元数据库筛选器示例

java mysql metabase

2022-09-04 03:49:13

我正在使用与Mysql集成的元数据库进行报告。我浏览了文档，但找不到任何示例来解释如何在基于SQL的问题中实现过滤器。

我发现的唯一例子是关于日期范围和字段过滤器，而不是文本和数字。

任何人都可以提供有关如何使用文本过滤器的文档或任何示例。

我使用的是元数据库版本 v0.24.2

我正在尝试运行的查询是这样的

 SELECT  @a:=@a+1 "Serial Number", ssk_transaction.transactionId AS "TranId",   
t2.typeName AS "Transaction Type",  
ssk_transaction.createdTime AS "GenDate", t3.deviceName AS "Machine Name",  
 t3.deviceLocation AS "Machine Location", t9.eventApiName AS 'API Name' ,  
t8.vendorResultCode AS 'Last API Response',  
(SELECT createdTime FROM ssk_transaction_event_detail t4 WHERE t4.transactionId  
 = ssk_transaction.transactionId ORDER BY id DESC LIMIT 1) AS "Last API Called",  
(SELECT IFNULL(SUM(t5.itemName * t4.itemCount), 0) FROM  
 ssk_transaction_cash_detail t4  
LEFT JOIN ssk_inventory_item t5 ON (t4.itemId = t5.itemId)  
LEFT JOIN ssk_inventory_category t10 ON (t5.categoryId = t10.categoryId)  
WHERE t4.transactionId = ssk_transaction.transactionId AND t10.categoryName =   'acceptor') "Cash In",  
(SELECT IFNULL(SUM(t5.itemName * t4.itemCount), 0) FROM       ssk_transaction_cash_detail t4  
LEFT JOIN ssk_inventory_item t5 ON (t4.itemId = t5.itemId)  
LEFT JOIN ssk_inventory_category t10 ON (t5.categoryId = t10.categoryId)  
WHERE t4.transactionId = ssk_transaction.transactionId AND t10.categoryName =   'dispenser') "Cash Returned",  
IFNULL((SELECT "Cash In"), 0) - IFNULL((SELECT "Cash Returned"), 0) AS "Amount   of Activity",  
(SELECT t8.vendorResultCode FROM ssk_transaction_event_detail t8 WHERE       t8.transactionId = ssk_transaction.transactionId AND t8.eventId = 6 ORDER BY id       DESC LIMIT 1) AS "Sim Status",  
'Completed' AS "Transaction Status",  
ssk_transaction.customerMsisdn AS MSISDN,  
ssk_transaction.customerCNIC AS CNIC  
FROM  (SELECT @a:=0) initvars, ssk_transaction  
LEFT JOIN ssk_transaction_type t2 ON (ssk_transaction.typeId = t2.typeId)  
LEFT JOIN ssk_device t3 ON (ssk_transaction.deviceUUID = t3.deviceUUID)  
LEFT JOIN ssk_transaction_cash_detail t6 ON (ssk_transaction.transactionId =       t6.transactionId )  
LEFT JOIN ssk_inventory_item t7 ON (t6.itemId = t7.itemId)  
LEFT JOIN ssk_transaction_event_detail t8 ON (ssk_transaction.transactionId =   t8.transactionId AND t8.eventId = 10)  
LEFT JOIN ssk_transaction_event t9 ON (t9.eventId = t8.eventId)  
WHERE {{created_at}} AND {{id}} [[AND ssk_transaction.customerMsisdn=       {{msisdn}}]] AND {{cnic}} and  t2.typeId = 3 AND t8.eventId = 10 AND       t8.vendorResultCode = '405000000'  
GROUP BY ssk_transaction.transactionId  
ORDER BY ssk_transaction.createdTime ASC

答案 1

在 github 页面上以您正在使用的版本号打开问题。贡献者将帮助您进行查询，甚至提供所需的文档/ wiki。

也许这可以帮助你：

try to use CONCAT('%',{{variable}},'%') such as:

WHERE 1=1 [[ AND test LIKE CONCAT('%',{{variable}},'%') ]]

答案 2

若要创建变量，只需编写查询并以 {{variablename}} 格式为变量定义占位符，执行此操作时，元数据库将自动在右侧显示“变量”面板，并且您必须选择此变量的类型（如果提供默认值，也可以根据需要标记变量）。

您不应该对查询中的变量占位符进行转义（这就是为什么 CONCAT（'%'，{{variable}}，'%'）不起作用的原因），您可以将整个表达式标记为可选，并用双括号将其括起来。

下面的图像给出了一个查询示例：

从pg_tables中选择 *，其中 schemaname = {{schemaname}} [[ 和 tablename = {{tablename}} ]]

在此示例中，如果未为表名变量提供值，则将忽略整个表名筛选器。请注意，这两个变量都标有文本类型。