Variable Field Divider in a VARCHAR2 column

I need to extract part of a value in a VARCHAR2(50 BYTE). The data layout is like this FIELD1/FIELD2. The position of the field divider is not always the same on all records, but the divider character is always the same. How would you suggest I can accomplish this? I only need the value in FIELD1.
Thank you in advance,
JB

Final statement... just as FYI
select substr(USER_MEMBER_NOTE1,0,((instr(USER_MEMBER_NOTE1,'/')-1)))

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Formatted Search Query for Variable field

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Denes Kubicek
http://deneskubicek.blogspot.com/
http://www.apress.com/9781430235125
http://apex.oracle.com/pls/otn/f?p=31517:1
http://www.amazon.de/Oracle-APEX-XE-Praxis/dp/3826655494
-------------------------------------------------------------------

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http://www.codeproject.com/Articles/125120/Step-by-Step-Guide-in-Developing-your-own-Workflow
Best Regards,
Pavan Kumar Sapara.
Please remember to mark your question as answered &Vote helpful,if this solves/helps your problem.
s p kumar

Storing more than 2000 characters in a varchar2 column in Oracle 11g?

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Hello Everyone,
This is probably quite simple, however I cannot see it. I am trying to sort on a varchar2 column that has numbers, text, dashes, tildes, carets and underscores which are mixed to compose a wire number. I have come up with an order by that changes the sort order from alpha to numeric satisfying one portion of the requirement.
select wirenbr,fromitem "from",frompin,diagnbr,sht,toitem,topin,effect
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order by decode(to_char(nvl(length(translate(wirenbr,'A1234567890','A')),0)),'0',lpad(wirenbr,18),wirenbr);
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2
3
20
21
200
201
1000
A
ADT1
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AE1
AE9
AFA
B
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2000A
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22X100A20
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The customer preferred sort looks like:
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2
3
10
10A
11
200
201
201-01
202
1000
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ok, start with this
order by
translate(substr(wirenbr,1,1),'1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ-','0000000000ZZZZZZZZZZZZZZZZZZZZZZZZZZZ')
, nvl(length(substr(wirenbr,1,instr(translate(wirenbr,'1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ-','1234567890XXXXXXXXXXXXXXXXXXXXXXXXXXX'),'X')-1)),length(wirenbr))
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Next, sort by the length of the first numerical part, as per Al's first solution.
Next, sort by the numerical part.
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stuff to sort by the alpha part, mine was
, NVL(RTRIM(LTRIM(wirenbr,'0123456789'),'0123456789'),0)
The biggest problem I see is all of the different number-letter-number
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I need to create a column in a view that converts a varchar2 column data to number. The problem is that some
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strings (e.g. 'ABCD') to number. What I need is to get a NULL value if the data is an invalid number.
How can I rewrite the following to get NULL value is a string is invalid number?
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thanx
Alfred

SQL> select * from test_char_num;
ALPHA_NUM
ABC
DEF
123
234
A12
SQL> select decode(NVL(length(trim(translate(alpha_num, '1234567890', ' '))), 0),
2 0, alpha_num, 'NULL') new_alpha_num
3 from test_char_num;
NEW_ALPHA_
NULL
NULL
123
234
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Range Partitioning on Varchar2 column???

We hava table and it has a date column and its type is varchar2.
This column's format is '16021013' ('ddmmyyyy').
We want to make range partition on this column. What will be the best way?
do you think virtal column partitioning will be efficient?

