16.20 - Example: Non-Valid MODIFY PRIMARY INDEX Statements - Teradata Database - Teradata Vantage NewSQL Engine

The following requests are not valid. These examples do not specify options that alter the table.

     ALTER TABLE orders 
     MODIFY PRIMARY INDEX;
    
     ALTER TABLE orders 
     MODIFY NOT UNIQUE PRIMARY INDEX;

The next example attempts to alter the table not to have a primary index and to add column and row partitioning. The request uses correct syntax but is not valid because orders is populated with rows.

     ALTER TABLE orders 
     MODIFY NO PRIMARY INDEX 
     PARTITION BY (COLUMN ADD 5,
                   RANGE_N(o_ordertsz BETWEEN TIMESTAMP 
                                      '2003-01-01 00:00:00.000000+00:00'
                                      AND     TIMESTAMP 
                                      '2009-12-31 23:59:59.999999+00:00' 
                                      EACH INTERVAL '1' MONTH) );