Transact SQL :: Comparing Two Tables By NOT NULL Cells In Different Columns
Oct 22, 2015
We have two tables:
Table1
Servers|Databases|Users|Names
Server1|Database1|User1|Name1
Server2|Database2|User2|Name2
Server3|Database3|User3|Name3
Server4|Database4|User4|Name4
Server5|Database5|User5|Name5
Table2
Servers|Databases|Users|Names
NULL |Database1|NULL |Name1
NULL |NULL |User1|Name2
NULL |NULL |NULL |Name3
Server5|Database5|NULL |NULL
I need to check Table1 by Table2 only on NOT NULL cells and if all of them in the row match do not return that row as the result. In this case it will be:
Results:
Servers|Databases |Users |Names
Server2|Database2|User2|Name2
Server4|Database4|User4|Name4
I used query like this:
SELECT a.Server, a.Databases, a.Users, a.Names FROM Table1
EXCEPT
SELECT ISNULL(b.Server,c.Server), ISNULL(b.Databases,c.Databases), ISNULL(b.Users,c.Users), ISNULL(b.Names,c.Names) FROM Table2 AS a, Table1 AS c
But for many rows (like 100 000) it takes ages to get results, any better way to work on this?
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Sep 28, 2006
Hi All.
I'm having some issues with what seems to be a simple update statement but is giving me grief when one or both of the columns I'm comparing are null. My statement (simplified) is as follows:-
UPDATE
TAB_A
SET
TAB_A.TRADCODE = TAB_B.TRADCODE
FROM
TADS_STAGE.DBO.UNCLBRAMDEPT TAB_B
JOIN
TADS.DBO.UNCLBRAMDEPT TAB_A
ON
TAB_B.BRANCODE = TAB_A.BRANCODE
AND
TAB_B.MERDCODE = TAB_A.MERDCODE
AND
(
TAB_B.TRADCODE <> TAB_A.TRADCODE
)
If either of the TRADCODE fields (or both) are null then the comparison fails to return the row to update. I've tried setting the ANSI_NULLS setting to off, this has no effect, presumably because it will only work when comparing a column to a variable or evaluating if the column is null itself.
I've considered using ISNULL, but if one of the columns happens to contain the value that I specify as the replacement value then the comparison will result true and not include the row.
I'd be grateful for any pointers!
Thanks in advance
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Sep 29, 2015
I need to compare records between two tables. There is no ID in the tables to do a simple join between them. So, what I'm looking for is: get the first record from table1 and read all record from table2 and give me back the most similar record. The String Distance is a predefined function.
Select a.table1
,b.table2
from table1 a, table2 b
where StringDistance (''a.table1,'b.table2') >90
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Mar 5, 2014
I am trying to write an SQL command for my crystal report. I need to compare the same column in 3different tables & get the data from each table for only the matching data.. I understand I need to create a temporary table, get the data into it & then work around.. I am quite new to SQL.
Eg: Considering one customer account
Table 1
Cust.No Name Amt_Counter AmtPaid
123.456 sam 0 0
123.456 sam 1 50
Table 2
Cust.No Name Freq_Counter Frequency
123.456 sam 1 0
123.456 sam 2 15
[code]....
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Jul 20, 2005
Hi,I have 2 tables and each has a text column. When i compared the 2columns with the LIKE operator i found something strange.create table test1( var1 text )create table test2( var1 text )insert into test1 values ( '-- [ CustomerType = 1 ]' )insert into test2 values ( '-- [ CustomerType = 1 ]' )select * from test1, test2where test1.var1 like test2.var1The last query surprisingly did not return any results. However when itook of the '[' in the text data and had something like thisinsert into test1 values ( '-- CustomerType = 1 ]' )insert into test2 values ( '-- CustomerType = 1 ]' )the query returned expected results, showing one row.any helpful would be great.Regards,Arun Prakash. B
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Oct 22, 2015
Got a query taking too much time because of lack of cross columns MAX/MIN functions. Consider a similar example where a View is required to reflect distribution of Water among different towns each having four different levels of distribution reservoir tanks of different sizes:In this case the basic table has columns like:
PurchaseDate
TownName
QuantityPurchased
Tank1_Size
Tank2_Size
Tank3_Size
Tank4_Size
Now suppose I need a query to distribute QuantityPurchased in the Four additional Columns computed on the basis depending on the sizes declared in the last four fields,in the same order of preference.For example: I have to use IIFs to check: whether the quantity purchased is less than Tank_A if yes then Qty Purchased otherwise Tank_A_Size itself for Tank_A_Filled
then again IIF but this time to check:
Whether the quantity purchased less Tank_A_Filled (Which again needs to be calculated as above) is less than Tank_B if yes then Tank_A_Filled (Which again needs to be calculated as above) otherwise Tank_B_Size itself for Tank_B_Filled
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May 20, 2015
I've been working with powerpivot and I'm trying to compare 2 text values that are in 2 different tables.For example in TableA I have the column Value and I have the values G and C. What I'm trying to do in TableB is compare the values from TableB with TableA.BOTH values are text but I keep getting an error
=IF(TableB[Value]=TableA[Value], 1,0)
For some reason the TableB doesn't recognize TableB[Value] as text...
