sqlite

问题 I have installed laraadmin as for quick admin with using sqlite. But problem is when i am going to create something getting SQLSTATE[HY000]: General error: 1 near "SHOW": syntax error (SQL: SHOW TABLES) Thanks 回答1: Unfortunately SQLite doesn't know SHOW TABLES , but instead it has: special command line commands, like .schema or .tables (with optional LIKE patterns) a master metadata table, called sqlite_master So let's say you have the following tables: sqlite> CREATE TABLE A(a INT, b, INT, c

问题 My Error: Runtime Error Uncaught (in promise): TypeError: _this.sqlstorage.openDatabase is not a function TypeError: _this.sqlstorage.openDatabase is not a function at http://localhost:8100/build/main.js:67:30 at t.invoke (http://localhost:8100/build/polyfills.js:3:9283) at Object.onInvoke (http://localhost:8100/build/vendor.js:4508:37) at t.invoke (http://localhost:8100/build/polyfills.js:3:9223) at r.run (http://localhost:8100/build/polyfills.js:3:4452) at http://localhost:8100/build

问题 My Error: Runtime Error Uncaught (in promise): TypeError: _this.sqlstorage.openDatabase is not a function TypeError: _this.sqlstorage.openDatabase is not a function at http://localhost:8100/build/main.js:67:30 at t.invoke (http://localhost:8100/build/polyfills.js:3:9283) at Object.onInvoke (http://localhost:8100/build/vendor.js:4508:37) at t.invoke (http://localhost:8100/build/polyfills.js:3:9223) at r.run (http://localhost:8100/build/polyfills.js:3:4452) at http://localhost:8100/build

问题 My Error: Runtime Error Uncaught (in promise): TypeError: _this.sqlstorage.openDatabase is not a function TypeError: _this.sqlstorage.openDatabase is not a function at http://localhost:8100/build/main.js:67:30 at t.invoke (http://localhost:8100/build/polyfills.js:3:9283) at Object.onInvoke (http://localhost:8100/build/vendor.js:4508:37) at t.invoke (http://localhost:8100/build/polyfills.js:3:9223) at r.run (http://localhost:8100/build/polyfills.js:3:4452) at http://localhost:8100/build

问题 I want to create a directory structure table as described in this question where: Directory = "Primary Key" id field, typically an integer Directory_Parent = "Foreign Key" id field, which points to the id of another Directory in the same table Value = string containing the directory/folder name Given Tree/Fruit/Apples/ Directory | Directory_Parent | Value 0 null Root 1 0 Tree 2 1 Fruit 3 2 Apples A Root folder has been created at Primary Key 0 with a null parent. My paths are being imported

问题 In Swift4 for iOS11 I would like to attach two SQLite database-files (file1.db and file2.db) in order to make a query over all data (i.e. over both databases). I have successfully implemented a SQL-query in one SQLite database using the following code (..here with an example of a name-query...): func readOneDB() -> String? { // create SQL-DB FilePath do { // create a documents-URL from filename self.file_1_URL = try createSQLFilePath(fileName: "file1", fileExtension: "db") } catch { return

问题 I have deployed an app in Heroku using Django. The Django program uses a SQLite database db.sqlite3 on root directory to populate its page. Separately, there is also a Node.js scraper program that inserts to that database. The problem is that the hard-refreshed webpage shows the same data even after the content of the database changed. Curiously, this does not happen when it is tested locally with python manage.py runserver . How can I fix this problem? Thank you in advance! For reference,

问题 This is a simple EFCore database in a .NETCore 3.1 app that has 3 migrations "init" Initial migration "gcalg500" Added seeding data and tables "valtt" Added more seeding data and tables The most recent one is still checked out in working code. But after I made it and ran a few times, I realized I wanted to undo it, make more changes and apply it again. so I tried remove-migration from the package manager console. The error returned was The migration '20200507181032_valtt' has already been

问题 This is a simple EFCore database in a .NETCore 3.1 app that has 3 migrations "init" Initial migration "gcalg500" Added seeding data and tables "valtt" Added more seeding data and tables The most recent one is still checked out in working code. But after I made it and ran a few times, I realized I wanted to undo it, make more changes and apply it again. so I tried remove-migration from the package manager console. The error returned was The migration '20200507181032_valtt' has already been

问题 I got a VPS and I wanted to host my flask app there. I followed DigitalOcean's tutorial on "How To Serve Flask Applications with Gunicorn and Nginx on Ubuntu 18.04" (I didnt get the VPS from DO) and everything worked fine with the example app... when I tried to replace the files with my app's files and host the app again I get a 500 error. The 500 error doesnt appear everywhere. It comes up where my .db file is envoled like where I have posts or users etc.. Everything else loads up fine. The