Another example (with first name and last name), same principal Dudu
Given the following table: id, first_name,last_name ______________________ 1,Dudu,Markovitz 2,Andrew,Sears select id,key,value from my_table lateral view explode (map('fname',first_name,'lname',last_name)) t; The result will look like: Id,key,value ______________________ 1,fname,Dudu 1,lname,Markovitz 2,fname, Andrew 2,lname, Sears From: Deepak Khandelwal [mailto:dkhandelwal....@gmail.com] Sent: Saturday, April 23, 2016 9:04 AM To: user@hive.apache.org Subject: Hive query to split one row into many rows such that Row 1 will have col 1 Name, col 1 Value and Row 2 will have col 2 Name and col 2 value Hi All, I am new to Hive and I am trying to create a query for below aituation. Would appreciate if someone could guide on same. Thans a lot in advance. I have two TABLES shown below TABLE1 (USER_dETAILS) **USER_ID** | **USER_NAME** | **USER_ADDRESS** ------------+------------------+---------------- 1 USER1 ADDRESS111 2 USER2 ADDRESS222 TABLE2 (USER_PARAMETERS) **USER_ID** | **PARAM_NAME** | **PARAM_VALUE** ------------+------------------+------------------ 1 USER_NAME USER1 1 USER_ADDRESS ADDRESS111 2 USER_NAME USER2 2 USER_ADDRESS ADDRESS222 I need to insert data in table2(USER_PARAMETERS) FROM table1(USER_DETAILS) in the format shown above. I can do this using UNION ALL but I want to avoid it as there are like 10 such columns that i need to split like above. Can someone suggest a efficient hive query so that i can achieve the results shown in table 2 from data in table 1 (Hive query to split one row of data into multiple rows like such that Row 1 will have column1 Name, column1 Value and Row 2 will have column 2 Name and column 2 value...). Thanks a lot Deepak