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Tag: SQLITE

In SQLITE3, how do I make SQL escape in the Like clause?

I want to run LIKE queries in sqlite3 and safely escape user input. Basically, I want to do something like this:

< /p> char* query = “SELECT * FROM table WHERE LOWER(notes) LIKE’%?%'”;
sqlite

September 22, 2021By Simo Sqlite China, clause, escape, How, middle, SQL, SQLITE, SQLITE3, workingLeave a Comment

Encryption SQLite

I will write my own encryption, but want to discuss some internals. It should be used on several mobile platforms – iOS, Android, WP7, desktop services more or less as test platforms. < p>

Le

September 22, 2021By Simo Sqlite encryption, SQLITELeave a Comment

Create a general query in SQLite-Net C # using SQLiteAsyncConnection

I am using SQLite-net (https://github.com/praeclarum/sqlite-net) to implement a database using Mono on Android and have the following functions:

public class DatabaseTestASync
{
private SQLi

September 22, 2021By Simo Sqlite C #, creating, query, SQLITE, SQLiteAsyncConnection, universal, UsingLeave a Comment

Package SQLITE DB with my app

I created a SQLite database on my computer. I have imported it into the assets folder in the project directory. How can I access it from my Android application? Use Java I/O to copy it to the da

September 22, 2021By Simo Sqlite application, DB, my, Packaging, program, SQLITELeave a Comment

SQLite database

Basic usage of SQLite

As a lightweight database, I personally feel that it is not easy to operate, and each has its advantages and disadvantages.

The use of sqlite3 is to switch to the

September 22, 2021By Simo Sqlite database, SQLITELeave a Comment

Select a specific index line in SQLite

I have an index, and I need to find the row in the table with that index in SQLite.
Example:

Index= 1

Table:

ID-Name
aa1 John
aa2 Mark <-- I need this row aa3 Lucy aa4 Jim Which

September 22, 2021By Simo Sqlite index, line, Moist, one, specific, SQLITELeave a Comment

How do I use the SQLITE backend to provide user-defined functions for Python Blaze?

I use the sqlite database connected to Blaze
df = bz.Data(“sqlite: ///< my database>)
Everything is normal, but I don’t know How to provide a user-defined function in the interaction with df.
I h

September 22, 2021By Simo Sqlite backend, Blaze, function, how to use, Provision, python, SQLITE, User DefinitionLeave a Comment

SQLITE is more fast by python

I’m just curious, if someone can tell me whether using SQLite to store dictionaries (such as brute force) for Python scripts is an effective method. Although I’m relatively new to Python, I I have

September 22, 2021By Simo Sqlite how fast, pass, python, SQLITELeave a Comment

How to name an output column in the SQLite VALUES clause?

If I run this query in sqlite3(3.17.0)

select T.* from (values ​​(1 ),(2),(3),(4),(5)) as T; I get the following output, where there is no name of the first column of T.

———-
1
2

September 22, 2021By Simo Sqlite clause, Column, How, middle, Name, Output, SQLITE, valuesLeave a Comment

SQLite achieve time accumulation

Form:data

Time Amount

2015-01-01 10000 2015-01-02 20000

2015-01-03 30000

select a.时间,sum(b .Amount) as Cumulative amount

from data a,data b

group by a. time

September 22, 2021By Simo Sqlite accumulation, Implementation, SQLITE, timeLeave a Comment

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