code: public SqlBuilder delete(String tableName) {
  		if (StrUtil.isBlank(tableName)) {
  			throw new DbRuntimeException("Table name is blank !");
  		}
  
  		if (null != wrapper) {
  			// 包装表名
  			tableName = wrapper.wrap(tableName);
  		}
  
  		sql.append("DELETE FROM ").append(tableName);
  
  		return this;
  	}
docs: 删除
  
  @param tableName 表名
  @return 自己