From 1daba75e7b1b0e7214c9d3fde1edcc4d5231d5b0 Mon Sep 17 00:00:00 2001
From: LFC <bayinamine@gmail.com>
Date: Fri, 23 Dec 2022 14:29:47 +0800
Subject: [PATCH] refactor: use "USE" keyword (#785)

Co-authored-by: luofucong <luofucong@greptime.com>
---
 src/servers/src/mysql/handler.rs | 6 +++---
 src/sql/src/parser.rs            | 3 +--
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/servers/src/mysql/handler.rs b/src/servers/src/mysql/handler.rs
index cfb24514a3..483a4956b4 100644
--- a/src/servers/src/mysql/handler.rs
+++ b/src/servers/src/mysql/handler.rs
@@ -17,7 +17,7 @@ use std::time::Instant;
 
 use async_trait::async_trait;
 use common_query::Output;
-use common_telemetry::{debug, error};
+use common_telemetry::{error, trace};
 use opensrv_mysql::{
     AsyncMysqlShim, ErrorKind, InitWriter, ParamParser, QueryResultWriter, StatementMetaWriter,
 };
@@ -74,7 +74,7 @@ impl MysqlInstanceShim {
     }
 
     async fn do_query(&self, query: &str) -> Vec<Result<Output>> {
-        debug!("Start executing query: '{}'", query);
+        trace!("Start executing query: '{}'", query);
         let start = Instant::now();
 
         // TODO(LFC): Find a better way to deal with these special federated queries:
@@ -89,7 +89,7 @@ impl MysqlInstanceShim {
                     .await
             };
 
-        debug!(
+        trace!(
             "Finished executing query: '{}', total time costs in microseconds: {}",
             query,
             start.elapsed().as_micros()
diff --git a/src/sql/src/parser.rs b/src/sql/src/parser.rs
index cc8b3da897..63c28954c0 100644
--- a/src/sql/src/parser.rs
+++ b/src/sql/src/parser.rs
@@ -102,8 +102,7 @@ impl<'a> ParserContext<'a> {
 
                     Keyword::DROP => self.parse_drop(),
 
-                    // TODO(LFC): Use "Keyword::USE" when we can upgrade to newer version of crate sqlparser.
-                    Keyword::NoKeyword if w.value.to_lowercase() == "use" => {
+                    Keyword::USE => {
                         self.parser.next_token();
 
                         let database_name =