问题
I have deployed my webapp on Google Cloud Bigquery, when I query the data I get an error "400 No matching signature for operator BETWEEN for argument types: DATE, STRING, STRING. Supported signature: (ANY) BETWEEN (ANY) AND (ANY) at [2:38]". Here is my sql:
"""SELECT
Record_Start_Time, Generator_Power
FROM
Furnace.FurnaceData
WHERE
Record_Start_Time BETWEEN TIMESTAMP("2018-01-21")
AND
TIMESTAMP("2018-07-21")
ORDER BY Record_Start_Time
LIMIT 100""".format(request.form['start'],request.form['end'])
回答1:
According to the error message you are getting (which, I agree with the comments in your question, is strange and I suspect does not correspond to this specific query), it looks like the field Record_Start_Time is of type DATE, while in the BETWEEN operator you are using TIMESTAMP values instead.
The way you should understand the error message you are getting, is the following:
[...] operator BETWEEN for argument types: DATE, STRING, STRING. Supported signature: (ANY) BETWEEN (ANY) AND (ANY)
This error means that the supported signature for the BETWEEN operator is field BETWEEN a AND b, where field, a and b should be of the same type (ANY). Additionally, the error message tells you that you are doing the following: _DATE_ BETWEEN _STRING_ AND _STRING_, i.e. you are trying to compare a DATE type with a STRING type. This looks strange because TIMESTAMP("2018-01-21") is of TIMESTAMP type and not STRING, but I would say that maybe you tried in the past running a query like WHERE Record_Start_Time BETWEEN "2018-01-21" AND "2018-07-21", and the error message you shared is the one corresponding to that query. For the query you shared, the error message should be:
400 No matching signature for operator BETWEEN for argument types: DATE, TIMESTAMP, TIMESTAMP. Supported signature: (ANY) BETWEEN (ANY) AND (ANY) at [2:38]
Long story short, confirm that the Record_Start_Time field is of DATE type and being that the case, change your WHERE clause to the following:
WHERE
Record_Start_Time BETWEEN DATE("2018-01-21")
AND
DATE("2018-07-21")
来源：https://stackoverflow.com/questions/51214576/bigquery-error-400-no-matching-signature-for-operator-between-for-argument-type