add primary key support

src/antlr4/flinksql/sqlListener.js

@@ -1775,6 +1775,15 @@ sqlListener.prototype.exitDtColType = function(ctx) {
 };
 
 
+// Enter a parse tree produced by sqlParser#dtColIdentifier.
+sqlListener.prototype.enterDtColIdentifier = function(ctx) {
+};
+
+// Exit a parse tree produced by sqlParser#dtColIdentifier.
+sqlListener.prototype.exitDtColIdentifier = function(ctx) {
+};
+
+
 // Enter a parse tree produced by sqlParser#complexColTypeList.
 sqlListener.prototype.enterComplexColTypeList = function(ctx) {
 };

src/antlr4/flinksql/sqlVisitor.js

@@ -1188,6 +1188,12 @@ sqlVisitor.prototype.visitDtColType = function(ctx) {
 };
 
 
+// Visit a parse tree produced by sqlParser#dtColIdentifier.
+sqlVisitor.prototype.visitDtColIdentifier = function(ctx) {
+  return this.visitChildren(ctx);
+};
+
+
 // Visit a parse tree produced by sqlParser#complexColTypeList.
 sqlVisitor.prototype.visitComplexColTypeList = function(ctx) {
   return this.visitChildren(ctx);