Does Rownum and Rowid works in SQL Server

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Does Rownum and Rowid works in SQL Server

sunilchand

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May 7, 2018 at 3:41 am

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Hello Guys ..want to know if rowid and rounum works in sql server too ? if not what are the equivalent of these two concept in sql server.
i was running following query SELECT * FROM EmployeeTest WHERE rownum=1 but it fails and showing following error Msg 207, Level 16, State 1, Line 1
Invalid column name 'rownum'.

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Eirikur Eiriksson SSC Guru Points: 182901 More actions · Answer 1

sunilchand - Monday, May 7, 2018 3:41 AM
Hello Guys ..want to know if rowid and rounum works in sql server too ? if not what are the equivalent of these two concept in sql server.
i was running following query SELECT * FROM EmployeeTest WHERE rownum=1 but it fails and showing following error Msg 207, Level 16, State 1, Line 1
Invalid column name 'rownum'.

Neither ROWNUM nor ROWID exist on SQL Server, there is an undocumented row identifier, suggest you have a look at SQL Server 2008: New (undocumented) physical row locator function By Paul Randal
😎

saravanatn SSCarpal Tunnel Points: 4533 More actions · Answer 2

sunilchand - Monday, May 7, 2018 3:41 AM
Hello Guys ..want to know if rowid and rounum works in sql server too ? if not what are the equivalent of these two concept in sql server.
i was running following query SELECT * FROM EmployeeTest WHERE rownum=1 but it fails and showing following error Msg 207, Level 16, State 1, Line 1
Invalid column name 'rownum'.

Is this what you mean???
CREATE TABLE EMP (EMPID int , SALARY INT); INSERT INTO EMP VALUES (1,20000); INSERT INTO EMP VALUES (2,30000); INSERT INTO EMP VALUES (3,40000);
----------------
SELECT * FROM (SELECT EMPID,SALARY,ROW_NUMBER() OVER(ORDER BY SALARY DESC) AS SAL FROM EMP)A WHERE SAL=1

Saravanan

Eirikur Eiriksson SSC Guru Points: 182901 More actions · Answer 3

saravanatn - Monday, May 7, 2018 5:47 AM
sunilchand - Monday, May 7, 2018 3:41 AM
Hello Guys ..want to know if rowid and rounum works in sql server too ? if not what are the equivalent of these two concept in sql server.
i was running following query SELECT * FROM EmployeeTest WHERE rownum=1 but it fails and showing following error Msg 207, Level 16, State 1, Line 1
Invalid column name 'rownum'.
Is this what you mean???
CREATE TABLE EMP (EMPID int , SALARY INT); INSERT INTO EMP VALUES (1,20000); INSERT INTO EMP VALUES (2,30000); INSERT INTO EMP VALUES (3,40000);
----------------
SELECT * FROM (SELECT EMPID,SALARY,ROW_NUMBER() OVER(ORDER BY SALARY DESC) AS SAL FROM EMP)A WHERE SAL=1

ROWNUM and ROWID are pseudocolumns in Oracle, ROW_NUMBER is a windowing function implemented on SQL Server and quit few other RDBMSs.
😎

Ed Wagner SSC Guru Points: 287026 More actions · Answer 4

If I'm interpreting this correctly, you're asking about the equivalent of Oracle's rownum "pseudo-column" for lack of a better term. The TOP clause is what you want. Example:

SELECT TOP 1 * FROM dbo.EmployeeTest ORDER BY ID;

The ORDER BY clause is important here because without it, you can't be sure of which row you'll get back.

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sunilchand Mr or Mrs. 500 Points: 507 More actions · Answer 5

saravanatn - Monday, May 7, 2018 5:47 AM
sunilchand - Monday, May 7, 2018 3:41 AM
Hello Guys ..want to know if rowid and rounum works in sql server too ? if not what are the equivalent of these two concept in sql server.
i was running following query SELECT * FROM EmployeeTest WHERE rownum=1 but it fails and showing following error Msg 207, Level 16, State 1, Line 1
Invalid column name 'rownum'.
Is this what you mean???
CREATE TABLE EMP (EMPID int , SALARY INT); INSERT INTO EMP VALUES (1,20000); INSERT INTO EMP VALUES (2,30000); INSERT INTO EMP VALUES (3,40000);
----------------
SELECT * FROM (SELECT EMPID,SALARY,ROW_NUMBER() OVER(ORDER BY SALARY DESC) AS SAL FROM EMP)A WHERE SAL=1

No Dear ... I want to print first row of any table with rownum and rowid like we do in Oracle .Please refer following link to have more idea.Thanks

sunilchand Mr or Mrs. 500 Points: 507 More actions · Answer 6

Ed Wagner - Monday, May 7, 2018 5:59 AM
If I'm interpreting this correctly, you're asking about the equivalent of Oracle's rownum "pseudo-column" for lack of a better term. The TOP clause is what you want. Example:
SELECT TOP 1 * FROM dbo.EmployeeTest ORDER BY ID;
The ORDER BY clause is important here because without it, you can't be sure of which row you'll get back.

