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Top Forums Shell Programming and Scripting Perl Repetitive Pattern Matching Post 302341118 by Niroj on Wednesday 5th of August 2009 05:58:10 AM
Old 08-05-2009
Perl Repetitive Pattern Matching

Problem:

GIVEN
=======
my $sql="INSERT INTO table_nm(a, b, b, d, e, f , g) VALUES (2046, TODAY, 'Change Subscription Name', '00000000000002000000000000000000000000000000000000', '00000000000001000000000000000000000000000000000000', '00000000000000000000000000000000000000000000000000', 1); ";

Required O/P:
================
a=2046 AND b=TODAY AND c='Change Subscription Name' AND d='00000000000002000000000000000000000000000000000000' AND e='00000000000001000000000000000000000000000000000000' AND f='00000000000000000000000000000000000000000000000000' AND g=1

WHAT I DID:
Code:
if ( $sql =~ m/^\s*INSERT\s+INTO\s+.*VALUES\s*\(/ )
   {
                          $sql =~ s/^\s*INSERT\s+INTO\s+[^\(]*\((.*),?\)\s+VALUES[\s]*\(([^\)]*)\).*/$1|--|$2/i;
                          $sql =~ s/([^,]*),.*?\|--\|([^,]*),.*?/$1=$2 AND/gi;
                          print "$sql"
   }

Actual Output:

a=2046 AND TODAY, 'Change Subscription Name', '00000000000002000000000000000000000000000000000000', '00000000000001000000000000000000000000000000000000', '00000000000000000000000000000000000000000000000000', 1


Can you please suggest me how to get the required output?



Last edited by Yogesh Sawant; 08-05-2009 at 08:17 AM.. Reason: added code tags
 

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SAVEPOINT(7)                                                       SQL Commands                                                       SAVEPOINT(7)

NAME
SAVEPOINT - define a new savepoint within the current transaction SYNOPSIS
SAVEPOINT savepoint_name DESCRIPTION
SAVEPOINT establishes a new savepoint within the current transaction. A savepoint is a special mark inside a transaction that allows all commands that are executed after it was established to be rolled back, restoring the transaction state to what it was at the time of the savepoint. PARAMETERS
savepoint_name The name to give to the new savepoint. NOTES
Use ROLLBACK TO SAVEPOINT [rollback_to_savepoint(7)] to rollback to a savepoint. Use RELEASE SAVEPOINT [release_savepoint(7)] to destroy a savepoint, keeping the effects of commands executed after it was established. Savepoints can only be established when inside a transaction block. There can be multiple savepoints defined within a transaction. EXAMPLES
To establish a savepoint and later undo the effects of all commands executed after it was established: BEGIN; INSERT INTO table1 VALUES (1); SAVEPOINT my_savepoint; INSERT INTO table1 VALUES (2); ROLLBACK TO SAVEPOINT my_savepoint; INSERT INTO table1 VALUES (3); COMMIT; The above transaction will insert the values 1 and 3, but not 2. To establish and later destroy a savepoint: BEGIN; INSERT INTO table1 VALUES (3); SAVEPOINT my_savepoint; INSERT INTO table1 VALUES (4); RELEASE SAVEPOINT my_savepoint; COMMIT; The above transaction will insert both 3 and 4. COMPATIBILITY
SQL requires a savepoint to be destroyed automatically when another savepoint with the same name is established. In PostgreSQL, the old savepoint is kept, though only the more recent one will be used when rolling back or releasing. (Releasing the newer savepoint will cause the older one to again become accessible to ROLLBACK TO SAVEPOINT and RELEASE SAVEPOINT.) Otherwise, SAVEPOINT is fully SQL conforming. SEE ALSO
BEGIN [begin(7)], COMMIT [commit(7)], RELEASE SAVEPOINT [release_savepoint(7)], ROLLBACK [rollback(7)], ROLLBACK TO SAVEPOINT [roll- back_to_savepoint(7)] SQL - Language Statements 2010-05-14 SAVEPOINT(7)

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