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Jul 7, 2015
I've got a table with 6 fields :
EmployeeAccess
(MasterID, LoginID, AccessID, Storage1, Storage2, Storage3)
that needs to be updated using the data in the following spreadsheet
NewEmployeeAccessData
(ID, MasterID, AccessID1, LoginID1)
There is a 1:1 relationship between the two tables..I'm trying to code a pair of update statements on the EmployeeAccess table (1 for LoginID, 1 for AccessID) with the following logic:
If LoginID is NULL, then Update LoginID with new LoginID1 value,
If LoginID is not null, and Storage1 is NULL then Update Storage1 with New LoginID1 values
If LoginID is not null, and Storage1 is not NULL and Storage2 is NULL then Update Storage2 with New LoginID1 values
etc etc...
The same applies when trying to populate the AccessID column
If AccessID is NULL, then Update AccessID with new AccessID1 value,
If AccessID is not null, and Storage1 is NULL then Update Storage1 with New AccessID1 values
If AccessID is not null, and Storage1 is not NULL and Storage2 is NULL then Update Storage2 with New AccessID1 values
etc etc.
I have no control over the schema of this table so I'm trying to work the logic on how to update the columns in my table only if the corresponding column data is NULL, else update the next non NULL Storage column.
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Oct 19, 2015
how to do a check for 2 columns. As long as there is data for at least one of the columns I want to return rows.
Example Data
create table test
(
ID int,
set1 varchar(50),
set2 varchar(50),
[code]....
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Oct 21, 2015
In our production database we are looking top 10 columns in all the tables, for this using the below script, output was showing only one table how we get the all the tables top 10 ...
select top 10 * from ProductIdList
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Oct 26, 2015
I have two temp. tables. I am trying to show the agents how makes the sales and the ones how didnt make sales based on the time that they clock in. One table is called #sales which has only the agents that make sales and other tables is #hours which has both agents that do not make sale. the problem is that I can not get both agents to show on my report. I tried different ways but I could not. #sales table uses (select statement from AmountStats table that stores only the agents who make sale). #hours table uses different tables to store all gents who makes sale and ones that are not making sale.
declare
@start datetime,
@end datetime,
@campaignId uniqueidentifier,
@campaignName varchar(250),
@segment varchar(50)
set @start = '2015-10-07'
set @end = '2015-10-20'
[code]....
how to merge these two columns from #sales and #hours tables without duplication.
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May 4, 2015
There are two tables
TABLE 1 (NAME - Groupseats)
id session course groupcode sub1 sub2 sub3
1 2015 ba1 137 HL EL Eco
2 2015 ba1 138 EL SL HS
3 2015 ba1 139 SL EL His
From this table i use to admit a student and select their choice of group simultaneously all the subjects associated with GROUP is save on another table.
Here is the TABLE 2 Structure and sample data:
table 2 (NAME - tblstudetail)
id studentID session course sub1 sub2 sub3
1 15120001 2015 ba1 EL SL HS
2 15120002 2015 ba1 HL EL Eco
3 15120003 2015 ba1 SL EL His
4 15120004 2015 ba1 HL EL Eco
AND so no..........................
Now i just want to COUNT the Number of Groups Filled in tblStudateil.
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Oct 12, 2015
I have a Problem with my SQL Statement.I try to insert different Columns from different Tables into one new Table. Unfortunately my Statement doesn't do this.
