我正在用Flask开发一个网络应用程序。我的数据存储在BigQuery中。我想写sql查询的基础上,用户选择从html输入界面。Click here to see my Data Table in BigQuery
目前,我正在对我想要查询的输入进行硬编码,在本例中是"Glycol_Supply“,但我希望用户从HTML输入中进行选择,并根据该输入显示结果。
def queryBuilder():
query = """SELECT Record_Start_Time, Glycol_Supply
FROM Furnace_Output.DataTable
WHERE Record_Start_Time BETWEEN TIMESTAMP("{}")
AND TIMESTAMP("{}")
ORDER BY Record_Start_Time
LIMIT 100""".format(request.form['start'],request.form['end'])
return query
用户将从HTML输入界面中选择:
<form action="{{ url_for('query') }}" method="post">
<p>Query Database</p>
<select name ="Data Points " id="Data Points" widht="300px" required/>
<option value="Record_Start_Time ">Record Start Time</option>
<option value="Glycol_Supply ">Glycol Supply</option>
<option value=" Glycol_Return ">Glycol Return</option>
</select>
<p>Start Time <input type = "text" name = "start" /></p>
<p>End Time <input type = "text" name = "end" /></p>
<input type="submit">
</form>
发布于 2018-08-17 03:23:23
这应该是可行的:
def queryBuilder():
query = """SELECT Record_Start_Time, {}
FROM Furnace_Output.DataTable
WHERE Record_Start_Time BETWEEN TIMESTAMP("{}")
AND TIMESTAMP("{}")
ORDER BY Record_Start_Time
LIMIT 100""".format(request.form['Data Points'] ,
request.form['start'],request.form['end'])
return query
https://stackoverflow.com/questions/51862151
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