>
I'm not a new DBA:-) You can be sure. I asked only about range partitioning trick with varchar2 column because we did our examination about this table. We will need to archive this table quarter by quarter to the other archive database. Then, off course, nearly all queries are coming firstly by using this date column and they can have different filtering inside "where" conditions. Already, this table has index on this column but with huge number of data, index performance is not enough for us. This is a 7x24 banking system and we are lately joined to this project. Because of this, we cant change everything like changing data type of that column after this moment.
>
You are taking things way too personally. No one said anything about whether you were, or were not, a DBA or made any other comments about your skill or abilities.
What we ask was for you to tell us WHAT the problem was that you were trying to solve and WHY you thought partitioning would solve it.
And now, after several generic posts, you have finally provided that information. We can only comment based on the information that you post. We can't guess as to what types of queries you use or what kinds of predicates you use in those queries. But we need to know that information in order to provide the best advice.
Next time you post put the important information in your original question:
1. A table column is VARCHAR2 but contains a date value. We are unable to change the datatype of this column.
2. We need to archive data quarterly based on this date value
3. Nearly all queries use this date value and then also may have additional filter conditions
4. This date column is indexed but we would like to improve the performance beyond what this index can give us.
The above is a summary that includes all important information that is needed to know how best to help you.
And I made a pretty good guess since two replies ago I provided you with example code that shows just how to partition the table.
>
Now, our only aim is how to make range partitioning this varchar2 date column.
>
As I showed you in my example code earlier you can add a virtual column to the table and partition on it. My example code creates a monthly partitioned table that allows you to archive by month or archive every three months to archive by quarter.
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Format varchar2 column which stores a number and display it in 10,000 forma

Problem Description
I am having a Standard VO , which has a varchar2 datatype attribute.
In my view page i am dispaly this vo in a OATABLE.
I want to foramt one of the varchar2 column to display it in a requried format
Eg :- if the value in the column is 9999 i want to display it as 9,999.
I have tried few sources but i did not work...
I tried all the sources metioned below
OAMessageStyledTextBean arcmrecovalue1=(OAMessageStyledTextBean)oawebbean.findChildRecursive("Arcmrecovalue2");
arcmrecovalue1.setDataType("NUMBER");
arcmrecovalue1.setAttributeValue(TABULAR_FUNCTION_VALUE_ATTR,formatter);
String currency = "USD";
arcmrecovalue1.setAttributeValue(CURRENCY_CODE,currency);
arcmrecovalue1.setAttributeValue(OAWebBeanConstants.CURRENCY_CODE,"USD");;
arcmrecovalue1.setAttributeValue(*ON_SUBMIT_VALIDATER_ATTR*,*formatter*);
OAMessageStyledTextBean arcmrecovalue2=(OAMessageStyledTextBean)oawebbean.findChildRecursive("Arcmrecovalue2");
if(arcmrecovalue2 != null)
String arcmrecovalue = (String)((OAMessageStyledTextBean)oawebbean.findChildRecursive("Arcmrecovalue2")).getValue(oapagecontext);
String retValue = null;
try
OADBTransaction oadbtransaction = l_rootAM.getOADBTransaction();
String s = "{? = call convert_string(?)}";
OracleCallableStatement oraclecallablestatement = (OracleCallableStatement)oadbtransaction.createCallableStatement(s,0);
oraclecallablestatement.registerOutParameter(1,Types.VARCHAR);
oraclecallablestatement.setString(2,arcmrecovalue);
oraclecallablestatement.execute();
retValue = oraclecallablestatement.getString(1);
catch(SQLException sqlexception)
throw OAException.wrapperException(sqlexception);
catch(Exception exception)
throw OAException.wrapperException(exception);
arcmrecovalue2.setAttributeValue("Arcmrecovalue2",retValue);
* The sql function wil return the formatted string.. but it is able to format only the first value of the table.. the second row is not formatted.
Can anyone help me