If object_ID(N'Bezeichnungen') is not NULL
Drop table Bezeichnungen;
GO
create table Bezeichnungen
(
Artikelnummer nvarchar(18),
Artikelbezeichnung nvarchar(80),
Artikelgruppe nvarchar(13),
[code]...
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Nov 16, 2015
For our ETL process, we maintain a TransformationList table that has the source view and the destination table. Data is copied from the view into the table (INSERT INTO). I am trying to find column names in the Views that are not column names in the associated Table.
In the below example, want to end up with three records:
1, View1, Column4
2, View2, Column4
2, View2, Column5
I have it almost working, except that there is a table, ChangeColPrefix table, that is used by the ETL process to change some of the view's column name prefixes. Some of the source views have column names with prefixes that do not match the destination table column names. Say view SouthBase has all the column names prefixed with SB - like SBAcct, SBName. And the Destination table of Area District has ADAcct, ADName. There would be a row in the ChangeColPrefix for SouthBase, SB, AD, 1, 2 that would be used by the ETL process to create the INSERT INTO Area District From SouthBase.
I need to use this ChangeColPreifx to find my unmatching columns between my source views and destination tables. With out that table SBAcct and SBName from SouthBase will not appear to match the columns of ADAcct and ADName, but they do match.
I want to end up with these three records as non-matching:
View1, Column4
View2, Column4
View2, Column5
View1 has Salumn2 and View2 has Salumn5, and they must be changed to Column2 and Column5 as per the ChangeColPrefix table before running the Select from INFORMATION_SCHEMA.COLUMNS EXCEPT Select from INFORMATION_SCHEMA.COLUMNS looking for unmatched columns.
/***** Set Up Test Data *****/
-- Create 2 test views
IF EXISTS(SELECT * FROM sys.views WHERE object_id = OBJECT_ID(N'[dbo].[View1]'))
DROP VIEW dbo.[View1]
GO
CREATE VIEW View1
AS SELECT '1' AS Column1 , '2' AS Salumn2 , '4' AS Column4;
[Code] ....
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Nov 2, 2006
I have two tables with the same structure / different data. I run a query between the tables to find the different records for the out put. When the values of the records or NULL, I do not get the output.
Code:
SELECT dbo.Closest3StoresB_RBT.CustomerPost, dbo.Closest3StoresB_RBT.ClosestStore1,
dbo.Closest3StoresB_RBT.ClosestStore2,
dbo.Closest3StoresB_RBT.ClosestStore3
FROM dbo.Closest3StoresB_RBT INNER JOIN
dbo.Closest3StoresB_OLD_RBT ON dbo.Closest3StoresB_OLD_RBT.CustomerPost =
dbo.Closest3StoresB_RBT.CustomerPost
WHERE
(dbo.Closest3StoresB_OLD_RBT.ClosestStore1 <> dbo.Closest3StoresB_RBT.ClosestStore1) OR
(dbo.Closest3StoresB_OLD_RBT.ClosestStore2 <> dbo.Closest3StoresB_RBT.ClosestStore2) OR
(dbo.Closest3StoresB_OLD_RBT.ClosestStore3 <> dbo.Closest3StoresB_RBT.ClosestStore3)
CustomerPost | ClosestStore1 | ClosestStore2 | ClosestStore3
I want to avoid seting the NULL values to '0' . Any suggestions?
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Jun 3, 2008
Hi all,
Below are my tables:
Rowid
Name
1
John
2
Peter
3
Jack Table
Rowid
Rowid1
1
1
1
2
1
3
2
1
2
2
3
2
3
3 Table1
Rowid1
Country
1
USA
2
UK
3
JAPAN Table2
I tried to get the Country for all the people in the first table.
My SQL statement is: SELECT Table.Name, Table2.Country FROM Table Left Join Table1 ON Table.Rowid = Table1.Rowid Left Join Table2 ON Table1.Rowid1 = Table2.Rowid1
My final result is shown on Table2. But is it possible if I can generate the results without the duplicate Names (as shown below)?
Name
Country
John
USA
UK
JAPAN
Peter
USA
UK
Jack
UK
JAPAN
Any advice will much appreciated.
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May 8, 2001
Hi , I need to compare two date fields in two different tables.One of the field is varchar(8) and other is dateime.When there is a date in one field and NULL in other field , how do I compare these two vales?
