I’m learning SQL and SQLite at the moment, and from what I understand, SQLite doesn’t support a datetime datatype. However, when I run the command PRAGMA table_info(Orders); it’s showing one column as being of type datetime. I’ve read that In SQLite, the datatype of a value is associat…
Tag: sql
Python: cx_Oracle does not like how I am entering date
I am trying to do a simple select all query in python using the Cx_oracle module. When I do a select all for the first ten rows in a table I am able to print our the output. However when I do a select all for the first ten rows for a specific date in the table all that gets
cte FULL OUTER JOIN MYSQL
I have this table(called trial): ‘year1’ refers to values in Column ‘val1’, ‘year2’ to values in Column ‘val2’. I want to get totals of all values grouped by year. So I would like to see a result like: I set up a common table expression(cte) using a self join to…
how to get the 1st day of the year sql query oracle
I need a sql query to get a 1st day of the 1st month of the year which i am passing. ex: If i am passing 2021, my output should be 01-JAN-2021 If i am passing 2020, my output should be 01-JAN-2020 Answer Assuming you are passing the year as the bind variable :year then: or
SQL CASE WHEN: is there a limit ( in number of characters )? [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 9 months ago. Improve this question I’m using the case when statement to group locations ( starting & destination lat…
Order by the Compute of Count in SQL
Hi I get the results that I’m looking for however, I want to order it by the count from the compute. Anyone have any ideas. Answer One approach is to use window functions to calculate and order by that value. The following orders the result by n descending, but doesn’t include n in the final SELEC…
Can someone clarify what is happening in this part of the code?
So I have part of code like this I have database where I have table-categories and table-items categories table and items look like this: What I don’t understand is what happens with categories and inventory in this part of code -> Do they get joined? Also in this part what item means here, there is …
Find the names of the suppliers who supply all the parts in MS Access
I have three tables: I want to find the names of the suppliers who supply all the parts in MS Access. This code does not work properly: What could be done better? Answer You need a CROSS join of Suppliers and Parts and a LEFT join to SPB. Then you group by supplier and set the condition in the HAVING
SQL consolidate overlapping dates based on criteria
I’m trying to merge overlapping dates between Admit and discharge dates of patients. There are a few edge cases which I couldn’t cover in the query. Input Expected Output Query I used the logic that was here But this doesn’t cover the edge case for ID 2 and 3. Also the subquery is slower whe…
How to parse a Clickhouse-SQL statement using ANTRL4?
Objective : Add an additional WHERE clause to any given Clickhouse statement. I’m using the following Antlr grammars to generate Java classes for a lexer & parser. Lexer grammar https://github.com/ClickHouse/ClickHouse/blob/master/utils/antlr/ClickHouseLexer.g4 Parser grammar https://github.com/Clic…