I need to use SQLite database file as a file for storing information, and I want to store the version of the file in the SQLite database file.
我需要使用SQLite数据库文件作为存储信息的文件，我想将该文件的版本存储在SQLite数据库文件中。
How can I do this? I mean, how to store unique (only one) data in SQLite? I don't want to use store the info by making table for this, as the version info is just one number.
我怎样才能做到这一点？我的意思是，如何在SQLite中存储唯一（仅一个）数据？我不想通过为此创建表来存储信息，因为版本信息只是一个数字。
1 个解决方案
#1
12
For SQLite, which is an embedded database, after all, there's nothing wrong with using a single table for holding a unique value like this.
毕竟，对于SQLite来说，这是一个嵌入式数据库，使用单个表来保存这样的唯一值没有任何问题。
sqlite> CREATE TABLE AppVersion (version);
sqlite> INSERT INTO AppVersion VALUES('1.0');
sqlite> SELECT * FROM AppVersion;
1.0
sqlite> UPDATE AppVersion SET version='1.1';
sqlite> SELECT * FROM AppVersion;
1.1
It's an embedded database. You expect good performance when you use it, not perfect performance. A single extra table (holding only a single row ever) shouldn't make any difference to any reasonable application.
这是一个嵌入式数据库。您希望在使用它时获得良好的性能，而不是完美的性能。一个额外的表（只保留一行）不应对任何合理的应用程序产生任何影响。
#1
12
For SQLite, which is an embedded database, after all, there's nothing wrong with using a single table for holding a unique value like this.
毕竟，对于SQLite来说，这是一个嵌入式数据库，使用单个表来保存这样的唯一值没有任何问题。
sqlite> CREATE TABLE AppVersion (version);
sqlite> INSERT INTO AppVersion VALUES('1.0');
sqlite> SELECT * FROM AppVersion;
1.0
sqlite> UPDATE AppVersion SET version='1.1';
sqlite> SELECT * FROM AppVersion;
1.1
It's an embedded database. You expect good performance when you use it, not perfect performance. A single extra table (holding only a single row ever) shouldn't make any difference to any reasonable application.
这是一个嵌入式数据库。您希望在使用它时获得良好的性能，而不是完美的性能。一个额外的表（只保留一行）不应对任何合理的应用程序产生任何影响。