HiveQL - How to use escaped keywords in a WHERE clause?

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HiveQL - How to use escaped keywords in a WHERE clause?



I am trying to query a table by selecting only those cases that meet a certain condition. It is a query called from Beeline, within a R script.
The problem is the field that must meet this condition has a reserved word as a column name: 'table'.



Whenever I run this in an AWS-EMR cluster:



SELECT ... FROM ... WHERE `table` = 'something' AND year = 2018



I get the following error:



bash: table: command not found



Connecting to jdbc:hive2://localhost:10000



Connected to: Apache Hive (version 2.3.2-amzn-0)



Driver: Hive JDBC (version 2.3.2-amzn-0)



Transaction isolation: TRANSACTION_REPEATABLE_READ



. . . . . . . . . . . . . . . . Error: Error while compiling statement: FAILED: ParseException line 1:242 cannot recognize input near '=' ''something'' 'and' in expression specification (state=42000,code=40000)



Closing: 0: jdbc:hive2://localhost:10000



ExitValue: 1



Both blocks marked in bold style should be fixed. Notice that the keyword 'table' is already escaped with backticks.



I have searched the web, but still cannot find a proper solution. Any help would be appreciated.





What tool do you "run" that SQL query into, that bash tries to parse the SQL?!?!?
– Samson Scharfrichter
Aug 10 at 19:42


bash





Beeline called from an R script. It is crazy, I know... The magic of 'as is' projects...
– MiguelFCerdan
Aug 10 at 19:57





Short-term workaround: try escaping back-ticks i.e. `table` or maybe \`table\`
– Samson Scharfrichter
Aug 11 at 21:11



`table`


\`table\`





Long-term fix: use RJDBC to run Hive queries straight from R.
– Samson Scharfrichter
Aug 11 at 21:13



RJDBC









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