Problem Description
I am having a Standard VO , which has a varchar2 datatype attribute.
In my view page i am dispaly this vo in a OATABLE.
I want to foramt one of the varchar2 column to display it in a requried format
Eg :- if the value in the column is 9999 i want to display it as 9,999.
I have tried few sources but i did not work...
I tried all the sources metioned below
OAMessageStyledTextBean arcmrecovalue1=(OAMessageStyledTextBean)oawebbean.findChildRecursive("Arcmrecovalue2");
arcmrecovalue1.setDataType("NUMBER");
arcmrecovalue1.setAttributeValue(TABULAR_FUNCTION_VALUE_ATTR,formatter);
String currency = "USD";
arcmrecovalue1.setAttributeValue(CURRENCY_CODE,currency);
arcmrecovalue1.setAttributeValue(OAWebBeanConstants.CURRENCY_CODE,"USD");;
arcmrecovalue1.setAttributeValue(*ON_SUBMIT_VALIDATER_ATTR*,*formatter*);
OAMessageStyledTextBean arcmrecovalue2=(OAMessageStyledTextBean)oawebbean.findChildRecursive("Arcmrecovalue2");
if(arcmrecovalue2 != null)
String arcmrecovalue = (String)((OAMessageStyledTextBean)oawebbean.findChildRecursive("Arcmrecovalue2")).getValue(oapagecontext);
String retValue = null;
try
OADBTransaction oadbtransaction = l_rootAM.getOADBTransaction();
String s = "{? = call convert_string(?)}";
OracleCallableStatement oraclecallablestatement = (OracleCallableStatement)oadbtransaction.createCallableStatement(s,0);
oraclecallablestatement.registerOutParameter(1,Types.VARCHAR);
oraclecallablestatement.setString(2,arcmrecovalue);
oraclecallablestatement.execute();
retValue = oraclecallablestatement.getString(1);
catch(SQLException sqlexception)
throw OAException.wrapperException(sqlexception);
catch(Exception exception)
throw OAException.wrapperException(exception);
arcmrecovalue2.setAttributeValue("Arcmrecovalue2",retValue);
* The sql function wil return the formatted string.. but it is able to format only the first value of the table.. the second row is not formatted.
Can anyone help me

Oracle Best practices for changing Byte to Char on Varchar2 columns

Dear Team,
Application Team wanted to change Byte to Char on Varchar2 columns to accommodate Multi byte character on couple of production tables.
Wanted to know is it safe to have mixture of BYTE and CHAR semantics in the same table i have read on the couple of documents that It's good practice to avoid using a mixture of BYTE and CHAR semantics columns in the same table.
What happens if we have mixture of BYTE and CHAR semantics columns in the same table?
Do we need to gather stats & rebuild indexes on the table after these column changes .
Thanks in Advance !!!
SK

Application Team wanted to change Byte to Char on Varchar2 columns to accommodate Multi byte character on couple of production tables.
Wanted to know is it safe to have mixture of BYTE and CHAR semantics in the same table i have read on the couple of documents that It's good practice to avoid using a mixture of BYTE and CHAR semantics columns in the same table.
No change is needed to 'accommodate Multibyte characters'. That support has NOTHING to do with whether a column is specified using BYTE or CHAR.
In 11g the limit for a VARCHAR2 column is 4000 bytes, period. If you specify CHAR and try to insert 1001 characters that each take 4 bytes you will get an exception since that would require 4004 bytes and the limit is 4000 bytes.
In practice the use of CHAR is mostly a convenience to the developer when defining columns for multibyte characters. For example for a NAME column you might want to make sure Oracle will allocate room for 50 characters REGARDLESS of the actual length in bytes.
If you provide a name of 50 one byte characters then only 50 bytes will be used. Provide a name of 50 four byte characters and 200 bytes will be used.
So if that NAME column was defined using BYTE how would you know what length to use for the column? Fifty BYTES will seldom be long enough and 200 bytes SEEMS large since the business user wants a limit of FIFTY characters.
That is why such columns would typically use CHAR; so that the length (fifty) defined for the column matches the logical length of the number of characters.
What happens if we have mixture of BYTE and CHAR semantics columns in the same table?
Nothing happens - Oracle could care less.
Do we need to gather stats & rebuild indexes on the table after these column changes .
No - not if you by 'need' you mean simply because you made ONLY that change.
But that begs the question: if the table already exists, has data and has been in use without their being any problems then why bother changing things now?
In other words: if it ain't broke why try to fix it?
So back to your question of 'best practices'
Best practices is to set the length semantics at the database level when the database is first created and to then use that same setting (BYTE or CHAR) when you create new objects or make DDL changes.
Best practices is also to not fix things that aren't broken.
See the 'Length Semantics' section of the globalization support guide for more best practices
http://docs.oracle.com/cd/E11882_01/server.112/e10729/ch2charset.htm#i1006683

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Hi,
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What is the business requirement you're trying to satisfy?
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Variable Field Divider in a VARCHAR2 column

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