improved odps parser support

src/main/java/com/alibaba/druid/sql/dialect/odps/visitor/OdpsOutputVisitor.java

@@ -290,7 +290,13 @@ public class OdpsOutputVisitor extends HiveOutputVisitor implements OdpsASTVisit
 
     @Override
     public boolean visit(SQLJoinTableSource x) {
-        x.getLeft().accept(this);
+        SQLTableSource left = x.getLeft();
+        left.accept(this);
+
+        if (left.hasAfterComment() && isPrettyFormat()) {
+            println();
+            printlnComment(left.getAfterCommentsDirect());
+        }
 
         if (x.getJoinType() == JoinType.COMMA) {
             print(',');

src/main/java/com/alibaba/druid/sql/parser/SQLExprParser.java

@@ -3032,6 +3032,10 @@ public class SQLExprParser extends SQLParser {
     public SQLExpr orRest(SQLExpr expr) {
         for (;;) {
             if (lexer.token == Token.OR) {
+                if (lexer.isKeepComments() && lexer.hasComment()) {
+                    expr.addAfterComment(lexer.readAndResetComments());
+                }
+
                 lexer.nextToken();
                 SQLExpr rightExp = xor();
 

src/main/java/com/alibaba/druid/sql/parser/SQLSelectParser.java

@@ -1132,6 +1132,12 @@ public class SQLSelectParser extends SQLParser {
     }
 
     public SQLTableSource parseTableSourceRest(SQLTableSource tableSource) {
+        if (lexer.hasComment()
+                && lexer.isKeepComments()
+                && !(tableSource instanceof SQLSubqueryTableSource)) {
+            tableSource.addAfterComment(lexer.readAndResetComments());
+        }
+
         if (tableSource.getAlias() == null || tableSource.getAlias().length() == 0) {
             Token token = lexer.token;
             long hash;