Netezza / PureData – Substring Function Example

The function Substring (SUBSTR) in Netezza PureData provides the capability to parse character type fields based on position within a character string.

Substring Functions Basic Syntax

SUBSTRING Function Syntax

SUBSTRING(<<CharacterField>>,<< StartingPosition integer>>, <<for Number of characters Integer–optional>>)

SUBSTR Function Syntax

SUBSTR((<>,<< StartingPosition integer>>, <>)

Example Substring SQL

Substring SQL Used In Example

SELECT  LOCATIONTEXT

— From the Left Of the String

—

— Using SUBSTRING Function

,’==SUBSTRING From the Left==’ as Divider1

,SUBSTRING(LOCATIONTEXT,1,5) as Beggining_Using_SUBSTRING_LFT

,SUBSTRING(LOCATIONTEXT,7,6) as Middle_Using_SUBSTRING_LFT

,SUBSTRING(LOCATIONTEXT,15) as End_Using_SUBSTRING_LFT

,’==SUBSTR From the Left==’ as Divider2

—Using SUBSTR Function

,SUBSTR(LOCATIONTEXT,1,5) as Beggining_Using_SUBSTR_LFT

,SUBSTR(LOCATIONTEXT,7,6) as Middle_Using_SUBSTR_LFT

,SUBSTR(LOCATIONTEXT,15) as End_Using_SUBSTR_LFT

—

— From the right of the String

—

,’==SUBSTRING From the Right==’ as Divider3

,SUBSTRING(LOCATIONTEXT,LENGTH(LOCATIONTEXT)-18, 8) as Beggining_Using_SUBSTRING_RGT

,SUBSTRING(LOCATIONTEXT,LENGTH(LOCATIONTEXT)-9, 6) as Middle_Using_SUBSTRING_RGT

,SUBSTRING(LOCATIONTEXT,LENGTH(LOCATIONTEXT)-1) as End_Using_SUBSTRING_RGT

,’==SUBSTR From the right==’ as Divider4

,SUBSTR(LOCATIONTEXT,LENGTH(LOCATIONTEXT)-18, 8) as Beggining_Using_SUBSTR_RGT

,SUBSTR(LOCATIONTEXT,LENGTH(LOCATIONTEXT)-9, 6) as Middle_Using_SUBSTR_RGT

,SUBSTR(LOCATIONTEXT,LENGTH(LOCATIONTEXT)-1) as End_Using_SUBSTR_RGT

FROM BLOG.D_ZIPCODE

where STATE = ‘PR’

AND CITY = ‘REPTO ROBLES’;

IBM Knowledge Center, PureData System for Analytics, Version 7.2.1

IBM Netezza database user documentation, Netezza SQL basics, Netezza SQL extensions, Character string functions

• https://www.ibm.com/support/knowledgecenter/SSULQD_7.2.1/com.ibm.nz.dbu.doc/r_dbuser_ntz_sql_extns_char_funcs.html

IBM Knowledge Center, PureData System for Analytics, Version 7.1.0

IBM Netezza Database User’s Guide, Netezza SQL basics, Functions and operators, Functions, Standard string functions

• https://www.ibm.com/support/knowledgecenter/en/SSULQD_7.1.0/com.ibm.nz.dbu.doc/r_dbuser_functions_expressions_string_funcs.html

IBM Knowledge Center, PureData System for Analytics, Version 7.2.1

IBM Netezza database user documentation, Netezza SQL command reference, Functions

• https://www.ibm.com/support/knowledgecenter/en/SSULQD_7.2.1/com.ibm.nz.dbu.doc/r_dbuser_functions.html