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Tag: sqlite

Set character set in sqlite [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 1 year ago. Improve this question how to do character set in sqlite query.enter image description here Answer You have to use the datatype TEXT. You can see the datatypes in

SQLite – Rolling Average/Sum

I have a dataset as shown below, wondering how I can do a rolling average with its current record followed by next two records. Example: lets consider the first record whose total is 3 followed by 4 and 7 ,Now the rolling 3 day average for first record would be 4.6 and so on. Expected output: PS: Having “null” value

Complex SQL query by pattern with timestamps

I have the following info in my SQLite database: I want to perform a query that returns the elements that compose an episode. An episode is a set of ordered registers that comply the following requirements: The first element is greater than zero. The previous element of the first one is zero. The last element is greater than zero. The

How to make generic SQL heredocs?

I’m making a mock ORM in Ruby, storing ‘forum’ data. I have the following tables: users (id, fname, lname), and questions (id, title, body, author_id). a_user.create and a_question.create are more or less the same: I’m writing another class, ModelBase, and I’d like to be able to say something like or . Users and Questions do not have an id until

SQL – How to return a list of data

I have this SQL method below, it is suppose to return multiple rows of data, but it is only returning one item every time I try to display the data. How do I fix that? Answer Inside the while loop in each iteration you change the value of LikeSong, so when the loop ends, LikeSong has the last value assigned

PB / SQLite3 JOIN COMPARE TABLES

I have Two tables : T1 T2 In SQLITE3 I search for n1T2 and n2T2 names, the count of same values between i1T1 and i1T2 I var_dump for display, in wait best method Answer It looks like you want a join and aggregation:

How to check if one of several fields is in the set?

I am generating the SQL queries from the C++ code. (sqllite3) I need to write efficiently the following request. How to optimize it: avoid pasting two times (V1, V2, V3, …), or take sets intersection of (T.field1, T.field2) and (V1, V2, V3, …), or create statement local variable (V1, V2, V3, …), or whatever? The SQL statement is created as

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