I am trying to run a query given three tables.
DECLARE #TABLE1 TABLE (ID CHAR(2))
DECLARE #TABLE2 TABLE (ID CHAR(2))
DECLARE #TABLE3 TABLE (ID CHAR(2))
INSERT INTO #TABLE1 VALUES('1')
INSERT INTO #TABLE1 VALUES('2')
INSERT INTO #TABLE2 VALUES('1')
--NOTHING in TABLE3
I Need to get only the values that are present and ignore the null table. This doesn't work since TABLE3 has no values.
SELECT ID
FROM #TABLE1
INTERSECT
SELECT ID
FROM #TABLE2
INTERSECT
SELECT ID
FROM #TABLE3
**Result should be 1**
How do I ignore the any table if it's null but keep the other values?
Why not do a union of select distincts from each table, and then group that by ID and select count(*), and select only rows with count(*) equal to the maximum value of count(*) in the result?
It's a bit of a mess of subqueries at this point unfortunately but you should get the logic :)
Intersect is not going to work for you as you can't add conditions to it.
From what I understand you want to select all records where the ID appears in at least 2 of the tables. I am assuming that the ID is unique to each table.
The following works in MS SQL Server:
DECLARE #TABLE1 TABLE (ID CHAR(2))
DECLARE #TABLE2 TABLE (ID CHAR(2))
DECLARE #TABLE3 TABLE (ID CHAR(2))
INSERT INTO #TABLE1 VALUES('1')
INSERT INTO #TABLE1 VALUES('2')
INSERT INTO #TABLE2 VALUES('1')
--NOTHING in TABLE3
;WITH AllValues AS
(
SELECT ID
FROM #TABLE1
UNION ALL
SELECT ID
FROM #TABLE2
UNION ALL
SELECT ID
FROM #TABLE3
)
SELECT ID
FROM AllValues
GROUP BY ID
HAVING COUNT(*) > 1
Maybe... But the design of the system is extremely foreign; a real world example would help understand what you're trying to do.
Select count(*), ID FROM (
Select ID from #table1
UNION
Select ID from #table2
UNION
Select ID from #table3) Derived
Where RowNum =1
GROUP BY ID
ORder by count(*) DESC
Updated where clause was in wrong place
Related
In mysql we write query as
create table new_table as (select a.* from Table1 a union select b.* from Table2 b)
This syntax doesn't work in SQL Server - what's the way around for creating a table from union in SQL Server?
in SQL Server, you can use SELECT .. INTO
select a.*
into new_table
from Table1 a
union
select b.*
from Table2 b
The following query should do what you want:
select * into new_table
from (
select * from Table1 union select * from Table2 ) a
You need to write your query as shown below for creating table in sql server using union clause.
create table #table1 (Id int, EmpName varchar(50))
insert into #table1 values (1, 'Suraj Kumar')
create table #table2 (Id int, EmpName varchar(50))
insert into #table2 values (2, 'Davinder Kumar')
SELECT * INTO #NewTable FROM
(SELECT Id, EmpName FROM #table1
UNION
SELECT Id, EmpName FROM #table2
)a
SELECT * FROM #NewTable
Here new table of name - #NewTable has been created by union of two tables #table1 and #table2
I am trying to insert data to a table from another where data is not already exists
The table I am inserting the data into
CREATE TABLE #T(Name VARCHAR(10),Unit INT, Id INT)
INSERT INTO #T
VALUES('AAA',10,100),('AAB',11,102),('AAC',12,130)
The table I am selecting the data from
CREATE TABLE #T1(Name VARCHAR(10),TypeId INT,Unit INT, Id INT)
INSERT INTO #T1
VALUES('AAA',3,10,100),('AAA',3,10,106)
In this case I want to select ('AAA',3,10,106) from #T1 because AAA,106 combination not exists in #T
Basically what I want is to populate unique Name and Id combination
I tried below which doesn't seems to work
SELECT *
FROM #T1
WHERE NOT EXISTS(SELECT * FROM #T)
You have to somehow correlate the two tables:
SELECT *
FROM #T1
WHERE NOT EXISTS(SELECT *
FROM #T
WHERE #T1.Name = #T.Name AND #T1.ID = #T.ID)
The above query essentially says: get me those records of table #T1 which do not have a related record in #T having the same Name and ID values.
