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Top Forums Shell Programming and Scripting extracting lines from a file with similar first name Post 302583779 by vivek d r on Wednesday 21st of December 2011 08:39:27 AM
Old 12-21-2011
extracting lines from a file with similar first name

consider i have two files
Code:
cat onlyviews1.sql
CREATE VIEW V11
 AS
 SELECT id,
              name,
      FROM 
         etc etc
     WHERE     etc etc;
 
CREATE VIEW V22
 AS
 SELECT id,
              name,
      FROM 
         etc etc
     WHERE     etc etc;
 
CREATE VIEW V33
 AS
 SELECT id,
              name,
      FROM 
         etc etc
     WHERE     etc etc;

Code:
cat onlyviews2.sql
CREATE VIEW V119
 AS
 SELECT id,
              name,
      FROM 
         etc etc
     WHERE     etc etc;
 
CREATE VIEW V11
 AS
 SELECT id,
              name,
      FROM 
         etc etc
     WHERE     etc etc;
 
CREATE VIEW V22
 AS
 SELECT id,
              name,
      FROM 
         etc etc
     WHERE     etc etc;

Code:
firstword="CREATE VIEW V11"

i am performing mainly 3 actions as given below..
Code:
1) sed -n "/$firstword/,/;/p" onlyviews1.sql | awk '!x[$1]++' >viewextract1.sql
or
sed -n "/$firstword/,/;/p" onlyviews2.sql | awk '!x[$1]++' > viewextract2.sql
and
 2) viewpresent=`cat onlyviews2.sql | grep -i "$firstword" | wc | awk -F' ' '{print $1}'`
and
3) echo "`sed "/$firstword/,/;/d" onlyviews2.sql`" > onlyviews2.sql

the command (1) extracts individual view from onlyviews file to viewextract file respectively...
the command (2) checks whether a particular view is present in onlyviews2.sql or not.. that is viewpresent will be >1 if present or 0 if not
the command (3) deleted that particular view from onlyviews2.sql

now my problem is say variable $firstword has the contents as shown previously that is CREATE VIEW V11 so if i use commands it will consider V119 too in onlyviews2.sql... since "CREATE VIEW V11" is also present in ""CREATE VIEW V11"9".. so how to overcome this situation...?.... SmilieSmilieSmilie
 

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SQL::Translator::Parser::SQLite(3pm)			User Contributed Perl Documentation		      SQL::Translator::Parser::SQLite(3pm)

NAME
SQL::Translator::Parser::SQLite - parser for SQLite SYNOPSIS
use SQL::Translator; use SQL::Translator::Parser::SQLite; my $translator = SQL::Translator->new; $translator->parser("SQL::Translator::Parser::SQLite"); DESCRIPTION
This is a grammar for parsing CREATE statements for SQLite as described here: http://www.sqlite.org/lang.html CREATE INDEX sql-statement ::= CREATE [TEMP | TEMPORARY] [UNIQUE] INDEX index-name ON [database-name .] table-name ( column-name [, column-name]* ) [ ON CONFLICT conflict-algorithm ] column-name ::= name [ ASC | DESC ] CREATE TABLE sql-command ::= CREATE [TEMP | TEMPORARY] TABLE table-name ( column-def [, column-def]* [, constraint]* ) sql-command ::= CREATE [TEMP | TEMPORARY] TABLE table-name AS select-statement column-def ::= name [type] [[CONSTRAINT name] column-constraint]* type ::= typename | typename ( number ) | typename ( number , number ) column-constraint ::= NOT NULL [ conflict-clause ] | PRIMARY KEY [sort-order] [ conflict-clause ] | UNIQUE [ conflict-clause ] | CHECK ( expr ) [ conflict-clause ] | DEFAULT value constraint ::= PRIMARY KEY ( name [, name]* ) [ conflict-clause ]| UNIQUE ( name [, name]* ) [ conflict-clause ] | CHECK ( expr ) [ conflict-clause ] conflict-clause ::= ON CONFLICT conflict-algorithm CREATE TRIGGER sql-statement ::= CREATE [TEMP | TEMPORARY] TRIGGER trigger-name [ BEFORE | AFTER ] database-event ON [database-name .] table-name trigger-action sql-statement ::= CREATE [TEMP | TEMPORARY] TRIGGER trigger-name INSTEAD OF database-event ON [database-name .] view-name trigger-action database-event ::= DELETE | INSERT | UPDATE | UPDATE OF column-list trigger-action ::= [ FOR EACH ROW | FOR EACH STATEMENT ] [ WHEN expression ] BEGIN trigger-step ; [ trigger-step ; ]* END trigger-step ::= update-statement | insert-statement | delete-statement | select-statement CREATE VIEW sql-command ::= CREATE [TEMP | TEMPORARY] VIEW view-name AS select-statement ON CONFLICT clause conflict-clause ::= ON CONFLICT conflict-algorithm conflict-algorithm ::= ROLLBACK | ABORT | FAIL | IGNORE | REPLACE expression expr ::= expr binary-op expr | expr like-op expr | unary-op expr | ( expr ) | column-name | table-name . column-name | database-name . table-name . column-name | literal-value | function-name ( expr-list | * ) | expr (+) | expr ISNULL | expr NOTNULL | expr [NOT] BETWEEN expr AND expr | expr [NOT] IN ( value-list ) | expr [NOT] IN ( select-statement ) | ( select-statement ) | CASE [expr] ( WHEN expr THEN expr )+ [ELSE expr] END like-op::= LIKE | GLOB | NOT LIKE | NOT GLOB AUTHOR
Ken Youens-Clark <kclark@cpan.org>. SEE ALSO
perl(1), Parse::RecDescent, SQL::Translator::Schema. perl v5.14.2 2012-01-18 SQL::Translator::Parser::SQLite(3pm)
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