feat: support pgsql code completion (#205)

* feat: pgsql: complete sql, upgrade syntax file and complete autoImprove

* feat: pgsql: complete unit test

* feat: pgsql: update unit test for autocomplete

* feat(pgsql: update split's context type ): pgsql: update split's context type

* feat(pgsql: update schema, table, procedure, tablespace, function, view,database's rule name): pgsql

* feat: pgsql: update usualName's rule realize

* feat: pgsql:update funcName's using

---------

Co-authored-by: zhaoge <>

test/parser/pgsql/suggestion/fixtures/syntaxSuggestion.sql

@@ -0,0 +1,31 @@
+CREATE TABLE db.  ();
+
+INSERT INTO db.tb ;
+
+SELECT * FROM db. ;
+
+ALTER TABLE db ;
+
+CREATE OR REPLACE VIEW db.v;
+
+ALTER VIEW db.v ;
+
+DROP VIEW db. ;
+
+CREATE FUNCTION fn1;
+
+DROP FUNCTION fn1;
+
+CREATE DATABASE db;
+
+DROP DATABASE db ;
+
+ALTER DATABASE db ;
+
+CREATE SCHEMA IF NOT EXISTS schema_name;
+
+DROP SCHEMA IF EXISTS sch;
+
+ALTER SCHEMA name RENAME TO new_name;
+
+

test/parser/pgsql/suggestion/fixtures/tokenSuggestion.sql

@@ -0,0 +1,12 @@
+DROP ;
+
+ALTER ;
+
+INSERT ;
+
+DELETE ;
+
+CREATE ;
+
+
+