1 files changed, 38 insertions, 0 deletions
diff --git a/sql_scripts/pg_fts_install.sql b/sql_scripts/pg_fts_install.sql
new file mode 100644
index 00000000..d0655134
--- /dev/null
+++ b/sql_scripts/pg_fts_install.sql
@@ -0,0 +1,38 @@
+ALTER TABLE question ADD COLUMN tsv tsvector;
+
+CREATE OR REPLACE FUNCTION public.create_plpgsql_language ()
+    RETURNS TEXT
+    AS $$
+        CREATE LANGUAGE plpgsql;
+        SELECT 'language plpgsql created'::TEXT;
+    $$
+LANGUAGE 'sql';
+
+SELECT CASE WHEN
+      (SELECT true::BOOLEAN
+         FROM pg_language
+        WHERE lanname='plpgsql')
+    THEN
+      (SELECT 'language already installed'::TEXT)
+    ELSE
+      (SELECT public.create_plpgsql_language())
+    END;
+
+DROP FUNCTION public.create_plpgsql_language ();
+
+CREATE OR REPLACE FUNCTION set_question_tsv() RETURNS TRIGGER AS $$
+begin
+  new.tsv :=
+     setweight(to_tsvector('english', coalesce(new.tagnames,'')), 'A') ||
+     setweight(to_tsvector('english', coalesce(new.title,'')), 'B') ||
+     setweight(to_tsvector('english', coalesce(new.summary,'')), 'C');
+  RETURN new;
+end
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER tsvectorupdate BEFORE INSERT OR UPDATE
+ON question FOR EACH ROW EXECUTE PROCEDURE set_question_tsv();
+
+CREATE INDEX blog_entry_tsv ON blog_entry USING gin(body_tsv);
+
+UPDATE question SET title = title;