Oracle-L: RE: Dynamic select query

From: Ofer Harel <oharel_at_barak013.net.il>
Date: Tue, 17 Dec 2002 03:28:46 -0800
Message-ID: <F001.0051AFEA.20021217032846@fatcity.com>

You should use the INSTR function

INSTR(string,substring,[position],[occurrence])

INSTR searches string for substring.
position is an integer indicating the character of string where Oracle begins the search. If position is negative, Oracle counts and searches backward from the end of string.
occurrence is an integer indicating which occurrence of string Oracle should search for. The value of occurrence must be positive. The function returns an integer indicating the position of the character in string that is the first character of this occurrence. The default values of both position and occurrence are 1, meaning Oracle begins searching at the first character of string for the first occurrence of substring. The return value is relative to the beginning of string, regardless of the value of position, and is expressed in characters. If the search is unsuccessful (if substring does not appear occurrence times after the position character of string) the return value is 0.

Examples:
SELECT INSTR('CORPORATE FLOOR','OR', 3, 2) "Instring" FROM DUAL;

Instring

select *
from shipment
where instr(ship_name,ship_id)>0;

HTH
regards

Ofer Harel
DBA team
Barak ITC
oharel_at_barak013.net.il

-----Original Message-----
[mailto:Ranganath.Krishnaswamy_at_blr.hpsglobal.com] Sent: Tuesday, December 17, 2002 12:39 PM To: Multiple recipients of list ORACLE-L

Hi all,

I have a table by name shipment with two columns say ship_id and ship_name and data as follows:

SHIP_ID	SHIP_NAME
------------- 	-------------------
ABC 		1ABCLMN
XYZ 		23XYZ1112
ABB 		123LM

	I want to select all the columns in shipment table which has ship_id

as string in the ship_name column. For example, ship_id 'ABC' is present in '1ABCLMN'. So that record should be selected. The ship_id string may start from any position and end at any position in ship_name column. So I cannot use the substr function in this case. How do I write the select clause for this requirement?

Any help in this regard is very much appreciated.

Thanks and Regards,

Ranganath
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Author: Krishnaswamy, Ranganath
INET: Ranganath.Krishnaswamy_at_blr.hpsglobal.com

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Author: Ofer Harel
INET: oharel_at_barak013.net.il

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