Netezza

Netezza User rowset Limit: Limiting Query Result set

If you execute the query which returns a large result set, then system may crash or may not respond properly. You can set the Netezza user rowset limit during query run. You can set a limit on the number of rows a query can return and thus restrict resources for large result sets. Read: How Netezza Update Records in Table? IBM Netezza Update Join Netezza Pivot  Rows to Column with Example Netezza nzsql Command and its Usage Create Table Command and its Usage Netezza Alter Table Command and its Usage…

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February 16, 2017
Netezza

Netezza Delete Join Syntax – Deleting Referring other Table

Every application requires the data, data storage is very much important. In the digital world, we use databases (in-fact tables) to store information. Data is collected over the time and it may or may not be accurate. In some cases, you may want to delete data from the table based on the data available in other table over same or other database on same Netezza server. You cannot access the table stored on other Netezza server. In this article, we have explained the Netezza delete join syntax and example on…

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February 16, 2017
Netezza

Netezza Planners: Different types of Planners

Netezza planners are very important to improve the performance of the query that you fire onto Netezza performance server. Types of Netezza Planners There are different types planners that Netezza performance server uses: The Fact Relationship (factrel) planner Snowflake planner The Star planner The Fact Relationship (factrel) planner The Fact Relation Planner is a feature used to prevent large table re-distribution i.e. costly re-distribution or broadcasting of fact data when other alternatives may exist. Read: Data warehouse Star schema and Design Analyze and Optimize Netezza Query Performance Netezza Best Performance…

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February 14, 2017
Redshift

Amazon Redshift DBFit Connection File and Setup

For Data Warehouse developer, DBFit is a neat unit – testing tool for database objects and stored procedures. This tool allows you to write the test cases in a tabular, relational form, without requiring you to learn or use an object oriented language. In this article, we will discuss about the Amazon Redshift DBFit connection and setup. Please comment if you need anything to be added or missing. Read: Netezza Aginity Setup and Configurations Netezza ODBC setup Resolution: Amazon Redshift Drop and Truncate Table Running Slow Redshift Install SSL Certificate…

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February 11, 2017
Netezza

Netezza DBFit Connection File and Setup

For Data Warehouse developer, DBFit is a neat unit – testing tool for database objects and stored procedures. This tool allows you to write the test cases in a tabular, relational form, without requiring you to learn or use an object oriented language. In this article, we will discuss about the Netezza DBFit connection and setup. Please comment if you need anything to be added or missing. Read: Netezza Aginity Setup and Configurations Netezza ODBC setup Create Netezza DBFit Connection File The DB conn file will contain all the necessary…

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February 11, 2017
Netezza

Netezza Update Join Syntax – Update using other Table

Every application that require the data; data storage is very much important. In the digital world, we use databases (in fact tables) to store information. Data is collected over the time and it may or may not be accurate. In some cases you may want to update the table based on the data available in other table over same or other database on same server. In this article, we have explained the Netezza Update Join Syntax and example on how to update using Data in other Table. Read: How Netezza…

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February 9, 2017
Netezza

Netezza Organize On Syntax and Examples

The Netezza Organize on is one of important feature introduced in the Netezza data warehouse appliance. With the help of Organize on keys, you can create the clustered base tables (CBT). You can specify up to four columns in organize on key. Read: Cluster Based Tables - CBT Netezza TwinFin Architecture IBM Netezza nzsql Command and its Usage Netezza ALTER TABLE Command Netezza Organize On Keys IBM Netezza Organizing keys are useful for the more frequently used columns that you specify as keys are used in query predicates, alone or in…

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February 9, 2017
Netezza

Netezza nzstats Command and Usage

The Netezza nzstats command allows you to view sets of related operational information that is, statistics on the tables. These sets are organised as groups of related statistics or tables that contain rows of related statistics. The statics are very much important in Netezza appliances. System uses the up-to-date stat information to plan and execute the queries. Netezza appliance works better if the system catalog tables have up-to-date stats. Displaying System Statistics using Netezza nzstats Command The Netezza nzstats command displays operational statistics about system capacity, system faults, and system…

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January 24, 2017
Netezza

Netezza nzsql Windows System Exit Codes

In this article, Netezza nzsql Windows system exit codes are discussed. These exit codes are very much important when you are building ETL/ELT operation or executing nzsql commands on windows systems. From a Windows system command prompt, the exit codes from the nzsql command provide information about the execution status of the SQL commands. Read: Netezza nzsql exit codes for Unix/Linux Systems Netezza nzsql commands and is Usage Netezza SET ON_ERROR_STOP and Examples Netezza nzsql Windows System Exit Codes When you are running queries interactively at the nzsql prompt or…

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December 30, 2016
Netezza

Netezza nzsql Exit Codes for UNIX/Linux Systems

In this article, Netezza nzsql exit codes are discussed. These exit codes are very much important when you are building ETL/ELT operation using shell scripts. On UNIX/Linux systems such as the NPS, the Netezza nzsql exit codes provide information about the execution status of the SQL commands. Read: Netezza nzsql Command and its Usage Netezza SET ON_ERROR_STOP and Examples Netezza nzsql Exit Codes When you are running queries interactively at the nzsql prompt or by using a script (nzsql -f), the command returns one of the following exit codes: 0:…

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December 30, 2016