动态mysql枢纽分析表失败

如何解决动态mysql枢纽分析表失败

X_train = data_consumption[:'2019'].drop(['DAILY_AQI_VALUE'],axis = 1)
y_train = data_consumption.loc[:'2019','DAILY_AQI_VALUE']

上面是从中获得ID和ID或手机号码（AssertionError Traceback (most recent call last) <ipython-input-64-b7ef74aa038e> in <module> ----> 1 X_train = data_consumption[:'2019-01'].drop(['DAILY_AQI_VALUE'],axis = 1) 2 y_train = data_consumption.loc[:'2016','DAILY_AQI_VALUE'] ~\.conda\envs\UU_Smog\lib\site-packages\pandas\core\frame.py in __getitem__(self,key) 2883 # either we have a slice or we have a string that can be converted 2884 # to a slice for partial-string date indexing -> 2885 return self._slice(indexer,axis=0) 2886 2887 # Do we have a (boolean) DataFrame? ~\.conda\envs\UU_Smog\lib\site-packages\pandas\core\generic.py in _slice(self,slobj,axis) 3555 Slicing with this method is *always* positional. 3556 """ -> 3557 assert isinstance(slobj,slice),type(slobj) 3558 axis = self._get_block_manager_axis(axis) 3559 result = self._constructor(self._mgr.get_slice(slobj,axis=axis)) AssertionError: <class 'numpy.ndarray'> 是CREATE TABLE `tUSER` ( `id` bigint(20) NOT NULL AUTO_INCREMENT,`id_number` varchar(20) NOT NULL,`first_names` varchar(100) NOT NULL,`last_name` varchar(100) NOT NULL PRIMARY KEY (`id`),INDEX( `id_number`,`first_names`,`last_name`) ) CREATE TABLE `tPROFILE` ( `id` bigint(20) NOT NULL AUTO_INCREMENT,`tUSER_id` bigint(20) DEFAULT NULL,`tTYPES_id` bigint(20) DEFAULT NULL,`value` varchar(100) NOT NULL,PRIMARY KEY (`id`),UNIQUE KEY `unique_index` (`tUSER_id`,`tTYPES_id`),INDEX( `tUSER_id`,`tTYPES_id`,`value`) ) CREATE TABLE `tTYPES` ( `id` bigint(20) NOT NULL AUTO_INCREMENT,`type` varchar(100) NOT NULL DEFAULT '',`description` varchar(255) NOT NULL,`deleted` tinyint(1) NOT NULL DEFAULT '0',FULLTEXT( `type`,`description`) ) 表中的记录）时需要获取数据透视表的架构

我的静态数据透视表有效，因为我已经填充了表格并知道了类型

Cellphone

我需要一个动态数据透视查询，因为我永远不会知道类型 以下是我目前的工作，但它告诉我无法解决的语法错误

tTYPES

错误

select tUSER.*,max(CASE WHEN tTYPES.type = 'msisdn' THEN tPROFILE.value ElSE 0 END) AS 'msisdn',max(CASE WHEN tTYPES.type = 'network' THEN tPROFILE.value ELSE 0 END) AS 'network',max(CASE WHEN tTYPES.type = 'points' THEN tPROFILE.value ELSE 0 END) AS 'points',max(CASE WHEN tTYPES.type = 'card number' THEN tPROFILE.value ELSE 0 END) AS 'card number',max(CASE WHEN tTYPES.type = 'gender' THEN tPROFILE.value ELSE 0 END) AS 'gender'
 from e1m_test.tUSER 
inner join e1m_test.tPROFILE on tPROFILE.tUSER_id = tUSER.id
inner join e1m_test.tTYPES on tPROFILE.tTYPES_id = tTYPES.id
where tUSER.id = 312

任何帮助或指导都将受到欢迎

解决方法

大概tTYPE中有一些类型与MySQL关键字（例如，number是一种语言关键字）冲突。您需要使用反引号将这些标识符引起来。

其他建议：

• 我看不到为什么在生成条件表达式的查询中需要表tPROFILE的原因；相应地，distinct在group_concat()

  中似乎是不必要的

• 我建议对字符串文字使用单引号而不是双引号-尽管MySQL允许这样做，但它与ANSI SQL标准有所不同，因为没有附加值（您只需要适当地转义嵌入式单引号即可）

• 无需在concat()中使用group_concat()；聚合函数愉快地接受一个参数列表，并且似乎将它们连接起来

所以：

SET @sql = NULL;
SELECT GROUP_CONCAT( 
    'MAX(CASE WHEN tTYPES.type=''',tTYPES.type,''' THEN tPROFILE.value ELSE 0 END) AS `','`'
) INTO @sql
FROM tTYPES;

SET @sql = CONCAT('select tUSER.*,',@sql,' 
    from tUSER 
    left join tPROFILE on tPROFILE.tUSER_id = tUSER.id
    left join tTYPES on tPROFILE.tTYPES_id = tTYPES.id
    where tUSER.id = 312'
);

-- debug your query before running it!
-- SELECT @sql;           
           
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;