如何在java JDBC的帮助下运行多个Delete sql语句？

Question

我想一次删除三个不同的表,我已经创建了一个非常简单的SQL语句,如下所示:

DELETE FROM tbl1;DELETE FROM tbl2;DELETE FROM tbl3;

当我直接在mysql中运行时,这句话是正确的但是从java不行!

我的java代码:

public boolean clearTables()
     {
         boolean ans = false;
         if (con != null)
         {
             try
             {
                String deleteQuery = "    DELETE FROM tbl1;DELETE FROM tbl2;DELETE FROM tbl3;";
                Statement st = con.createStatement();
                st.execute(deleteQuery);

                ans = true;
             }
             catch (Exception e) 
             {
                e.printStackTrace();
                ans= false;
             }
         }
         return ans;
     }

如何在java中一次运行多个SQL语句？

Answer 1

addBatch然后使用executeBatch:

   Statement st = con.createStatement();
   st.addBatch("DELETE FROM tbl1");
   st.addBatch("DELETE FROM tbl2");
   st.addBatch("DELETE FROM tbl3");
   int[] results = st.executeBatch();

然后results将包含一个数组,其中包含从每个表中删除的行数.