如何在基於MySQL表的Talend open studio中生成多個格式文件？

Question

我需要從MYSQL數據庫中提取數據並根據數據創建格式化文件。 Talend開放工作室如何做到這一點？

MySQL DB有一個表（user_id，order_id，purchase_date），我需要爲每個用戶生成csv文件包含他的訂單。文件名應該有USER_ID（輸出文件也能像user_id.csv）

感謝

Answer 1

You can try below - 
tMysqlInput--->tFlowToIterate---(iterate)-->tMysqlInput--->tFileOutputDelimited 

More details given below - 
tmysqlInput(select user_id from table group by user_id) --- row Main ---> tFlowToIterate (uncheck use the default key option, create a new key called user_id and set value to user_id in dropdown) ----- Iterate -----> tmysqlInput(sql = "select user_id, order_id,purchase_date from table where user_id=((String)globalMap.get("user_id))") ----- row main ----> tFileOutputDelimited(set filename = (String)globalMap.get("user_id))+".csv"). 

     to summarize - you first get list of all distinct user_id then you iterate through each of them and again fetch orders for each user_id by applying filter and use this user_id value from global variable into filename..