topic How to determine number of rows in a MS Access table in SAS Programming

How to determine number of rows in a MS Access table

PaigeMiller — Thu, 14 Nov 2013 20:00:16 GMT

I want my SAS program to query a MS Access table and determine the number of rows in the table. How can I do this?

I have a macro that works well on SAS data sets, using the ATTRN function; but this returns a -1 for MS Access tables, and according to the docs for ATTRN, a -1 means that the number of rows is not available.

I suppose I could write a program that copies the entire table to a SAS data set, but if the MS Access table is huge, this is requires a lot of time to accomplish the task.

Re: How to determine number of rows in a MS Access table

jakarman — Thu, 14 Nov 2013 20:56:21 GMT

It should be possible as ms-access is having that type of information. http://msdn.microsoft.com/en-us/library/office/bb208624(v=office.12).aspx

Perhahps the special odbc queries SAS/ACCESS(R) 9.3 for Relational Databases: Reference, Second Edition are working

perhaps ....

Re: How to determine number of rows in a MS Access table

ballardw — Thu, 14 Nov 2013 21:00:12 GMT

Does the Access table appear in dictionary.tables?

Proc sql;

select nobs

from dictionary.tables where libname='LIBRARY' and memname='TABLENAME';

quit;

might work.

Re: How to determine number of rows in a MS Access table

PaigeMiller — Thu, 14 Nov 2013 21:02:21 GMT

Yes, it appears in the dictionary tables, but the column in the dictionary table that contains the number of rows is missing for MS Acess tables.

Re: How to determine number of rows in a MS Access table

SASKiwi — Thu, 14 Nov 2013 22:47:43 GMT

A generic solution would be just to use SQL:

select count(*) from MS_ACCESS_Table

Re: How to determine number of rows in a MS Access table

PaigeMiller — Fri, 15 Nov 2013 12:54:59 GMT

Thanks, SASKiwi, that works.

I did not know you could use a structure such as count(*), I thought you had to specify a variable name.

Re: How to determine number of rows in a MS Access table

jakarman — Fri, 15 Nov 2013 16:25:38 GMT

I did not know you diid not know you could do SQL to MS-SQL-access. I was thinking you were asking could do SQL and behaving like a DBMS.

SQL COUNT() Function (w3schools.com) it is showing a lot more functionality as just the count. A lot o them will work.