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Full Discussion: Extract strings from the file using awk s
Top Forums UNIX for Beginners Questions & Answers Extract strings from the file using awk s Post 303045844 by Mannu2525 on Wednesday 15th of April 2020 10:37:19 AM
Old 04-15-2020
Extract strings from the file using awk s
Hi,

I'm trying to make a file that gives me useful information. Format of file is below:-

Code:
--- (Tue Apr 14 09:46:43 EDT 2020): JOIN_Constraints_Schema:test_simple_joins -------------
internal optimizer errors: 0
--- (Tue Apr 14 09:48:10 EDT 2020): JOIN_Constraints_Schema:test_constraint_joins_setop_dis_oby_lmt -------------
Number of queries that causes internal optimizer errors: 0
--- (Tue Apr 14 09:49:02 EDT 2020): in External_Table_Schema:test_subquery_in_from ---------------
--- (Tue Apr 14 09:49:10 EDT 2020): EventSeries_Schema:test_Event_Series1 -------------
--- (Tue Apr 14 09:49:17 EDT 2020):  Gosalesdw_Schema:test_complex_analytics -------------
--- (Tue Apr 14 09:49:25 EDT 2020):  GBY_Schema1:test_Groupby_Rollup -------------
internal optimizer errors: 0
--- (Tue Apr 14 09:49:40 EDT 2020):  GBY_Schema1:test_Groupby_GroupingSets -------------
internal optimizer errors: 0
--- (Tue Apr 14 09:49:52 EDT 2020):  GBY_Schema1:test_Groupby_Cube -------------
internal optimizer errors: 0
--- (Tue Apr 14 09:50:05 EDT 2020):  GBY_Schema1:test_gby -------------
internal optimizer errors: 0

I need to extract the text after the timestamp and immediately next line error number having internal optimizer error.

It should be like - newout.txt
Code:
JOIN_Constraints_Schema,test_simple_joins,0
JOIN_Constraints_Schema,test_constraint_joins_setop_dis_oby_lmt,0
GBY_Schema1,test_Groupby_Rollup,0
GBY_Schema1,test_Groupby_GroupingSets,0
GBY_Schema1,test_Groupby_Cube,0
GBY_Schema1,test_gby,0

Exception - If there is no internal optimizer error attached to any field given in timestamp then no need to print

I tried using a simple script but not works for me

Code:
cat newout.txt | while read x
do
        if [ $(echo $x | grep -E '20[0-9][0-9]\):' | wc -l) == 1 ]
        then
                 schema=$(echo $x | awk '{print $(NF-1)}' | awk -F ':' '{print $1}')
                 config=$(echo $x | awk '{print $(NF-1)}' | awk -F ':' '{print $2}')
         else
                 internal=$(echo $x | awk -F ':' '{print $2}')
         fi
         echo $schema,$config,$internal
done

Please help me achieve this.
 

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LEARN ABOUT REDHAT

vacuumdb

VACUUMDB(1)						  PostgreSQL Client Applications					       VACUUMDB(1)

NAME

       vacuumdb - garbage-collect and analyze a PostgreSQL database

SYNOPSIS

       vacuumdb  [  connection-options... ] [ --full | -f ] [ --verbose | -v ] [ --analyze | -z ] [ --table | -t 'table [ ( column [,...] ) ]' ] [
       dbname ]

       vacuumdb [ connection-options... ] [ --all | -a ] [ --full | -f ] [ --verbose | -v ] [ --analyze | -z ]

DESCRIPTION

       vacuumdb is a utility for cleaning a PostgreSQL database.  vacuumdb will also generate internal statistics used	by  the  PostgreSQL  query
       optimizer.

       vacuumdb  is a shell script wrapper around the backend command VACUUM [vacuum(7)] via the PostgreSQL interactive terminal psql(1). There is
       no effective difference between vacuuming databases via this or other methods.  psql must be found by the script and a database server must
       be  running at the targeted host. Also, any default settings and environment variables available to psql and the libpq front-end library do
       apply.

       vacuumdb might need to connect several times to the PostgreSQL server, asking for a  password  each  time.  It  is  convenient  to  have  a
       $HOME/.pgpass file in such cases.

OPTIONS

       vacuumdb accepts the following command-line arguments:

       [-d] dbname

       [--dbname] dbname
	      Specifies  the name of the database to be cleaned or analyzed.  If this is not specified and -a (or --all) is not used, the database
	      name is read from the environment variable PGDATABASE. If that is not set, the user name specified for the connection is used.

       -a

       --all  Vacuum all databases.

       -e

       --echo Echo the commands that vacuumdb generates and sends to the server.

       -f

       --full Perform ``full'' vacuuming.

       -q

       --quiet
	      Do not display a response.

       -t table [ (column [,...]) ]

       --table table [ (column [,...]) ]
	      Clean or analyze table only.  Column names may be specified only in conjunction with the --analyze option.

	      Tip: If you specify columns to vacuum, you probably have to escape the parentheses from the shell.

       -v

       --verbose
	      Print detailed information during processing.

       -z

       --analyze
	      Calculate statistics for use by the optimizer.

       vacuumdb also accepts the following command-line arguments for connection parameters:

       -h host

       --host host
	      Specifies the host name of the machine on which the server is running. If host begins with a slash, it is used as the directory  for
	      the Unix domain socket.

       -p port

       --port port
	      Specifies the Internet TCP/IP port or local Unix domain socket file extension on which the server is listening for connections.

       -U username

       --username username
	      User name to connect as

       -W

       --password
	      Force password prompt.

DIAGNOSTICS

       VACUUM Everything went well.

       vacuumdb: Vacuum failed.
	      Something  went wrong. vacuumdb is only a wrapper script. See VACUUM [vacuum(7)] and psql(1) for a detailed discussion of error mes-
	      sages and potential problems.

ENVIRONMENT

       PGDATABASE

       PGHOST

       PGPORT

       PGUSER Default connection parameters.

EXAMPLES

       To clean the database test:

       $ vacuumdb test

       To clean and analyze for the optimizer a database named bigdb:

       $ vacuumdb --analyze bigdb

       To clean a single table foo in a database named xyzzy, and analyze a single column bar of the table for the optimizer:

       $ vacuumdb --analyze --verbose --table 'foo(bar)' xyzzy

SEE ALSO

       VACUUM [vacuum(7)]

Application							    2002-11-22							       VACUUMDB(1)
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