Very good article on Analytical functions -
http://orafaq.com/node/55
Wednesday, June 29, 2011
Wednesday, June 22, 2011
Friday, April 1, 2011
BI Applications: DB links and Getting DDL from sqlplus
BI Applications: DB links and Getting DDL from sqlplus: "DB link create Syntax - CREATE DATABASE LINK dblink_name CONNECT TO user IDENTIFIED BY pwd USING '(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP..."
Wednesday, March 23, 2011
BI Applications: UNSPSC
BI Applications: UNSPSC: "To be frank I had thought UNSPSC to be Unspecified. Later I realized its a standard or a convention used to classify all products and servic..."
Monday, March 14, 2011
BI Applications: Overrides in Informatica
BI Applications: Overrides in Informatica: "Few points regarding overrides in INFA - Source Qualifier Override - 1. The number of columns in the SQ query should match with the numbe..."
Tuesday, January 18, 2011
BI Applications: Configuring INFA Connections in DAC
BI Applications: Configuring INFA Connections in DAC: "Configuring the physical connections can be quiet daunting for Informatica DW server and REP server. First - Provide all the details in Set..."
Friday, December 31, 2010
BI Applications: Privileges within a PLSQL procedure
BI Applications: Privileges within a PLSQL procedure: "Oracle expects that we mention explicitly what kind of privileges the PLSQL procedure has. If we do not specify it properly there are chance..."
BI Applications: Accessing Table Names of other Schemas
BI Applications: Accessing Table Names of other Schemas: "Many times we would want to select the table names from another schema. In such cases below SELECT would help.. select TABLE_NAME FROM ALL_..."
Thursday, December 2, 2010
BI Applications: Database Character Set of a DB
BI Applications: Database Character Set of a DB: "This query will help in finding the database character set of an oracle db. Select value from SYS.NLS_DATABASE_PARAMETERS where PARAMETER =..."
Monday, November 15, 2010
BI Applications: Difference Between COALESCE and NVL
BI Applications: Difference Between COALESCE and NVL: "COALESCE and NVL are used to achieve the same functionality of providing a default value in case the column returns a NULL. The differences..."
Monday, September 13, 2010
BI Applications: Rows to columns and Columns to Rows in Oracle
BI Applications: Rows to columns and Columns to Rows in Oracle: "Many a times we need to display data in different ways. Multiple rows in table need to be displayed as columns and vice-verse. The below li..."
BI Applications: TO_CHAR(date column) returns zero
BI Applications: TO_CHAR(date column) returns zero: "In Oracle Database we face this issue sometimes. We see that Date field contains all zeros Example - select to_char(Date_column,'dd-mm-yyyy ..."
Wednesday, September 8, 2010
BI Applications: Debug the Debugger of INFA
BI Applications: Debug the Debugger of INFA: "Many times we face issues while using the debugger feature of Informatica. We get error saying 'Error connecting to DTM Service' There are..."
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