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Apr 20, 2006
Hi, I have the following query
SELECT *
FROM PABX
INNER JOIN LOGIN ON (PABX.COD_CLIENTE = LOGIN.COD_CLIENTE)
AND LEFT(LOGIN.TELEFONE1,3) = LEFT(PABX.NRTELEFONE,3)
LEFT JOIN AUXILIAR ON (AUXILIAR.ORIGEM=LOGIN.LOCALIDADE)
WHERE
pabx.COD_cliente = 224 and
SUBSTRING(PABX.NRTELEFONE,4,1) NOT IN ('9', '8', '7')
AND LOGIN.UF = RIGHT(PABX.LOCALIDADE,2)
AND LOGIN.LOCALIDADE <> PABX.LOCALIDADE
AND PABX.CLASSIFICA IS NULL
AND PABX.LOCALIDADE <> AUXILIAR.DESTINO
AND (BLOQUEADO = 0 OR BLOQUEADO IS NULL)
But It has a problem because when AUXILIAR.DESTINO returns null (it means there is no registry) the condition AND PABX.LOCALIDADE <> AUXILIAR.DESTINO doesn't work, like 'SAO PAULO' is different from 'NULL' but for my query no it's not even equal, and this condition ommit the results....how can I solve it ?
PS: Both auxiliar.destino and pabx.localidade is varchar(255)
Thanks
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May 26, 2007
I want to copy FirstName and LastName cells from table1 to table2. Which FirstName and LastName cells depend on the username, i.e. which person has logged in.
Q1) How can this be done? (I have chosen to SELECT from Table1 and output to variables (C# code); then INSERT these variables into Table2. [Finding it very difficult]).
Any suggestions/comments would be appreciated. Thank you in advance.
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Aug 25, 2007
Hello! I have a field "End" in my database that is mapped as DateTime and allows nulls. Now I want to do a SQL-Select (in a SqlDataSource) like SELECT * FROM My_Table Where (([End] = @EndDate) OR ([End] = null)) @EndDate is a valid DateTime, but the second OR condition doesn't work. What is the best way to check if the [End]-field is empty or null? Thank you very much!
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Aug 4, 2015
I have a date comparison situation in which I will have a column with a date and will have another value containing a GETDATE() minus two weeks. I want to be able to compare both dates and get the MIN date between the two. I'm not sure how to use the MIN(Date) in this scenario since the comparison won't be between two different columns, but between one column and a random date generated by the GETDATE() minus two weeks.
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Jan 2, 2008
I have two spreadsheets in excell. There are 3000 numbers on one sheet, and there are 900 numbers on the other sheet. I want to know which numbers overlap and either somehow flag the overlaping numbers on both sheets or create a third sheet that just contains the numbers that exist in both. Is there some straightforward set of function comands in excel to do this?
Thanks for any help.
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Oct 27, 2015
We have a case where in we should show date based on conditions for e.g if we had a column defined as
col varchar(10) then we would show col as 'NULL' for some condition and actual value when no condition
Normaly date values are stored here e.g under col 20150901 .
Case
when col>'20150901' then 'NULL'
else col
end as Derivedcol
Note this is an extract process and we are presenting data by pumping the data in a table .
Now there is another similar column -colz varchar(10) which stores date but doesnt have case condition so whenever date has no value its shows null which is database null.
So whats the difference between database null and string null ?
How can we show database null for the case condition instead of string "null"?
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Nov 21, 2014
SET NOCOUNT ON;
IF OBJECT_ID('dbo.TBL_SAMPLE_DATA') IS NOT NULL DROP TABLE dbo.TBL_SAMPLE_DATA;
CREATE TABLE dbo.TBL_SAMPLE_DATA
(
ROW_ID INT IDENTITY(1,1) PRIMARY KEY CLUSTERED NOT NULL
,Airline VARCHAR(50) NOT NULL
[Code] ....
I have to compare the Aircraft1 and Aircraft1_unsub based on condition as below:
[case
when Aircraft1='N' or Aircraft1_unsub='Y' then 0
else 1
end ]
Based on the comparision output i have to update the main table with the outputvalue for each Aircraft based on the Airline
update t set t.Aircraft1=outputvalue
from main_table t
inner join TBL_SAMPLE_DATA s
on t.Airline=s.Airline
update t set t.Aircraft2=outputvalue
from main_table t
inner join TBL_SAMPLE_DATA s
on t.Airline=s.Airline
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Nov 20, 2015
I have this 40,000,000 rows table... I am trying to clean this 'Contacts' table since I know there are a lot of duplicates.
