fumingxia 发表于 2016-11-29 09:54:05

SQLite 数据库字段类型

  都知道Android中数据保存之一就是使用了sqlLite,所以经常创建表需要涉及到数据库字段。
  sqlLite中包含5中字段,根据下面的介绍对于想inte,应该会根据值自动设置长度存储。具体待学习
    Each value stored in an SQLite database (or manipulated by the database engine) has one of the following storage classes:

[*]  NULL. The value is a NULL value.
[*]  INTEGER. The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value.
[*]  REAL. The value is a floating point value, stored as an 8-byte IEEE floating point number.
[*]  TEXT. The value is a text string, stored using the database encoding (UTF-8, UTF-16BE or UTF-16LE).
[*]  BLOB. The value is a blob of data, stored exactly as it was input.

  参考:
  http://www.sqlite.org/datatype3.html
  http://kuikui.iyunv.com/blog/423490
  http://developers.androidcn.com/reference/android/database/sqlite/package-summary.html
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