Question

我试图像这样创建SQLite数据库：

private static final String UID = "_id";
private static final String NAME = "Name";
private static final String TYPE = "Type";
private static final String UNITS = "Units";
private static final String CURRENCY = "Currency";
private static final String PRICE = "Price";
private static final String ADD = "Default";
private static final String WEATHER = "Depends";
private static final String CREATE_TABLE = 
     " CREATE TABLE "+TABLE_NAME+
     " ( "  +UID+" INTEGER PRIMARY KEY AUTOINCREMENT, "+
     NAME+     " VARCHAR (255), "+
     TYPE+     " VARCHAR (255), "+
     UNITS+    " VARCHAR (255), "+
     CURRENCY+ " VARCHAR (255), "+
     PRICE+    " VARCHAR (255), "+
     ADD+      " VARCHAR (255), "+
     WEATHER+  " VARCHAR (255)  ); ";

public void onCreate(SQLiteDatabase db) {
        db.execSQL(CREATE_TABLE);
}

获取此错误日志：

Caused by: android.database.sqlite.SQLiteException: near "Default": 
syntax error (code 1): , while compiling: CREATE TABLE Meters ( _id INTEGER 
PRIMARY KEY AUTOINCREMENT, Name VARCHAR (255), Type VARCHAR (255), Units 
VARCHAR (255), Currency VARCHAR (255), Price VARCHAR (255), Default VARCHAR 
(255), Depends VARCHAR (255)  );

我真的没有看到问题： - /欢迎任何可能出错的建议，谢谢你们

Answer 1

DEFAULT是SQL中的关键字。将变量ADD中的列名更改为其他内容。

Answer 2

将ADD的值更改为Default，因为这是SQL中的保留字

Answer 3

Default是SQLite的关键字。你可能不应该把它当作名字。如果要使用关键字作为名称，则需要引用它。

以下是您可能要检查的一些SQLite文档：https://www.sqlite.org/lang_keywords.html

SQLite CREATE TABLE语法错误（代码1）

3 个答案: