improve sql parser hive & odps support

core/src/main/java/com/alibaba/druid/sql/dialect/hive/parser/HiveExprParser.java

@@ -90,6 +90,11 @@ public class HiveExprParser extends SQLExprParser {
                     lexer.nextToken();
                     Number num = ((SQLNumericLiteralExpr) expr).getNumber();
                     expr = new SQLDecimalExpr(num.toString());
+                } else if (lexer.identifierEquals(FnvHash.Constants.DAYS)) { // hortonworks
+                    lexer.nextToken();
+                    SQLIntervalExpr intervalExpr = new SQLIntervalExpr();
+                    intervalExpr.setValue(expr);
+                    intervalExpr.setUnit(SQLIntervalUnit.DAY);
                 }
                 break;
             default:

core/src/main/java/com/alibaba/druid/sql/parser/Lexer.java

@@ -2580,8 +2580,17 @@ public class Lexer {
         }
 
         int start = pos;
-        for (;;) {
+        for (; ; ) {
             if (ch == ' ' || ch == '\r' || ch == '\n' || ch == EOI) {
+                while (pos < text.length() - 1) {
+                    char c1 = text.charAt(pos);
+                    if (c1 == ' ' || c1 == '\r' || c1 == '\n' || c1 == '\t') {
+                        pos++;
+                        continue;
+                    }
+                    break;
+                }
+
                 String arg = text.substring(start, pos);
                 arg = arg.trim();
                 if (arg.length() > 0) {