
new_table
GROUP BY
code, name
HAVING
COUNT(*) > 1
SELECT
l.*
FROM
leve_1_tab l
INNER JOIN #Duplicates d
ON l.Code = d.Code
AND l.name = d.name
Seeing everyone loves union all here is a way to do it with out temp tables and lots of union all s I wonder which would be a more optimized query though.
;WITH cteAllCodeValues AS (
select code, name from table 1 union all
select code, name from table 2 union all
select code, name from table 3 union all
select code, name from table 4 union all
--.....)
)
, cteDuplicates AS (
SELECT code, name, RecordCount = COUNT(*)
FROM
cteAllCodeValues
GROUP BY
code, name
)
SELECT c.*
FROM
cteDuplicates d
INNER JOIN cteAllCodeValues c
ON d.code = c.code
AND d.name = c.name