处理关键字段删除报错问题，进行转义

 Source/UBCS/ubcs-service/ubcs-ddl/src/main/java/com/vci/ubcs/ddl/mapper/DdlDmMapper.java

@@ -17,7 +17,7 @@
     * @param columnName 列名称
     * @return 受影响的行数
     */
    @Update("alter table ${tableName} DROP COLUMN ${columnName}")
    @Update("alter table ${tableName} DROP COLUMN \"${columnName}\"")
    @Override
    int dropTableColumn(@Param("tableName")String tableName, @Param("columnName")String columnName);


 Source/UBCS/ubcs-service/ubcs-ddl/src/main/java/com/vci/ubcs/ddl/processor/ddl/DdlMapperProcessor.java

@@ -152,6 +152,6 @@
     * @return 受影响的行数
     */
    public int dropTableColumn(String tableName,String columnName){
        return mapper.dropTableColumn(tableName,columnName);
        return mapper.dropTableColumn(tableName,columnName.toUpperCase());
    }
}