fix: display query parse error (#632)

* fix: display query parse error

root@localhost:8000/default/default> explain select * from default.t1 where a in （'x');
Parser 'explain select * from default.t1 where a in （'x');' failed
with error 'unable to recognize the rest tokens'

* add test

Author: TCeason

cli/src/session.rs

@@ -483,6 +483,7 @@ impl Session {
             self.query.push('\n');
         }
         self.query.push_str(line);
+        let mut err = String::new();
 
         'Parser: loop {
             let mut is_valid = true;
@@ -510,16 +511,20 @@ impl Session {
                         }
                         previous_token_backslash = matches!(token.kind, TokenKind::Backslash);
                     }
-                    Err(_) => {
+                    Err(e) => {
                         // ignore current query if have invalid token.
                         is_valid = false;
+                        err = e.to_string();
                         continue;
                     }
                 }
             }
             break;
         }
 
+        if self.query.is_empty() && queries.is_empty() && !err.is_empty() {
+            eprintln!("Parser '{}' failed\nwith error '{}'", line, err);
+        }
         queries
     }
 

cli/tests/00-base.result

@@ -18,6 +18,10 @@ a"
 -9999999999999999999999999999999999999999999999999999999999999999999999999999
 1
 NULL
+Parser 'CREATE TABLE 🐳🍞(🐳🐳 INTEGER, 🍞🍞 INTEGER);' failed
+with error 'unable to recognize the rest tokens'
+Parser 'explain select * from c where b in （'x');' failed
+with error 'unable to recognize the rest tokens'
 3.00	3.00	0.0000000170141183460469231731687303715884105727000	-0.0000000170141183460469231731687303715884105727000
 Asia/Shanghai
 3

cli/tests/00-base.sql

@@ -32,6 +32,9 @@ drop table t;
 -- issue 572
 CREATE TABLE 🐳🍞(🐳🐳 INTEGER, 🍞🍞 INTEGER);
 
+-- issue 631
+explain select * from c where b in （'x');
+
 -- enable it after we support code string in databend
 -- select $$aa$$;
 -- select $$