I have a join on two tables defined as a left outer join so that all records are returned from the left hand table even if they don’t have a record in the right hand table. However I also need to include a where clause on a field from the right-hand table, but…. I still want a row from the
How to search for a substring in SQLite?
Whats the most efficient way to search for a sub string in SQLite? I’m looking at the LIKE operator. Do I have the right idea? Has this worked well for you? http://www.sqlite.org/lang_expr.html …
How come queries aren’t being added to Django’s db.connection.queries in tests?
I’m trying to capture the queries which my code submits to the database by examining the contents of django.db.connection.queries. For some reason though, after all the automatically produced setup queries are logged, no further queries are logged from my own code. The following test case demonstrates t…
Should every SQL Server foreign key have a matching index? [closed]
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 7 months ago. The community reviewed whether to reopen this question 7 months ago and left it closed: Or…
Converting a “DBML” file to a “SQL database file”
I have the DBML file of a database and would like to generate an SQL database file from this file. Thanks
SQL vs noSQL build examples
Could I have a list of type of applications I should build on a sql database and a list of applications i should build on a nosql database?
How to get the difference between two dates rounded to hours
I’ll illustrate what I would like to get in the following example: Using TIMEDIFF(), we get 2 as a result. This means, it’s not considering the 50 minutes left. In this case, what I’d like to get is: 50 (minutes) / 60 = 0.83 period. Therefore, the result should be 2.83 and not 2. Answer
Query to group by maximum depth of PostgreSQL Ltree?
I want to query for all products with the name “Shania Twain”, but I want group them only by the tree with the deepest nlevel. Assuming I have a table like the following with the name categories So, for example, The problem lies with the HAVING clause requiring a boolean expression. The clause MAX…
How to save image in database using C# [closed]
I want to save user image into a database in C#. How do I do that?
What’s the R equivalent of SQL’s LIKE ‘description%’ statement?
Not sure how else to ask this but, I want to search for a term within several string elements. Here’s what my code looks like (but wrong): des is a vector that stores strings such as “Swinging Strike”, “In play (run(s))”, “In play (out(s) recorded)” and etc. What I wa…