diff --git a/pegjs/db2.pegjs b/pegjs/db2.pegjs
index f3fac5b7..0cd7095b 100644
--- a/pegjs/db2.pegjs
+++ b/pegjs/db2.pegjs
@@ -1936,9 +1936,9 @@ column_name
 ident_name
   =  start:ident_start parts:ident_part* { return start + parts.join(''); }
 
-ident_start = [A-Za-z_]
+ident_start = [A-Za-z_\u4e00-\u9fa5]
 
-ident_part  = [A-Za-z0-9_]
+ident_part  = [A-Za-z0-9_$\u4e00-\u9fa5\u00C0-\u017F]
 
 // to support column name like `cf1:name` in hbase
 column_part  = [A-Za-z0-9_:]
diff --git a/pegjs/flinksql.pegjs b/pegjs/flinksql.pegjs
index ae5f8a6e..098511f6 100644
--- a/pegjs/flinksql.pegjs
+++ b/pegjs/flinksql.pegjs
@@ -2796,9 +2796,9 @@ ident_name
       return start + parts.join('');
     }
 
-ident_start = [A-Za-z_]
+ident_start = [A-Za-z_\u4e00-\u9fa5]
 
-ident_part  = [A-Za-z0-9_\-]
+ident_part  = [A-Za-z0-9_\-$\u4e00-\u9fa5\u00C0-\u017F]
 
 // to support column name like `cf1:name` in hbase
 column_part  = [A-Za-z0-9_]
diff --git a/pegjs/hive.pegjs b/pegjs/hive.pegjs
index 723cf352..b94066e9 100644
--- a/pegjs/hive.pegjs
+++ b/pegjs/hive.pegjs
@@ -1921,9 +1921,9 @@ column_name
 ident_name
   =  start:ident_start parts:ident_part* { return start + parts.join(''); }
 
-ident_start = [A-Za-z_]
+ident_start = [A-Za-z_\u4e00-\u9fa5]
 
-ident_part  = [A-Za-z0-9_]
+ident_part  = [A-Za-z0-9_$\u4e00-\u9fa5\u00C0-\u017F]
 
 // to support column name like `cf1:name` in hbase
 column_part  = [A-Za-z0-9_:]
diff --git a/pegjs/mariadb.pegjs b/pegjs/mariadb.pegjs
index 5b0a463c..f1daf2f3 100644
--- a/pegjs/mariadb.pegjs
+++ b/pegjs/mariadb.pegjs
@@ -2940,9 +2940,9 @@ column_name
 ident_name
   =  start:ident_start parts:ident_part* { return start + parts.join(''); }
 
-ident_start = [A-Za-z_]
+ident_start = [A-Za-z_\u4e00-\u9fa5]
 
-ident_part  = [A-Za-z0-9_$]
+ident_part  = [A-Za-z0-9_$$\u4e00-\u9fa5\u00C0-\u017F]
 
 // to support column name like `cf1:name` in hbase
 column_part  = [A-Za-z0-9_:]
diff --git a/pegjs/mysql.pegjs b/pegjs/mysql.pegjs
index 80e6b62d..c25a275a 100644
--- a/pegjs/mysql.pegjs
+++ b/pegjs/mysql.pegjs
@@ -3231,7 +3231,7 @@ column_name
 ident_name
   =  start:ident_start parts:ident_part* { return start + parts.join(''); }
 
-ident_start = [A-Za-z_]
+ident_start = [A-Za-z_\u4e00-\u9fa5]
 
 ident_part  = [A-Za-z0-9_$\u0080-\uffff]
 
diff --git a/pegjs/transactsql.pegjs b/pegjs/transactsql.pegjs
index 5100539b..765c02e0 100644
--- a/pegjs/transactsql.pegjs
+++ b/pegjs/transactsql.pegjs
@@ -2421,7 +2421,8 @@ column_ref
         obj.db = db[0]
         obj.schema = schema[0]
       }
-      columnList.add(`select::${[obj.db, obj.schema, obj.table].join('.')}::${col}`);
+      const fullTableName = [obj.db, obj.schema, obj.table].filter(Boolean).join('.') || 'null'
+      columnList.add(`select::${fullTableName}::${col}`);
       return {
         type: 'column_ref',
         ...obj,
@@ -2524,9 +2525,9 @@ ident_name_list
     return createList(head, tail)
   }
 
-ident_start = [A-Za-z_@#]
+ident_start = [A-Za-z_@#\u4e00-\u9fa5]
 
-ident_part  = [A-Za-z0-9_\-@$]
+ident_part  = [A-Za-z0-9_\-@$$\u4e00-\u9fa5\u00C0-\u017F]
 
 // to support column name like `cf1:name` in hbase
 column_part  = [A-Za-z0-9_:]
diff --git a/pegjs/trino.pegjs b/pegjs/trino.pegjs
index dc998e79..ea0019b9 100644
--- a/pegjs/trino.pegjs
+++ b/pegjs/trino.pegjs
@@ -3551,7 +3551,7 @@ ident_name
       return start + parts.join('');
     }
 
-ident_start = [A-Za-z_]
+ident_start = [A-Za-z_\u4e00-\u9fa5]
 
 ident_part  = [A-Za-z0-9_$\u0080-\uffff]
 
diff --git a/test/transactsql.spec.js b/test/transactsql.spec.js
index d400b7f1..0f57c279 100644
--- a/test/transactsql.spec.js
+++ b/test/transactsql.spec.js
@@ -374,7 +374,21 @@ describe('transactsql', () => {
         'SELECT * INTO #temp_table FROM tableName',
         'SELECT * INTO [#temp_table] FROM [tableName]'
       ]
-    }
+    },
+    {
+      title: 'convert function',
+      sql: [
+        'SELECT	a.username FROM	users a WHERE	a.end_time = CONVERT(VARCHAR,getdate(),23)',
+        'SELECT [a].[username] FROM [users] AS [a] WHERE [a].[end_time] = CONVERT([VARCHAR], getdate(), 23)',
+      ]
+    },
+    {
+      title: 'column as chinese name',
+      sql: [
+        'SELECT	a.username 姓名 FROM	users a',
+        'SELECT [a].[username] AS [姓名] FROM [users] AS [a]'
+      ]
+    },
   ]
   SQL_LIST.forEach(sqlInfo => {
     const { title, sql } = sqlInfo