NAME

       pgcopydb - pgcopydb

       Manual  page  for the configuration of pgcopydb. The pgcopydb command accepts sub-commands
       and command line options, see the manual for those commands for details.  The  only  setup
       that pgcopydb commands accept is the filtering.

FILTERING

       Filtering  allows to skip some object definitions and data when copying from the source to
       the target database. The pgcopydb commands that accept the option --filter (or  --filters)
       expect  an existing filename as the option argument. The given filename is read in the INI
       file format, but only uses sections and option keys. Option values are not used.

       Here is an inclusion based filter configuration example:

          [include-only-table]
          public.allcols
          public.csv
          public.serial
          public.xzero

          [exclude-index]
          public.foo_gin_tsvector

          [exclude-table-data]
          public.csv

       Here is an exclusion based filter configuration example:

          [exclude-schema]
          foo
          bar
          expected

          [exclude-table]
          "schema"."name"
          schema.othername
          err.errors
          public.serial

          [exclude-index]
          schema.indexname

          [exclude-table-data]
          public.bar
          nsitra.test1

       Filtering can be done with pgcopydb by using the following rules, which are also the  name
       of the sections of the INI file.

   include-only-table
       This  section allows listing the exclusive list of the source tables to copy to the target
       database. No other table will be processed by pgcopydb.

       Each line in that section should be a schema-qualified  table  name.  Postgres  identifier
       quoting rules can be used to avoid ambiguity.

       When  the  section  include-only-table  is  used  in  the filtering configuration then the
       sections exclude-schema and exclude-table are disallowed. We would not know how to  handle
       tables that exist on the source database and are not part of any filter.

   exclude-schema
       This section allows adding schemas (Postgres namespaces) to the exclusion filters. All the
       tables that belong to any listed schema in this section are going to  be  ignored  by  the
       pgcopydb command.

       This section is not allowed when the section include-only-table is used.

   include-only-schema
       This  section  allows  editing  schema  (Postgres  namespaces) to the exclusion filters by
       listing the schema that are not going to be excluded. This is a  syntaxic  sugar  facility
       that  helps  with entering a long list of schemas to exclude when a single schema is to be
       selected.

       Despite the name, this section is an exclusion filter.

       This section is not allowed when the section exclude-schema is used.

   exclude-table
       This section allows to add a list of qualified table names to the exclusion  filters.  All
       the  tables  that  are  listed in the exclude-table section are going to be ignored by the
       pgcopydb command.

       This section is not allowed when the section include-only-table is used.

   exclude-index
       This section allows to add a list of qualified index names to the exclusion filters. It is
       then  possible  for pgcopydb to operate on a table and skip a single index definition that
       belong to a table that is still processed.

   exclude-table-data
       This section allows to skip copying the data from a list of  qualified  table  names.  The
       schema, index, constraints, etc of the table are still copied over.

REVIEWING AND DEBUGGING THE FILTERS

       Filtering a pg_restore archive file is done through rewriting the archive catalog obtained
       with pg_restore --list. That's a little hackish at times, and we also have  to  deal  with
       dependencies in pgcopydb itself.

       The following commands can be used to explore a set of filtering rules:

          • pgcopydb list depends

          • pgcopydb restore parse-list

AUTHOR

       Dimitri Fontaine

COPYRIGHT

       2022-2023, Dimitri Fontaine