Choosing right distribution key is one of the important factor to improve the performance of Netezza server. If you have created the table with RANDOM distribution or with different column…
You cannot explicitly lock the tables in Netezza. The Netezza SQL, however, uses implicit Netezza table locking when there is a DDL operation on it. For example, drop table command…
Netezza update records operation is costlier. IBM Netezza does not perform updates, but rather does deletes the records and inserts updated values. When you run nzsql command to update record,…
Fixed width text files are special cases of text files where the format is specified by column widths, pad character and left or right alignment. In this format column width…
Netezza cross database access does allows you to execute the objects such as tables, view, synonyms that are available on the same Netezza server. You can can INSERT, UPDATE or…
Netezza Advanced Date Functions are available in Netezza SQL extensions tool kit. You have to download it from IBM fix central and install it in required database. You cannot access…
Netezza interval data types are supported in different way. Netezza accepts the interval syntax, but ignores the unit specification. All intervals are the same, and can contain values of any…
Netezza supports internal datatypes that are used by system to perform internal tasks on the table records. Netezza internal datatypes includes: rowid, transaction ID (createxid, deletexid), and dataslice. Shows Netezza…