fix

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    // 使用 IntelliSense 了解相关属性。 
+    // 悬停以查看现有属性的描述。
+    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "启动程序",
+            "program": "${workspaceFolder}/index.js"
+        }
+    ]
+}

core/sqlSyntaxParser.js

@@ -3934,12 +3934,14 @@ case 1183:
      var fn = $$[$0-1].chain[$$[$0-1].chain.length - 1].name.toLowerCase(); 
      $$[$0-1].lastLoc.type = 'function';
      $$[$0-1].lastLoc.function = fn;
+     if($$[$0-1].lastLoc.location){
         $$[$0-1].lastLoc.location = {
             first_line: $$[$0-1].lastLoc.location.first_line,
             last_line: $$[$0-1].lastLoc.location.last_line,
             first_column: $$[$0-1].lastLoc.location.first_column,
             last_column: $$[$0-1].lastLoc.location.last_column - 1
         }  
+     }
      if ($$[$0-1].lastLoc !== $$[$0-1].firstLoc) {
         $$[$0-1].firstLoc.type = 'database';
      } else {

jison/comment.txt

@@ -0,0 +1,10 @@
+ColumnIdentifier
+UnsignedValueSpecification      #各种非负数字和普通字符串常量bool值
+UnsignedLiteral     #各种非负数字和普通字符串常量bool值
+ExactNumericLiteral     #非负数字和小数
+ApproximateNumericLiteral       #带有E的非负数字
+GeneralLiteral      #普通字符串常量/bool值
+RegularIdentifier		#常规标识符
+RegularOrBacktickedIdentifier	#标识符
+NonReservedKeyword		#非保留关键字
+ColumnIdentifier	#标识符和各种对象数组写法

jison/sql_main.jison

@@ -2415,12 +2415,14 @@ NonParenthesizedValueExpressionPrimary
      var fn = $1.chain[$1.chain.length - 1].name.toLowerCase(); 
      $1.lastLoc.type = 'function';
      $1.lastLoc.function = fn;
+     if($1.lastLoc.location){
         $1.lastLoc.location = {
             first_line: $1.lastLoc.location.first_line,
             last_line: $1.lastLoc.location.last_line,
             first_column: $1.lastLoc.location.first_column,
             last_column: $1.lastLoc.location.last_column - 1
         }  
+     }
      if ($1.lastLoc !== $1.firstLoc) {
         $1.firstLoc.type = 'database';
      } else {