Question

Give a database (Sybase) with many tables, I would like to write a SQL query that will calculate, for each table, the number of rows and the number of columns.

Unfortunately, my SQL is a bit rusty. I can generate the table names:

select name from sysobjects where type = 'U'   

but how to bind the databases returned to T in:

select count(*) from T

is beyond me. Is it even possible to do this kind of thing?

Answer 1

I don’t use Sybase, but the online docs indicate the row counts are in systabstats and the columns are in syscolumns.

SELECT sysobjects.name, 
      (SELECT COUNT(*) FROM syscolumns WHERE syscolumns.id = sysobjects.id) AS cols,
       systabstats.rowcnt
    FROM sysobjects
    JOIN systabstats 
    ON (sysobjects.id = systabstats.id AND sysobjects.type = 'U' AND systabstats.indid = 0)