sqlite

问题 I"m writing a c# application using SQLite and I need the the SQLite Reference. Using NuGet I locate the package and the output window shows a successful install. Looking at the packages config file in the solution explorer it shows the version installed. <?xml version="1.0" encoding="utf-8"?> <packages> <package id="SQLite" version="3.13.0" targetFramework="net472" /> </packages> However under the project References in the Solution explorer SQLite is not there. I have watched tutorials online

问题 I am using React Native and am querying a SQLite database. I wish to perform a like query, specifying the search term as a parameter. The below works fine with the ? notation. SELECT * from People WHERE Name = ? This does not work or any similar variation I've tried: SELECT * from People WHERE Name LIKE '%?%' Anyone know how to do this properly please? Please no interpolations or suggestions open to SQL injection. 回答1: You can do string concatenation in SQLite: SELECT * from People WHERE Name

问题 We have an assignment where we have to write and query from a database file directly without the use of any sqlite api functions. We were given the site https://www.sqlite.org/fileformat.html as guidance but I can't seem to get the database file to look like anything readable. Here's a basic example of what I'm trying to do with the sqlite3 library from python import sqlite3 con = sqlite3.connect("test.db") cur = con.cursor() cur.execute("PRAGMA page_size = 4096") cur.execute("PRAGMA encoding

问题 I want to make query like this one: SELECT lyrics FROM cache WHERE author=%s0, title=%s1 LIMIT 1; where strings %s0 and %s1 should be substituted. Assuming strings are not sanitized, UTF-8 encoded (As database itself), simple null-terminated char* arrays. What are my options to do this? Are there any built-in functions in SQLite (C API) for this? 回答1: Like mentioned in comments already prepared statements should be used. Why Prepared Statements Should Be Favoured When you create SQL queries

问题 I have a WinForms project that is using System.Data.SQLite.Core with VS 2019 ver 16.7.2 with Net,Framework 4.8.03761 On a Windows 7 64 bit computer I will post a screen shot of my NuGet configuration I have used both PackageReference and Packages.config Here is the error after trying to run the installed project The EXE and MSI are created no error ************** Exception Text ************** System.IO.FileNotFoundException: Could not load file or assembly 'System.Data.SQLite, Version=1.0.113

问题 The context here is a SQLCipher database in an Android app. The context here is a SQLCipher database in an Android app. The context here is a SQLCipher database in an Android app. Consider the following SQLite table CREATE TABLE IF NOT EXISTS test(a INTEGER NOT NULL,b INTEGER NOT NULL,c INTEGER NOT NULL,d INTEGER NOT NULL); into which I insert the following rows INSERT INTO test (a,b,c,d) VALUES(1,2,3,4); INSERT INTO test (a,b,c,d) VALUES(1,2,3,5); INSERT INTO test (a,b,c,d) VALUES(1,2,5,5);

问题 I've created a .NET Standard 2.0 class library project that works fine when referenced by a WPF App (.NET Framework 4.8) project. But when the same library is referenced by a MS Office VSTO Project (also using .NET Framework 4.8), I get the following error on the code line shown below: Remarks : I'm using VS2019 , Windows20 Pro , Microsoft.Data.Sqlite and following example from same link. Exact same code works fine on WPF app. I also tried installing SQLitePCLRaw.core package (as mentioned in

问题 I am trying to get a JavaFX application, which uses SQLite, running on Android via Gluons client-maven-plugin but for the library with the native part of SQLite I only get an UnsatisfiedLinkError. The app as such runs fine on Android and even works perfectly with SQLite on any desktop platform, so I think my general setup is ok. In this context I wonder whether linking with shared libraries contained in a JAR file is supported at all for Android? which architecture is the right one for

问题 I am trying to get data from columns containing a particular string in their name. I have found the answer for MySql MySQL: Select Column names containing a string but I need to do the same query for SQLite. Any suggest? 回答1: Since SQLite 3.16, you can use PRAGMAs in queries: SELECT name FROM pragma_table_info('MyTable') WHERE name LIKE ... 来源： https://stackoverflow.com/questions/50043164/sqlite-select-data-where-the-column-name-contains-a-string

问题 all: I'm a Python user,not familiar with SQLite. I try to write a dataframe with 3892 columns into SQLite table using the dataframe.to_sql() method. And Python told me there is an OperationalError: After google, I found that the Python embedded SQLite has a default Maximum Number Of Columns of 2000 in one table.(Limits In SQLite) The page said: The default setting for SQLITE_MAX_COLUMN is 2000. You can change it at compile time to values as large as 32767. My question is that: my SQLite