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Views"Where clause" is not working in AWS Athena
I used AWS Glue Console to create a table from S3 bucket in Athena. You can see a relevant part on the screenshot above. I obfuscated column name, so assume the column name is "a test column". I would like to select the records with value D in that column. The query I tried to run is:
SELECT
*
FROM
table
WHERE
"a test column" = "D"
Nothing is returned. I also tried to use IS instead of =, as well as to surround D with single quotes instead of double quotes within the WHERE clause:
-- Tried this
WHERE
"a test column" = 'D'
-- Tried this
WHERE
"a test column" IS "D"
-- Tried this
WHERE
"a test column" IS 'D'
Nothing works. Can someone help? Thank you.
The error message I got is
Mismatched input 'where' expecting (service: amazon athena; status code: 400; error code: invalid request exception; request id: 8f2f7c17-8832-4e34-8fb2-a78855e3c17d)
2 answers
Answer question0
Problem with the query syntax. Use single quotes (') when you refer to a string values, because double quotes refer to a column name in your table.
SELECT
*
FROM
table
WHERE
"column_name" = 'D'
0
The unexpected answer (also apologize if I did not say it clearly in the original post) is that, I cannot add "limit 200" in front of the where clause. I have to add it in the end. Hope it helps others.