Having 2 tables with the same structure, like this SQLFiddle, is it possible to build a SQL statement that compares the values of the columns of both tables (where id is the unique key), and return a list of the change columns in the format:
columnname, oldvalue, newvalue
Where oldvalue is the value in Table1 and newvalue is the value in Table2.
You can do something like this:
SELECT T1.Id
,'Name' AS ColumnName
,CAST(T1.name AS VARCHAR(MAX)) AS OldValue
,CAST(T2.name AS VARCHAR(MAX)) AS NewValue
FROM Table1 AS T1
FULL OUTER JOIN Table2 AS T2
ON T1.id = T2.id
UNION
SELECT T1.Id
,'Amount'
,CAST(T1.amount AS VARCHAR(MAX))
,CAST(T2.amount AS VARCHAR(MAX))
FROM Table1 AS T1
FULL OUTER JOIN Table2 AS T2
ON T1.id = T2.id
You need to use a MERGE statement , please note it is only available from SQL 2008 onwards
here is an example
MERGE Production.ProductInventory AS target
USING (SELECT ProductID, SUM(OrderQty) FROM Sales.SalesOrderDetail AS sod
JOIN Sales.SalesOrderHeader AS soh
ON sod.SalesOrderID = soh.SalesOrderID
AND soh.OrderDate = #OrderDate
GROUP BY ProductID) AS source (ProductID, OrderQty)
ON (target.ProductID = source.ProductID)
WHEN MATCHED AND target.Quantity - source.OrderQty <= 0
THEN DELETE
WHEN MATCHED
THEN UPDATE SET target.Quantity = target.Quantity - source.OrderQty,
target.ModifiedDate = GETDATE()
OUTPUT $action, Inserted.ProductID, Inserted.Quantity, Inserted.ModifiedDate, Deleted.ProductID,
Deleted.Quantity, Deleted.ModifiedDate;
GO
you can learn more about merge's here SQL merge
if you only want rows with differences:
SELECT COALESCE(T1.Id, T2.Id) Id
,'Name' AS ColumnName
,CAST(T1.name AS VARCHAR(MAX)) AS OldValue
,CAST(T2.name AS VARCHAR(MAX)) AS NewValue
FROM Table1 AS T1
FULL OUTER JOIN Table2 AS T2
ON T1.id = T2.id
WHERE COALESCE(T1.name,'**') != COALESCE(T2.name ,'**')
UNION ALL
SELECT COALESCE(T1.Id, T2.Id) Id
,'Amount' AS ColumnName
,CAST(T1.Amount AS VARCHAR(MAX)) AS OldValue
,CAST(T2.Amount AS VARCHAR(MAX)) AS NewValue
FROM Table1 AS T1
FULL OUTER JOIN Table2 AS T2
ON T1.id = T2.id
WHERE COALESCE(T1.Amount,0) != COALESCE(T2.Amount,0)
Related
I have two table t1 and t2,
Where t1 has the data like:
Id. Name
1. Ab
2. Dc
3. Cd
t2 has the data as given:
Id. Revenue
1. 100
2. 0
3. 200
And my SQL query is:
select t1.id ,t1.name,sum(t2.rev)
from t1
inner join t2 on t1.id= t2.id
where t1.id=100 and t2.Revenue <> 0
group by t1.id
Just put to GROUP BY columns that you want to select:
select t1.id ,t1.name,sum(t2.rev)
from t1
inner join t2 on t1.id= t2.id
where t1.id=100 and t2.Revenue <> 0
group by t1.id, t1.name, t2.rev
The error means that that you've got SUM of t2.rev field - one row, but SQL Server has also many rows with calculated column and it does not know what a row exactly should be chosen.
UPDATE:
If one of your some column has type such as text, ntext or image, then you should cast it to NVARCHAR type:
select t1.id ,t1.name,sum(t2.rev)
from t1
inner join t2 on t1.id= t2.id
where t1.id=100 and t2.Revenue <> 0
group by t1.id, CAST( t1.name AS NVARCHAR(100)), CAST( t2.rev AS NVARCHAR(100))
UPDATE 1:
TEXT, NTEXT and IMAGE are old type of variable and there types are deprecated. So these types be replaced or casted by the corresponding types VARCHAR(MAX), NVARCHAR(MAX) and VARBINARY(MAX).
