SQL & PL/SQL :: Pattern Matching Utility

Jul 2, 2013

I am using 11.2.0.3.0 version of oracle. I have not worked on regular expressions. During working on sql injection, I got set of below patterns which is feeded to some JAVA regx classes or utilityto restrict selective Request, based on patterns.below patterns and the characters which will be restricted by this pattern matching utility.

Given below are 3- patterns:

(.*?[sd)'])(?:AND|OR)(?=[s-+(']|.?d)(s*[-+(]?s*(?:[^s!<>=]+?|'.*?')[s)]*(?:s*(?:(?:[-+/*(.]||s*|)s*)+(?:[^s!<>=]+?|'.*?')[s)]*)*s*)(?: <s*>|>s*=|<s*=|!s*=|=|>|<)(.*)
(.*?[sd)'])(?:AND|OR)(?=[s-+(']|.?d)(s*[-+(]?s*(?:[^s]+?|'.*?')[s)]*(?:s*(?:(?:[-+/*(.]||s*|)s*)+(?:[^s]+?|'.*?')[ s)]*)*s*)(? <=[s)']|d.?)(?:LIKE|IN|BETWEEN)([s-+('].*)
.*[sd)'](?:AND|OR)[(+-s]*(?:'.*?'|.?d[ds-+/*().]*)[)s]*(?:<s*>|>s*=|<s*=|!s*=|=|>|<|LIKE|IN|BETWEEN)[(+-s]*(?:(+s*SELECT)?[(+-s]*(?:'.*?'|.?d[ds-+/*().]*).*

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SQL & PL/SQL :: Need To Check Pattern Matching Numbers

Apr 19, 2010

I am trying to write a pl/sql script where i need to check pattern matching numbers.My database is oracle 10g and i will put this logic in a procedure.i will pass no of tel_no to get.

if the no is 3 then i need 2072860126, 2072860127 and 2072860128(i.e all 3 in sequence)
if 2 then 2072860126, 2072860127. as such..the selected nos must be in sequence.

A query returns list od tel nos. in that tel i need to choose which staisfy my criteria.

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Jan 22, 2010

I have a requirement which is as follows.A file will be downloaded into a server every day at 2 A.M. The name of the file would be 'BB90170_sysdate_D'. I need to refer to this file everyday since everyday the data changes.How do i identify which is the latest file in the server folder using Forms 6i code. Means while i have tried this

'' in_file :=Text_IO.Fopen ('C:TIESPartprocurementBB90170_'||part_date,'r')". How to use pattern matching in Text_io.fopen. Part_date in refers to sysdate without Timestamp.

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SQL & PL/SQL :: Pattern Matching And Updating Of Number Values In String?

Nov 5, 2011

I have a table(PSUSEROBJTYPE) with a long field(PTCUSTFORMAT) containing a row value value in the form:

#1|0|0|0|0|#2|1|0|0|1|#3|1|0|0|0|#4|0|0|0|0

Here, I want to update the above field value to a value in the form:

#2|0|0|0|0|#3|1|0|0|1|#4|1|0|0|0|#5|0|0|0|0

This is nothing but finding each occurrence of (#n) in the above string and replacing it by (#n+1). (i.e #1 is replaced by #2,#2 is replaced by #3).

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Mar 21, 2011

Is there a method or a tool out there that can do a search through an Oracle Schema to find objects ( tables, fields, stored procedures, etc) containing a specified character pattern ? For example : I would like to return all of the tables that contain fields containing the character string "ABC"

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Jun 20, 2012

I want to search for a pattern and replace with a string. I can easily achieve the same in oracle 10g with REGEXP_REPLACE , I want to get the similar solution in 9i.

Eg.

I have to search for a string pattern 1234 5678 9012 6736 , I want to replace the same with XXXX XXXX XXXX XXXX.

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Oct 15, 2010

I have a date column, where the date values are not stored in a specific pattern. following are the sample value from the column.

8/10/10 12:00 AM
9/22/2010 1:00AM
01/01/2001
9/1/10 6:00 PM
9/22/2009 1:00AM

i want to convert this to a standard format, 'dd/mm'yyyy'.

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SQL & PL/SQL :: Finding Number Of Pattern Occurrences In String?

Feb 4, 2012

The code which I am working on consists of an incoming dynamic string which be in the form of binary digits. The max size of the string will be 12 digits. For example, the string can be '111011000001', '000000000000', '111111011111', etc.

