add support for Vertica

Signed-off-by: Andreas Gerler <[email protected]>

README.md

@@ -18,6 +18,7 @@ sqls aims to provide advanced intelligence for you to edit sql in your own edito
 - PostgreSQL([pgx](https://github.com/jackc/pgx))
 - SQLite3([go-sqlite3](https://github.com/mattn/go-sqlite3))
 - MSSQL([go-mssqldb](https://github.com/denisenkom/go-mssqldb))
+- Vertica([vertica-sql-go](https://github.com/vertica/vertica-sql-go))
 
 ### Language Server Features
 
@@ -123,6 +124,9 @@ connections:
       user: sshuser
       passPhrase: ssspass
       privateKey: /home/sqls-server/.ssh/id_rsa
+  - alias: dsn_vertica
+    driver: vertica
+	dataSourceName: vertica://user:pass@host:5433/dbname
 ```
 
 ### Workspace configuration Sample

dialect/keyword.go

@@ -387,6 +387,7 @@ const (
 	DatabaseDriverSQLite3    DatabaseDriver = "sqlite3"
 	DatabaseDriverMssql      DatabaseDriver = "mssql"
 	DatabaseDriverOracle     DatabaseDriver = "oracle"
+	DatabaseDriverVertica    DatabaseDriver = "vertica"
 )
 
 func DataBaseKeywords(driver DatabaseDriver) []string {
@@ -407,6 +408,8 @@ func DataBaseKeywords(driver DatabaseDriver) []string {
 		return mssqlKeywords
 	case DatabaseDriverOracle:
 		return oracleKeyWords
+	case DatabaseDriverVertica:
+		return verticaKeywords
 	default:
 		return sqliteKeywords
 	}
@@ -430,6 +433,8 @@ func DataBaseFunctions(driver DatabaseDriver) []string {
 		return []string{}
 	case DatabaseDriverOracle:
 		return oracleReservedWords
+	case DatabaseDriverVertica:
+		return verticaReservedWords
 	default:
 		return []string{}
 	}