If you have just one column of type of TEXT, then just CAST just this column:
select t1.id ,t1.name,sum(t2.rev)
from t1
inner join t2 on t1.id= t2.id
where t1.id=100 and t2.Revenue <> 0
group by t1.id, CAST( t1.name AS NVARCHAR(100)), t2.rev
If anything, the column causing the error would be t1.name1 Since the name is completely dependent on the ID, you can artificially add it to the group by clause without harming the query's correctness:
select t1.id ,t1.name,sum(t2.rev)
from t1
inner join t2 on t1.id= t2.id
where t1.id=100 and t2.Revenue <> 0
group by t1.id, t1.name
if you want to display any column and you used group by than you must group by one those column also
select t1.id ,t1.name,sum(t2.Revenue) from t1
inner join t2 on t1.id= t2.id where t1.id=1 and t2.Revenue <> 0 group by t1.id,t1.Name
I have two tables t1 and t2.
t1 having 10k records and t2 having 2k records. The 2k records of t2 is present in t1.
I wanted the 8k different records from t1 which is not present in t2.
I'm doing this as below:
select id, second_telphon from t1
except
select id, second_telphon from t2
However, I'm still getting all the 10k records. Is "except" keyword not working?
how can I achieve this?
you can perform a Join to get the unique data from the tables .
like the tables t1 & t2 both you cna perform left or right join .
example:
SELECT T1.*
FROM T1
WHERE NOT EXISTS(SELECT NULL
FROM T2
WHERE T1.ID = T2.ID
AND T1.Date = T2.Date
AND T1.Hour = T2.Hour)
OR .
SELECT T1.*
FROM T1
LEFT JOIN T2
ON T1.ID = T2.ID
AND T1.Date = T2.Date
AND T1.Hour = T2.Hour
WHERE T2.ID IS NULL
Try this:
SELECT *
FROM T1
WHERE NOT EXISTS(SELECT id,second_telphon FROM t2)
If ID is a unique value, Try this also:
SELECT *
FROM T1
WHERE ID NOT IN(SELECT ID FROM t2)
You could try a union, followed by an aggregation to restrict to those records in the first table which were not duplicated by the second table:
SELECT id, second_telphon
FROM
(
SELECT id, second_telphon FROM t1
UNION ALL
SELECT id, second_telphon FROM t2
) t
GROUP BY id, second_telphon
HAVING COUNT(*) = 1;
If a record, being defined as an id, second_telphon pair, has a record count of only one after the union, it implies that this record was unique to the first table.
Just do left join
select t1.id,t1.second_telphon from t1
left join t2 on
t1.id = t2.id
and t1.second_telphon =t2.second_telphon
where t2.id is null
Any method to do this?
Table1
1
2
3
4
5
Table2
3 (with the condition)
4 (without the condition)
I want to:
Select all records from Table1 if it exists in Table 2, where...(condition)
Select all records from Table1 if it not exists in Table2
Combine both select results. Sort all results with their created date.
For example, the result should be:
Result
1
2
3
5
Hopefully this can help.
SELECT t1.* from table1 t1
JOIN table2 t2
ON t1.ID = t2.ID
UNION ALL
SELECT t1.* from table1 t1 where ID in
(
SELECT t2.ID from table1 t1 except Select t2.ID from table2 t2
)
ORDER BY t1.CreatedDate
You can achieve this by doing:
SELECT t1.id
FROM Table1 t1
LEFT JOIN Table2 t2 on t1.id = t2.id
WHERE condition OR t2.id IS NULL
ORDER BY t1.CreatedDate;
See fiddle (I assumed condition to be t2.id!=4, but it can be anything else depending on other data in your tables).
There could be multiple solution.
One way
we can get the result set using two different queries and at last combine both of the result-set using UNION
Another way,
First statement is saying that get all the result set from TABLE1 if it exists in TABLE2 as well with some criteria (condition in where clause)
means using INNER JOIN we can achieve this
Second statement is saying get all the result set from TABLE1 which are not present in TABLE2
means along with INNER JOIN ed query also include the TABLE1's data if not present in TABLE2
here we can take the help of LEFT OUTER JOIN (taking TABLE1 on the left side)
Assumption: (condition: t1.Id != 4)
Let's try to understand the query using both of the above mentioned ways
---- -- --Step1 Create table and insert records
---- create table1 with Id int identity columsn
--CREATE TABLE Table1 (Id INT IDENTITY(1,1), CreatedDate smalldatetime default(getdate()));
--go
---- insert 1st 5 integers into Table1
--INSERT INTO Table1 DEFAULT VALUES
--go 5
---- create Table2 with Id int column
--CREATE TABLE Table2 (Id INT , CreatedDate smalldatetime default(getdate()));
--go
---- insert records 3,5 into Table2
--INSERT INTO Table2(Id) VALUES (3), (4);
-- -- -- Solution: one way
; WITH cteMyFirstResult AS
(
-- 2.1. Select all records from Table1 if it exists in Table 2, where...(condition)
SELECT
Id, CreatedDate
FROM Table1 AS t1
WHERE t1.Id IN (SELECT Id FROM Table2 AS t2)
AND t1.Id != 4 -- assumption it can be any condition
),cteMySecondResult AS (
-- 2.2. Select all records from Table1 if it not exists in Table2
SELECT
Id, CreatedDate
FROM Table1 AS t1 WHERE t1.Id NOT IN (SELECT Id FROM Table2 AS t2)
)
-- 2.3. Combine both select results. Sort all results with their created date.