I need to find the number of occurences of '111' in the incoming string. Say in the 1st example, result will be 1, in the 2nd example result will be 0, and in the third example, the result will be 3.

I have been trying to capture the string length and replacing the variables '111' to find the number of occurences, but it isn't giving me the result that I want. This is what I have tried

SQL> conn hr/hr
Connected.
SQL> show user
USER is "HR"

[Code]....

I searched the forum and found a similar topic, and following that guideline, I even tried dividing the string with the length of the pattern. It works in some scenarios (the first and second examples mentioned below), while it fails in some scenarios (third example mentioned below)

SQL> select (length('11101110111') - length(replace('11101110111','111','')))/length('111') as occurences from dual;

OCCURENCES
----------
3

SQL> select (length('110111110111') - length(replace('110111110111','111','')))/length('111') as occurences from dual;

OCCURENCES
----------
2

SQL> select (length('111111111111') - length(replace('111111111111','111','')))/length('111') as occurences from dual;

OCCURENCES
----------

SQL>

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Oct 16, 2012

Is there a way to perform a pattern check on a value ?

For example: 654321HD9

The pattern is 6 numbers, followed by 2 letters, followed by 1 number. The data type for the attribute is a string.

Examples of right or wrong
654321HD9 - correct value
654321HD - wrong value
654321111 - wrong value
HD1111111 - wong value

The pattern has to be as i mentioned above (6 number, 2 letters, 1 number) otherwise its wrong. My pattern does not cover all cases.

select REGEXP_SUBSTR('654321HD9', '[0-9]+[A-Za-z]+[0-9]+') from dual;

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SQL & PL/SQL :: String Matching?

Feb 22, 2011

check out following scripts

CREATE TABLE email (
ids VARCHAR2(500))
INSERT INTO email VALUES('1233@gmail.com;3456@gmail.com;0954@gmail.com')
INSERT INTO email VALUES('7658@gmail.com;346@gmail.com;6346@gmail.com')
CREATE OR REPLACE FUNCTION is_same(emailid VARCHAR2) RETURN BOOLEAN

[code]...

how to write --emailid is present in rec.ids THEN this logic in function

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SQL & PL/SQL :: Matching Query

May 15, 2012

i have two table menu_user_d and emp_master , the requirement is i need to match names from both these tables like i want want to match menu_user_d.user_desc to emp_master.emp_name to get the emp_id and update the correct emp_id into menu_user_d.user_emp_id , i have prepared a test case and wrote one query but could'nt succeed in getting all the matching names, is there a way i can do this correct matching and then update it automatically.

SQL> create table menu_user_d (user_id varchar2(12),user_desc varchar2(30),user_emp_id varchar2(12));

Table created.

SQL> insert all
2 into menu_user_d(user_id,user_desc,user_emp_id) values ('ARIF','Mohammed Arif',null)
3 into menu_user_d(user_id,user_desc,user_emp_id) values ('wajahat','Wajahat',null)
4 into menu_user_d(user_id,user_desc,user_emp_id) values ('Imad','Imd',null)
5 select * from dual;

3 rows created.

SQL> commit;

Commit complete.

SQL> create table emp_master (emp_id varchar2(12),emp_name varchar2(30));

Table created.

SQL> insert all
2 into emp_master(emp_id,emp_name) values ('7014','Md.Arif')
3 into emp_master(emp_id,emp_name) values ('6777','Wajahat')
4 into emp_master(emp_id,emp_name) values ('1008','Imad El Kane')
5 select * from dual;

3 rows created.

SQL> commit;

Commit complete.

SQL> SELECT USER_ID,USER_DESC,USER_emp_id,EMP_id,EMP_NAME
2 FROM MENU_USER_d,EMP_master
3 WHERE UPPER(USER_DESC) LIKE UPPER(EMP_NAME) ;

USER_ID USER_DESC USER_EMP_ID EMP_ID EMP_NAME
------------ ------------------------------ ------------ ------------ ------------------------------
wajahat Wajahat 6777 Wajahat

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Aug 10, 2011

I have a personname table which contains records of millions Person-names. My application has a requirment to return "any" 200 names that match the given Firstname and lastname entered by user.note the NOT actually "top-n", but "Any-N" , i.e. user wants "any" 200 names and NOT in any "specific order".

which is the best option to make most efficient search --

1) rownum < 201
2) row_num()
3) rank/denserank etc

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Dec 19, 2012

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Dec 11, 2012

When I pass the input as 'micky', then i should get the count of records as 4. I tried to use REGEXP_LIKE, but could not get the result.