Is that ID is primary key ??

saravanatn SSCarpal Tunnel Points: 4533 More actions · Answer 7

sunilchand - Monday, May 7, 2018 6:18 AM
saravanatn - Monday, May 7, 2018 5:47 AM
sunilchand - Monday, May 7, 2018 3:41 AM
Hello Guys ..want to know if rowid and rounum works in sql server too ? if not what are the equivalent of these two concept in sql server.
i was running following query SELECT * FROM EmployeeTest WHERE rownum=1 but it fails and showing following error Msg 207, Level 16, State 1, Line 1
Invalid column name 'rownum'.
Is this what you mean???
CREATE TABLE EMP (EMPID int , SALARY INT); INSERT INTO EMP VALUES (1,20000); INSERT INTO EMP VALUES (2,30000); INSERT INTO EMP VALUES (3,40000);
----------------
SELECT * FROM (SELECT EMPID,SALARY,ROW_NUMBER() OVER(ORDER BY SALARY DESC) AS SAL FROM EMP)A WHERE SAL=1
No Dear ... I want to print first row of any table with rownum and rowid like we do in Oracle .Please refer following link to have more idea.Thanks

Look @ this useful link:

https://www.sqlservercentral.com/Forums/784501/equivalent-for-rownum

Saravanan

saravanatn SSCarpal Tunnel Points: 4533 More actions · Answer 8

Eirikur Eiriksson - Monday, May 7, 2018 5:58 AM
saravanatn - Monday, May 7, 2018 5:47 AM
sunilchand - Monday, May 7, 2018 3:41 AM
Hello Guys ..want to know if rowid and rounum works in sql server too ? if not what are the equivalent of these two concept in sql server.
i was running following query SELECT * FROM EmployeeTest WHERE rownum=1 but it fails and showing following error Msg 207, Level 16, State 1, Line 1
Invalid column name 'rownum'.
Is this what you mean???
CREATE TABLE EMP (EMPID int , SALARY INT); INSERT INTO EMP VALUES (1,20000); INSERT INTO EMP VALUES (2,30000); INSERT INTO EMP VALUES (3,40000);
----------------
SELECT * FROM (SELECT EMPID,SALARY,ROW_NUMBER() OVER(ORDER BY SALARY DESC) AS SAL FROM EMP)A WHERE SAL=1
ROWNUM and ROWID are pseudocolumns in Oracle, ROW_NUMBER is a windowing function implemented on SQL Server and quit few other RDBMSs.
😎

Thanks for explaining the difference Eirikur Eiriksson

Saravanan

Ed Wagner SSC Guru Points: 287026 More actions · Answer 9

sunilchand - Monday, May 7, 2018 6:23 AM
Ed Wagner - Monday, May 7, 2018 5:59 AM
If I'm interpreting this correctly, you're asking about the equivalent of Oracle's rownum "pseudo-column" for lack of a better term. The TOP clause is what you want. Example:
SELECT TOP 1 * FROM dbo.EmployeeTest ORDER BY ID;
The ORDER BY clause is important here because without it, you can't be sure of which row you'll get back.
Is that ID is primary key ??

In my example, yes, but you can ORDER BY whatever column to want. It'll determine which row is returned.

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Joe Torre SSChampion Points: 10248 More actions · Answer 10

Also in SQL Server 2012 they introduced OFFSET so in SQL Server 2012+ you can use.
CREATE TABLE EMP (EMPID int , SALARY INT); INSERT INTO EMP VALUES (1,20000); INSERT INTO EMP VALUES (2,30000); INSERT INTO EMP VALUES (3,40000); SELECT e.EMPID , e.SALARY FROM dbo.EMP e ORDER BY e.SALARY DESC OFFSET 0 ROWS FETCH NEXT 1 ROW ONLY; DROP TABLE emp;