content: package com.alibaba.druid.bvt.filter.wall.mysql;
  
  import com.alibaba.druid.wall.WallProvider;
  import com.alibaba.druid.wall.spi.MySqlWallProvider;
  import junit.framework.TestCase;
  
  public class MySqlWallTest146 extends TestCase {
      public void test_false() throws Exception {
          WallProvider provider = new MySqlWallProvider();
  
          String sql = "ALTER TABLE project_measures\n" +
                  "        DROP COLUMN diff_value_1,\n" +
                  "        DROP COLUMN diff_value_2,\n" +
                  "        DROP COLUMN diff_value_3,\n" +
                  "        ADD COLUMN variation_value_1 DECIMAL(30, 20) NULL DEFAULT NULL,\n" +
                  "        ADD COLUMN variation_value_2 DECIMAL(30, 20) NULL DEFAULT NULL,\n" +
                  "        ADD COLUMN variation_value_3 DECIMAL(30, 20) NULL DEFAULT NULL,\n" +
                  "        ADD COLUMN variation_value_4 DECIMAL(30, 20) NULL DEFAULT NULL,\n" +
                  "        ADD COLUMN variation_value_5 DECIMAL(30, 20) NULL DEFAULT NULL";
          assertTrue(
                  provider.checkValid(sql)
          );
      }
  }
  