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Top Forums Shell Programming and Scripting How to merge two files with unique values matching.? Post 302924068 by RudiC on Thursday 6th of November 2014 05:01:29 AM
Old 11-06-2014
Merging the two output files on the shell level should not be considered the smartest approach as SQL has the means - and is designed to do exactly that - to do the merge immediately in a query. Try like (my SQL has become somewhat rusty, so there may be smarter queries):
Code:
Select hobby, class, subject, sports, S.rollNumber, First_name, Last_name 
from Student_Table S, Name_Table N where S.rollnumber=N.rollnumber

 

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INGRES_PREPARE(3)							 1							 INGRES_PREPARE(3)

ingres_prepare - Prepare a query for later execution

SYNOPSIS
mixed ingres_prepare (resource $link, string $query) DESCRIPTION
Prepares a query for execution by ingres_execute(3). The query becomes part of the currently open transaction. If there is no open transaction, ingres_query(3) opens a new transaction. To close the transaction, you can call either ingres_commit(3) to commit the changes made to the database or ingres_rollback(3) to cancel these changes. When the script ends, any open transaction is rolled back (by calling ingres_rollback(3)). You can also use ingres_autocom- mit(3) before opening a new transaction to have every SQL query immediately committed. Note Related Configurations See also the ingres.describe, ingres.scrollable and ingres.utf8 directives in Runtime Configuration. PARAMETERS
o $link - The connection link identifier o $query - A valid SQL query (see the Ingres SQL reference guide) in the Ingres documentation. See the query parameter in ingres_query(3) for a list of SQL statements which cannot be executed using ingres_prepare(3) RETURN VALUES
ingres_prepare(3) returns a query result identifier that is used with ingres_execute(3) to execute the query. To see if an error occurred, use ingres_errno(3), ingres_error(3), or ingres_errsqlstate(3). SEE ALSO
ingres_unbuffered_query(3), ingres_fetch_array(3), ingres_fetch_assoc(3), ingres_fetch_object(3), ingres_fetch_row(3), ingres_commit(3), ingres_rollback(3), ingres_autocommit(3), ingres_set_environment(3), ingres_errno(3), ingres_error(3). PHP Documentation Group INGRES_PREPARE(3)
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