I want to parse the JSON column in Athena but I have a problem in one column. The column includes an escape character. I don’t know if this problem. I want to reach to Message. You can see below sample data and Message under Return. Thanks This is the JSON. Answer If you take only the object which contains return
Tag: python
Select some datetime from base
I have a 2 table in my base. The first table is reservation table. The start_ts and end_ts are time when start and end the reservation of desk (desk_id): [Reservation_table] The second is motion, which come from sensors motion. [Motion_table] This 2 tables are connecting that the sensors are start save to the base when someone come to desk (desk_id).
how to iterate through geojson elements
i want to execute the code in this question https://gis.stackexchange.com/questions/142391/storing-geojson-featurecollection-to-postgresql-with-postgis/142479#142479 but when i run the app i receive the following error: please let me know how to fix it. code: attempts: Answer From the database perspective the query works just fine, but the issue seems to be in the query building. Your query has a JSON document containing multiple “
How to execute custom logic at pyspark window partition
I have a dataframe in the format shown below, where we will have multiple entries of DEPNAME as shown below, my requirement is to set the result = Y at the DEPNAME level if either flag_1 or flag_2= Y, if both the flag i.e. flag_1 and flag_2 = N the result will be set as N as shown for DEPNAME=personnel
Python code to send data from I2C sensor to a local SQL database
I am working on a system of I2C sensors connected together and communicating to a raspberry pi4B. With the code below I am able to save the measurements in a excel file. I would like to store them in a table inside a sql database that I have created locally on my laptop. What should I change in this code?
Cannot INSERT strings with Set Clause with mariadb connector (python)
I want to insert a new row in my table by using the python-mariadb connector. For that I prefer to use the SET clause. For some reason it does work if I only want to save ints (i.e y=2), but when I use a string, the following error occurs Unknown column ‘myString’ in ‘field list’ It seems it thinks the
Compare date of input type datetime with date in SQL using flask
I use this .html page to get input type datetime: And my .py code: my DB: DB Example I want to show only all data of ‘sessioncreate’ when only date of ‘sdate’ equal of today date How can i achieve that? Answer Use the DATE() function. This way you can convert the DATETIME in your database to DATE and easily
First row of all groups in Flask SQLAlchemy
I want to group the database by gauge_id and then get the row having maximum time_col. This is my current code: But I am only able to get both gauge_id and time_col. When I add another column (reading), like this: it gives this error. How do I return the top row of each groups? Thanks in advance. Answer One way
How to create a complex aggregate function in sqlite
Suppose I have the following table where there are two sets of observation dates (2015-01-01, 2016-01-01) in the first column. For each observation date, there are associated item_date and item_value. observation_date item_date item_value 2015-01-01 2012-12-31 0 2015-01-01 2013-03-31 1 2015-01-01 2013-06-30 2 2015-01-01 2013-09-30 3 2015-01-01 2013-12-31 4 2015-01-01 2014-03-31 5 2015-01-01 2014-06-30 6 2015-01-01 2014-09-30 7 2016-01-01 2013-09-30 8
None-unique column index error using cur.fetch_pandas_all() to extract data from Snowflake
I’m pulling results from Snowflake using the code below. The SQL statement returns fine in Snowflake Web UI but when pulled in Python I get a ValueError: Found non-unique column index If this happened in my Pandas workflow, I would reset_index() but, as its happening at the point of the dataframe being created I’m unsure how to fix this. As