1 修复 OracleOutputVisitor.java 在输出hint时候 输出错误

2 hint必须放在select后面否则走不上索引
3 统一分隔，所有符号后面加一个空格

src/main/java/com/alibaba/druid/sql/dialect/oracle/visitor/OracleOutputVisitor.java

@@ -566,8 +566,12 @@ public class OracleOutputVisitor extends SQLASTOutputVisitor implements OracleAS
     }
 
     public boolean visit(OracleSelectQueryBlock x) {
-        print("SELECT ");
+        print("SELECT ");       
 
+        if (x.getHints().size() > 0) {           
+            printAndAccept(x.getHints(), ", ");           
+        }
+        
         if (SQLSetQuantifier.ALL == x.getDistionOption()) {
             print("ALL ");
         } else if (SQLSetQuantifier.DISTINCT == x.getDistionOption()) {
@@ -576,12 +580,6 @@ public class OracleOutputVisitor extends SQLASTOutputVisitor implements OracleAS
             print("UNIQUE ");
         }
 
-        if (x.getHints().size() > 0) {
-            print("/*+");
-            printAndAccept(x.getHints(), ", ");
-            print("*/ ");
-        }
-
         printSelectList(x.getSelectList());
 
         if (x.getInto() != null) {

src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java

@@ -1301,7 +1301,7 @@ public class SQLASTOutputVisitor extends SQLASTVisitorAdapter {
     public boolean visit(SQLCommentHint x) {
         print("/*");
         print(x.getText());
-        print("*/");
+        print("*/ ");
         return false;
     }