SELECT
Id, CreatedDate
FROM cteMyFirstResult
UNION
SELECT
Id, CreatedDate
FROM cteMySecondResult
ORDER BY CreatedDate;
-- -- Solution: Another way (with bug)
SELECT t1.Id, t1.CreatedDate
FROM Table1 AS t1
LEFT JOIN Table2 AS t2 on t1.id = t2.id
WHERE t1.Id != 4
Order by T1.CreatedDate;
-- in this query we are using the criteria after doing the join operation.
-- thus after filtering out the result set based on JOIN Condition this condition will get applied
-- and if there is any null record in the Table1 for column Id (used in join) will not come in the final result-set
-- to avoid this we can include NULL check along with our criteria
-- -- Solution: Another way
SELECT t1.Id, t1.CreatedDate
FROM Table1 AS t1
LEFT JOIN Table2 AS t2 on t1.id = t2.id
WHERE ( t1.Id != 4 ) OR t1.Id IS NULL -- include all your criteria within small-barcket)
Order by T1.CreatedDate;
Thanks for all responses.
I come out with the answer I want:
SELECT *
FROM Table1 t1
WHERE NOT EXISTS(SELECT 1 FROM Table2 t2
WHERE t1.ID = t2.ID
AND t2.CIF_KEY = #CifKey
AND t2.STATUS <> ''3'')
AND (condition in where clause)
I am using SQL Server 2008. I have two tables, Table1 and Table2 as below.
Table1
ID Col1 Col2 Col3
-- ---- ---- ----
1 X Y Z
Table2
ID Col1 Col2 Col3
-- ---- ---- ----
1 1 2 3
I want to write a stored procedure, to return result something like below. And have to achieve this result without using cursor.
Result
Key Value
--- -----
X 1
Y 2
Z 3
Edited:
I required one result set.
Both IDs are parameter of my Store Procedure.
Since you are using SQL Server 2008, you can use CROSS APPLY with VALUES to unpivot data. You can first JOIN the two table on the id column and then unpivot it into the key/value columns:
select [key], value
from
(
select t1.col1, t2.col1 t2_col1,
t1.col2, t2.col2 t2_col2,
t1.col3, t2.col3 t2_col3
from table1 t1
inner join table2 t2
on t1.id = t2.id
) src
cross apply
(
values
(col1, t2_col1),
(col2, t2_col2),
(col3, t2_col3)
) c ([key], value);
See SQL Fiddle with Demo
select t1.col1 as [Key]
, t2.col1 as Value
from dbo.Table1 t1
join dbo.Table2 t2
on t1.id = t2.id
union all
select t1.col2
, t2.col2
from dbo.Table1 t1
join dbo.Table2 t2
on t1.id = t2.id
union all
select t1.col3
, t2.col3
from dbo.Table1 t1
join dbo.Table2 t2
on t1.id = t2.id
I need to build an SQL statement to delete from certain table the records that match another select statement.
In Teradata we use
delete from table1
where (col1, col2) in (
select col1,col2
from table2
)
While in SQL Server it's not allowed to have more than 1 column in the WHERE..IN clause. I thought I can use the WITH clause:
with tempTable(col1,col2) as (
select col1,col2
from table2
)
delete from table1
where table1.col1 = tempTable.col1
and table1.col2 = tempTable.col2
How to use WITH..DELETE clause? Is there another way?
This should do it:
DELETE Table1
from Table1 t1
inner join tempTable t2
on t2.Col1 = t1.Col1
and t2.Col2 = t1.Col2
First build a query that selects the rows you need:
SELECT t1.*
FROM [Table1] t1
INNER JOIN [Table2] t2 ON t1.[col1] = t2.[col1] AND t1.[Col2]=t2.[Col2]
Test it to make sure it returns exactly the rows you want to delete. Then turn it into a delete statement by changing the "SELECT" to "DELETE" and removing the column list:
DELETE t1
FROM [Table1] t1
INNER JOIN [Table2] t2 ON t1.[col1] = t2.[col1] AND t1.[Col
delete from table1 t1 where exists
(
select 1 from table2 t2 where t1.col1 = t2.col1 and t1.col2 > t2.col2
)
with tempTable(col1,col2) as (
select col1,col2
from table2
)
delete table1 from tempTable
where table1.col1 = tempTable.col1
and table1.col2 = tempTable.col2
This works for me
WITH CTE AS
(
SELECT TOP 50000 *
from v020101hist order by data
)
DELETE FROM CTE