Since I can’t comment here: How do I delete column from sqlite table in android?
The method I did doesn’t work at all, the column is still Exist. This is my SQL:
db.execSQL(“CREATE TEMP
Author: Simo
How to Max in SQLite (count (x))
I have a SQLite table blog_posts. Each blog post has an id and blog_id.
If I want to know how much each blog has Blog posts:
SELECT blog_id, count(1) posts FROM blog_posts group by blog
iPad – UiView subceclasses become pixelated in the retina
I have a UIView subclass that is loaded into UIViewController when needed. This view works fine in iPhone 3/4/5 or seems to work fine. It is in iPad 1/2 It looks good. But for the iPad retina scree
Table Structure Design with PowerDesigner – Express into SQL scripts, and solve Chinese garbled
For newcomers who are new to PowerDesigner, if you use PowerDesigner to design the structure of the table, if you just simply design the mapping relationship of the data model to view it, then ther
SQLite – Group By timestamp value range
I spent a lot of time reading and still can’t find the best solution. I am designing an Android calorie counter application and I am using SQLite.
I have a table_logs table, in which There are 2 f
Specify which row is returned on SQLite Group
I encountered a tricky problem. I store all versions of all documents in a table. Each document has a unique id, and the version is stored as an integer. It will increment when there is a new versi
Learn mobile phone programming to learn about the SQLite database
SQLite is an embedded database, and its database is a file. Since SQLite itself is written in C and is small in size, it is often integrated into various applications, even in iOS and Android apps
How do we know the lock state of SQLite DB?
1) Is there a pragma or any way to understand the current lock state of sqlite db?
2) In addition, is there a way to know if other processes are using the database? About #1: No, because the an
RSQLite and read data into memory
I may have overlooked something, but when using the RSQLite package, can I still use the special string “:memory:” in the R script to speed up data retrieval? Yes, it can still use the special s
New with Recursive CTE clause with SQLite
SQLite 3.8.3 adds support for CTE. I tried some sample CTEs on this page and they work fine. However, after reading the documentation and trying to adjust some examples, I can’t Create a simple tes