At first, I wanted to get a count of how many there are.
I need to compare records where these fields are matched:
MATCHED: (email, firstname) but not MATCH: (lastname, phone, mobile).
MATCHED: (email, firstname, mobile)
But not MATCH: (lastname, phone)
MATCHED: (email, firstname, lastname)
But not MATCH: (phone, mobile)
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Aug 21, 2015
I have a scenario to compare previous records based on each ID columns. For each ID, there would be few records, I have a column called "compare", We have to compare all Compare 1 records with Compare 0 Records. If Dt is lesser or equal to comparing DT, then show 0. Else 1
We always only one Compare 0 records in my table, so all compare 1 columns will compare with only one row per ID
My tables look like
Declare @tab1 table (ID Varchar(3), Dt Date, Compare Int)
Insert Into @tab1 values ('101','2015-07-01',0)
Insert Into @tab1 values ('101','2015-07-02',1)
Insert Into @tab1 values ('101','2015-07-03',1)
Insert Into @tab1 values ('101','2015-07-01',1)
Insert Into @tab1 values ('101','2015-06-30',1)
Insert Into @tab1 values ('102','2015-07-01',0)
Insert Into @tab1 values ('102','2015-07-02',1)
Insert Into @tab1 values ('102','2015-07-01',1)
select * from @tab1
1.) In the above scenario for ID = '101', we have 5 records, first record has Compare value 0, which mean all other 4 records need to compare with this record only
2.) If Compare 1 record's Dt is less or equal to Compare 0's DT, then show 0 in next column
3.) If Compare 1 record's Dt is greater than Compare 0's DT, then show 1 in next column
My expected result set should be like ....
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May 3, 2001
Hi ,
I have three tables T1 , T2 AND T3. T3 is having fields as a combination of T1 and T2 fields.How can I compare T1 and T2 field values with T3 FIELD VALUES.
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Aug 2, 2004
Hi everyone,
I have 2 seperate databases and I need to check for rows that are different from each other in a table.
I used access to link the tables in a database and am using queries to check the tables. However, I am having trouble formulating the SQL. What I want to do is not just check for the ID field to see if it exists, but to make sure the whole row exists. How can I form an SQL statement for this?
I tried something like:
Select * from table1 where Column1 NOT IN (Select Column1 from Table2) AND Column2 NOT IN (Select Column2 from Table2). However, I do not think this is correct. I want to make sure that the rows are compared, not individual values.
Any help would be appreciated.
Thanks,
Pankaj
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Oct 29, 2004
IS there an easy way to compare two tables in sqlserver? I only need to display items that are different between table a and b.
thanks in advance for your help!
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Aug 24, 2007
I'm having a bit of a brain melt.
I've got two identical tables (except for the names) and I need to run a query that outputs the rows that aren't in the primary table.
To clarify table one has 38,450 records and table two has 30,703. I need to output the records that are in table one but not table two.
Everything I've tried keeps returning the records that are in it. They have a ID as primary key and a userid field which is what I want to be able to list.
Any ideas?
Thanks.
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Dec 24, 2007
How can I select records that have changed or are new when comparing a previous copy of a table with the live version of the table? There is no datetime stamp in these tables. Many thanks in advance.
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Dec 28, 2007
I need to compare two tables and update the records that have changed.
The following code works great for that:
SELECT MIN(TableName) as TableName, ID, COL1, COL2, COL3 ...
FROM
SELECT 'Table A' as TableName, A.ID, A.COL1, A.COL2, A.COL3, ...
FROM A
UNION ALL
SELECT 'Table B' as TableName, B.ID, B.COL1, B.COl2, B.COL3, ...
FROM B
) tmp
GROUP BY ID, COL1, COL2, COL3 ...
HAVING COUNT(*) = 1
ORDER BY ID
However, I also need to compare the two tables and see if there are any new records or deleted records. What would those queries look like? Can they all somehow be combined into one query?
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Mar 13, 2008
Is it possible to compare a table in an sql database with a database connected through odbc - in my case it's a dbf file.
If so, any tips? Please help as im stuck on this for the past week.
thanks,
Anthony.
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