I have two dataset as following: and: I want to join two datasets so that I could get ingredient information for each smoothie whose price is lower than 15$, but keep those even if the price is higher, and fill in with a string To be communicated for the ingredient field. I tried smoothieDs.join(ingredientDs)…
Tag: sql
How can I find time interval between 00:00:00 and 23:28:05 without date in PostgreSQL
So I have this table where I’ve got two times for each line, but no date and need to get the interval between those two, all is fine when it’s: 11:00:00 – 09:38:54 Returns: 01:21:06 As there’s no dates, times are stored in “time without time zone” format. The problem arises…
How do I get results from past 1 hour in sql
I have this query to get all caseids that are less than 10 chars and do not have a T in front from the past hour: But when I run this I will still get results from days ago. What could I be doing wrong here? Answer Don’t convert to a string. Just use date comparisons:
MySQL – category with product count not showing all results
I am trying to display the count of products along with the category name in the category list. I was able to achieve this with JOIN, but not all categories are displayed. I mean the categories with 0 products were not displayed, but I changed the JOIN to LEFT JOIN which displayed only one category with 0 pro…
BigQuery SQL: How to find missing Values on comparing two tables over date range?
Have got two Bigquery tables as shown below: Table 1: Table 2: Scenario: Have to find missing Stores of Table 1 for each date comparing with Table 2 Stores. Expected Output: To list each missing Stores for each date on comparing. Tried Query: But this query doesn’t shows up the respective Report_Date, i…
How to solve deadlock when inserting rows in sql many-to-many relationship with minimum cardinality one restriction?
This year I’ve been learning about relational databases and how to design them. In order to strenghten my knowledge, I’m trying to design and implement a database using Python and sqlite3. The database is about a textile company, and, among other thigs, they want to keep information about the foll…
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?
Can’t write SqlAlchemy query with contains operation
Let’s say that we have a two tables: Movie and Genre. Genre has an attribute genres which is a PostgreSQL ARRAY of genre ids. I have written a query to get all movie ids with genre names. But sadly I am getting: So, how can I rewrite my query to get what I want? Answer Remove the square brackets []
mysql get all table privileges for a user
I have the following query that I run against a postgresql DB whose intent is to return all the tables in a given schema for which the user does NOT have SELECT privileges How would I construct a similar query for use against a mysql database? mysql doesn’t have a has_table_privilege() function Answer T…
Unable to pull data for todays date (where statements worked on other tables)
I am trying to pull data for today’s date in the timestamp column only. The ‘where’ statement I am using worked for my other table, but this is still pulling old data. I have been trying a bunch of other methods but I think they may not be working because of the timestamp data and not just t…