I am not sure what is wrong with following hive query. However, it’s throwing error. I am able to run this queries individually. However, facing issues while running with union Error Answer Hive versions prior to 1.2.0 only support UNION ALL Workaround: Use UNION ALL instead of UNION, wrap all into subquery and apply distinct UNION is the same as
Tag: hive-query
Hive throwing ParseException while exporting a csv
Running this code, I am trying to export a csv but I get the following error: ParseException line 2:3 cannot recognize input near ‘MIN’ ‘(‘ ‘HIGH’ in expression specification Answer Try to add table alias (d) and use select d.* instead of select *:
Hive nested query left join
I’am new to hive and i want to implement the following query It works fine untill the last left join. Nested queries are obviously not authorized in hive. How can i approach this. Answer Use sub-query instead of joined table: Or better move last join condition inside the WHERE clause in the subquery:
Hive: Cant perform union query with limit
I am trying to run a union all query in hive but i get I also tried but i got what am i doing wrong ? Answer Use select from subquery:
Divide each value of a column by the total count of records in a table
A query that is capable of dividing each value of a column by the total number of records in the table I tried the following query I see an error and not able to execute the query. for example total records is 5 so (1/5)*100 = 20 Answer use analytic count(*) over():
Calculate time difference between two columns of string type in hive without changing the data type string
I am trying to calculate the time difference between two columns of a row which are of string data type. If the time difference between them is less than 2 hours then select the first column of that row else if the time difference is greater than 2 hours then select the second column of that row. It can be