support doubleQuote

src/main/java/com/alibaba/druid/sql/ast/expr/SQLLiteralExpr.java

@@ -18,6 +18,5 @@ package com.alibaba.druid.sql.ast.expr;
 import com.alibaba.druid.sql.ast.SQLExpr;
 
 public interface SQLLiteralExpr extends SQLExpr {
-
-
+    
 }

src/main/java/com/alibaba/druid/sql/dialect/odps/parser/OdpsExprParser.java

@@ -15,6 +15,8 @@
  */
 package com.alibaba.druid.sql.dialect.odps.parser;
 
+import com.alibaba.druid.sql.ast.SQLExpr;
+import com.alibaba.druid.sql.ast.expr.SQLCharExpr;
 import com.alibaba.druid.sql.parser.Lexer;
 import com.alibaba.druid.sql.parser.SQLExprParser;
 
@@ -41,4 +43,8 @@ public class OdpsExprParser extends SQLExprParser {
         this(new OdpsLexer(sql));
         this.lexer.nextToken();
     }
+    
+    protected SQLExpr parseAliasExpr(String alias) {
+        return new SQLCharExpr(alias);
+    }
 }

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

@@ -560,7 +560,7 @@ public class SQLExprParser extends SQLParser {
                 sqlExpr = allExpr;
                 break;
             case LITERAL_ALIAS:
-                sqlExpr = new SQLIdentifierExpr('"' + lexer.stringVal() + '"');
+                sqlExpr = parseAliasExpr(lexer.stringVal());
                 lexer.nextToken();
                 break;
             case EOF:
@@ -579,6 +579,10 @@ public class SQLExprParser extends SQLParser {
 
         return primaryRest(sqlExpr);
     }
+    
+    protected SQLExpr parseAliasExpr(String alias) {
+        return new SQLIdentifierExpr('"' + alias + '"');
+    }
 
     protected SQLExpr parseInterval() {
         throw new ParserException("TODO");

src/test/java/com/alibaba/druid/bvt/sql/odps/OdpsDoubleQuoteTest.java

@@ -0,0 +1,42 @@
+package com.alibaba.druid.bvt.sql.odps;
+
+import java.util.List;
+
+import junit.framework.TestCase;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.odps.parser.OdpsStatementParser;
+import com.alibaba.druid.sql.dialect.odps.visitor.OdpsSchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+import com.alibaba.druid.stat.TableStat.Column;
+
+
+public class OdpsDoubleQuoteTest extends TestCase {
+    public void test_0() throws Exception {
+        String sql = "SELECT my_udtf(1,2,3) as (a, b, c) from employee t1 WHERE t1.name = \"aaa\";";
+
+        OdpsStatementParser parser = new OdpsStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        Assert.assertEquals(1, statementList.size());
+
+        OdpsSchemaStatVisitor visitor = new OdpsSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        System.out.println("Tables : " + visitor.getTables());
+        System.out.println("fields : " + visitor.getColumns());
+        System.out.println("coditions : " + visitor.getConditions());
+        System.out.println("orderBy : " + visitor.getOrderByColumns());
+
+        Assert.assertEquals(1, visitor.getTables().size());
+        Assert.assertEquals(1, visitor.getColumns().size());
+        Assert.assertEquals(1, visitor.getConditions().size());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("employee")));
+
+        Assert.assertTrue(visitor.getColumns().contains(new Column("employee", "name")));
+    }
+}