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Message Posted: Fri, 26 Dec 2003 @ 10:54:53 GMT

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Subj:   Dynamic SQL in Tera data
From:   Sukanya_banik

Hi All,

I have a teradata related problem. I have a table with approx 300 columns. I need to check the following

SELECT count (*) from abc where abc.a = null

The problem is that i have to do this operation for all the columns in the table.

This was easy in Oracle with the help of DD views. Something like

   cursor cur is
   select column_name from user_tab_columns where table_name ='abc';
   sqlstr varchar2(100);
   temp number;


   for c in cur
   sqlstr := 'select count (*) into temp from abc where' c.column_name '=null';
   exec sqlstr;
   dbms_output.put_line 'count = ' temp ;
   end loop;

   end ;

Is this kind of a DD operation supported in Teradata .. ?? Is there some metadata repository in Teradata ?? I want some kind of a script that wud enable me to do this instead of running the query 300 times.

I have found out the Data Dictionary view in Teradata similar to user_tab_columns in Oracle. But in the above script i wud need to use the Dynamic SQL as in Oracle. Is there a similar feature in Teradata ? If yes, then pls let me know how to use it in the abve context. Or if there are any tools to support my task mentioned above.

Pls let me know



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