=# CREATE INDEX pg_tools_multi_idx ON pg_tools USING gin (tool gin_bigm_ops, description gin_bigm_ops) WITH (FASTUPDATE = off) You can also create multicolumn pg_bigm index and specify GIN related parameters then, as follows. gin_bigm_ops must be used as an operator class.=# CREATE INDEX pg_tools_idx ON pg_tools USING gin (description gin_bigm_ops) =# INSERT INTO pg_tools VALUES ('pg_trgm', 'Tool that provides 3-gram full text search capability in PostgreSQL') =# INSERT INTO pg_tools VALUES ('pg_bigm', 'Tool that provides 2-gram full text search capability in PostgreSQL') =# INSERT INTO pg_tools VALUES ('pg_dbms_stats', 'Tool that allows a user to stabilize planner statistics in PostgreSQL') =# INSERT INTO pg_tools VALUES ('pg_hint_plan', 'Tool that allows a user to specify an optimizer HINT to PostgreSQL') =# CREATE TABLE pg_tools (tool text, description text) The following example creates the table pg_tools which stores the name and description of PostgreSQL related tool, inserts four records into the table, and then creates the full text search index on the description column. You can create an index for full text search by using GIN index. pg_bigm.* (parameters which begin with pg_bigm).custom_variable_classes (only PostgreSQL 9.1).shared_preload_libraries or session_preload_libraries.DROP EXTENSION pg_bigm needs to be executed with CASCADE option to delete all the database objects which depend on pg_bigm, e.g., pg_bigm full text search index.ĭelete the following pg_bigm related settings from nf.pg_bigm needs to be unloaded from all the databases that it was loaded into.# make USE_PGXS=1 PG_CONFIG=/opt/pgsql-X.Y.Z/bin/pg_config uninstall Unload pg_bigm from the database and then uninstall it. CREATE EXTENSION pg_bigm needs to be executed in all the databases that you want to use pg_bigm in.In PostgreSQL 9.1, custom_variable_classes also must be set to 'pg_bigm'.In nf, shared_preload_libraries or session_preload_libraries (available in PostgreSQL 9.4 or later) must be set to 'pg_bigm' to preload the pg_bigm shared library into the server.pg_bigm supports all PostgreSQL encoding and locale.Replace $PGDATA with the path to database cluster.Pg_bigm | 1.1 | public | text index searching based on bigrams $ initdb -D $PGDATA -locale=C -encoding=UTF8 If the PATH environment variable contains the path to pg_config, PG_CONFIG doesn't need to be specified.Ĭreate the database cluster, modify nf, start PostgreSQL server and then load pg_bigm into the database. PG_CONFIG : Specify the path to pg_config (which exists in the bin directory of PostgreSQL installation).USE_PGXS : USE_PGXS=1 must be always specified when building pg_bigm.# make USE_PGXS=1 PG_CONFIG=/opt/pgsql-X.Y.Z/bin/pg_config install $ make USE_PGXS=1 PG_CONFIG=/opt/pgsql-X.Y.Z/bin/pg_config Install pg_bigmĭownload the source archive file of pg_bigm from here, and then build and install it. If PostgreSQL is installed from RPM, the postgresql-devel package must be installed to build pg_bigm. By default, PostgreSQL is installed in /usr/local/pgsql. -prefix : Specify the PostgreSQL installation directory.Install Install PostgreSQLįrom the official site of PostgreSQL download the source archive file "postgresql-X.Y.Z.tar.gz (please replace X.Y.Z with actual version number)" of PostgreSQL, and then build and install it. Pg_bigm requires PostgreSQL 9.1 or later. Pg_bigm has been built and tested on the following platforms: Category Pg_bigm 1.1 or later can coexist with pg_trgm in the same database, but pg_bigm 1.0 cannot.
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