Test Case:

DROP TABLE test1;
CREATE TABLE test1( pattern_series VARCHAR2(30));
INSERT INTO test1 VALUES ('qa_micky1');
INSERT INTO test1 VALUES ('qa_micky2');
[code].....

-- I should get the output as 4 not 8

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Aug 19, 2013

i am in need to find starting two words matching like i have string "my name is person". i want starting two words find "my name". i tried with this

SELECT T.FULL_NAME,SUBSTR(t.full_name,0,INSTR(t.full_name, ' ')-1+INSTR(t.full_name, ' ')-1) AS outpu2
FROM test t

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Jul 7, 2010

What I'm trying to do is make it so that it returns 'MATCH' when I pass a date that matches a date every two weeks starting Jan 01. Like Jan 01, Jan 15, Jan 29, Feb 12, etc. would return as MATCH Jan 02, Jan 03, etc. would return as NO_MATCH

The part in bold is what I'm having trouble figuring out.

select nvl(
(select 'MATCH'
from dual
where 'date' = '2 week intervals starting Jan 01'
), 'NO_MATCH') from dual

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Mar 27, 2013

In PL/SQL, the following sql causes an error when there is no record matching the search criteria:

-----
select pin_number from table1 where id = 1;
-----
error: No Data Available

Is there a way to get a return value of 0 whenever there is no matching record?

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Mar 10, 2012

I need to search a pattern backwards in a CLOB field.Function DBMS_LOB.instr does not work with '-1' offset (where to start the search) as instr does.

Parameters: instr(text_to_be_searched, pattern, offset, nth)

Example: I want to search 'Hello world' for the first instance of the letter 'o' starting from the end, backwards.As you can see, result for DBMS_LOB.instr is null when entered -1 for offset.

select
DBMS_LOB.instr('Hello world','o',-1,1) lob_i,
instr('Hello world','o',-1,1) std_i
from dual;

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Aug 19, 2013

find two words matching from two different tables.

Example:-

table1 || table2
john Dev || Kab Leva
Zaheer khan || mark dev
Cina maater || jhon dev wood
kab leva Sumo || Tony levis

output:-

john dev || john dev
kab leva || kab leva

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Nov 8, 2012

I'm trying to match all sentences that contain words starting with given search tokens at least once. For example: if the given search token words are one and two then only sentences like "one plus one is two" should match. And should not match sentences like "one plus three is four". I was able to come up with this but I need a AND condition which I'm unable to get it right.

select count(*) from dual where regexp_like('one plus one is two', '(^|s)one|three', 'i');

Currently this gives a count of 1. But needs to give a count of 0 when the regexp is fixed.

search words : one two

one is less than two -> match
two is greater than one -> match
onetwo is union of two numbers -> match
onetwo is union of 2 numbers -> not a match as 'two' is not at the beginning of a word
one is less than three -> not a match as two is not present.

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Aug 21, 2012

How can I call the dos2unix utility from Oracle ? I'm building an external table in a procedure where each time the latter is called the file name(s) are different.

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Mar 15, 2010

I have two table and trying to update tableA with data from tableB but gives an error. My TableA has columns - colA,colB,colC,colX and table B has columns - colA,colB,colX. Sample data looks like this:

tableA:
XXYY, local,3/19,48
XXYY,ixc,3/19,24
XXYYlocal,3/20,48
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Table B:
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PPQQ,local,72

this is the query I wrote
update tableA a
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When i run it gives this error:single row subquery returns more than one row.

tableB has only 1 value for colX for each colA,colB record but tableA has mutiple colA and colB repeated but for all of thsoe in table A i want to update the tableB.colX value for matching colA and colB.

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Jul 3, 2012

I need to display the record when all the columns have matching records,If one of them doesn't match then it should not be displayed

The following is the example

WITH t1 as
(select 159435 ky from dual)
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(select 78 id ,'Z-' rk,'SL' cd from dual union all
select 78 id ,'Z+' rk,'SL' cd from dual union all
select 78 id ,'Z-' rk,'SL' cd from dual union all

[code].....

In the above data bg.rk= 'Z-' but one of the record in T3 is having Z+ ,So this should not be displayed (same condition with column CD) in this example cd column in both table matches I tried like above query but i'm getting the record.

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Jan 19, 2011

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In SSIS, I convert the unique identifier to string data type.

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Apr 14, 2010

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Jan 14, 2013

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NAME VARCHAR2(30)
);
CREATE TABLE TABLE2(

[code]....

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Jul 3, 2012

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[code]....

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