Your best bet is probably to use a insert statement with a subquery. Something like this:
SQL Insert Into w/Subquery - Checking If Not Exists
Edit: If you're still stuck, try this--
INSERT INTO #T (Name, Unit, Id)
SELECT Name, Unit, Id
FROM #T1
WHERE
NOT EXISTS (SELECT Name, Unit, Id FROM #T
WHERE #T.Name = #T1.Name AND #T.Unit = #T1.Unit AND #T.Id = #T1.Id)
I have a stored procedure in SQL Server 2008R2 that takes two user defined table types as parameters. Each of these types is a simple table holding an series of Ids:
CREATE TYPE [dbo].[Ids] AS TABLE(
[Id] [int] NULL
)
I want to combine the two parameters passed in to achieve the following result:
DECLARE
#Table1 TABLE (Id INT )
DECLARE
#Table2 TABLE (Id INT )
INSERT INTO #Table1 VALUES (1)
INSERT INTO #Table1 VALUES (2)
INSERT INTO #Table2 VALUES (11)
INSERT INTO #Table2 VALUES (22)
SELECT * FROM #Table1
SELECT * FROM #Table2
DECLARE
#Combined TABLE (T1 INT, T2 INT)
-- TODO: Magically combine the two tables
SELECT * FROM #Combined
-- Output would be the following
1, 11
1, 22
2, 11
2, 22
You seem to want a cross join:
insert into #Combined(t1, t2)
select t1.id, t2.id
from #Table1 t1 cross join
#Table2 t2;
I want one record from a table having unique Primary Key and duplicate Foreign Key
Please see attached image below
alt text http://img413.imageshack.us/img413/9940/findduplicate.png
Thanks
Select fk, Count(*)
from table1
group by fk
having count(*) > 1
Primary key by definition means there will only be one, so your question appears to actually appears to be are the any rows with more than 1 child row:
select *
from table1 t
where exists (
select id from table2 t2
where t2.fkid = t.id
group by t2.id
having count(*) > 1
)
This would retrieve all unique fk and textVal values from the table:
select distinct fk, textVal from myTable
Have a look at this example.
This will find you all IDs from TABLE1 where it is duplicated in TABLE2 as a FOREIGN KEY
DECLARE #Table1 TABLE(
id INT
)
DECLARE #Table2 TABLE(
id INT,
fkid INT
)
INSERT INTO #Table1 (id) SELECT 1
INSERT INTO #Table1 (id) SELECT 2
INSERT INTO #Table1 (id) SELECT 3
INSERT INTO #Table2 (id,fkid) SELECT 1, 1
INSERT INTO #Table2 (id,fkid) SELECT 2, 2
INSERT INTO #Table2 (id,fkid) SELECT 3, 2
INSERT INTO #Table2 (id,fkid) SELECT 4, 3
INSERT INTO #Table2 (id,fkid) SELECT 5, 3
INSERT INTO #Table2 (id,fkid) SELECT 6, 3
SELECT t2.fkid
FROM #Table2 t2
GROUP BY t2.fkid
HAVING COUNT(t2.fkid) > 1
SQL Newbie here, and I'm having a hell of a time finding what should be a simple code example to answer what I think is a simple question.
I need to write a stored procedure that does three things in order:
1) Select rows from one table
2) Update rows in another table, using values from the results table in #1
3) Return the results table from #1.
What I can't find is any example about how to return a value like this from a stored procedure. Also, how to retrieve that returned table from the caller (which is another T-SQL script).
Have a look at this.
DECLARE #Table1 TABLE(
ID INT,
VAL int
)
INSERT INTO #Table1 (ID,VAL) SELECT 1, 1
INSERT INTO #Table1 (ID,VAL) SELECT 2, 2
INSERT INTO #Table1 (ID,VAL) SELECT 3, 3
DECLARE #Table2 TABLE(
ID INT,
VAL VARCHAR(MAX)
)
INSERT INTO #Table2 (ID,VAL) SELECT 1, 1
INSERT INTO #Table2 (ID,VAL) SELECT 2, 2
INSERT INTO #Table2 (ID,VAL) SELECT 3, 3
--Lets say this is the 2 tables
--now this will go into the sp
UPDATE #Table1
SET Val = t1.Val + t2.Val
FROM #Table1 t1 INNER JOIN
#Table2 t2 ON t1.ID = t2.ID
SELECT t1.*
FROM #Table1 t1 INNER JOIN
#Table2 t2 ON t1.ID = t2.ID
--and you can insert into a var table in the tsql script that calls the sp
DECLARE #Table1TSQL TABLE(
ID INT,
VAL int
)
INSERT INTO #Table1TSQL (ID,VAL) EXEC YourSP