Question

有人可以告诉我这是否正确吗？

public static final String DATABASE_CREATE = ("CREATE TABLE" + TABLE_NAME + "(" +
                                            COLUMN_ID + "INTEGER PRIMARY KEY AUTOINCREMENT,"+ 
                                            COLUMN_TITLE + "text not null," + 
                                            COLUMN_CATEGORY + "text not null," + 
                                            COLUMN_IMAGE + "text not null);");

错误是SQLiteException

Answer 1

您在列和表名之间缺少空格。这是更正的查询：

"CREATE TABLE " + TABLE_NAME + "(" +
 COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"+ 
 COLUMN_TITLE + " text not null," + 
 COLUMN_CATEGORY + " text not null," + 
 COLUMN_IMAGE + " text not null);");

另外，在查询结束时要注意分号。这是非常有问题的 - 我的意思是在某些设备上这个符号可能会导致错误（更安全的是不使用它）。

希望我帮助你解决问题。

Answer 2

COLUMN_TITLE + "text not null" this is your mistake,

在列的数据类型中添加一个空格，如下所示

public static final String DATABASE_CREATE = ("CREATE TABLE" + TABLE_NAME + "(" +
                                            COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"+ 
                                            COLUMN_TITLE + " text not null," + 
                                            COLUMN_CATEGORY + " text not null," + 
                                            COLUMN_IMAGE + " text not null);");

您的列名与其数据类型之间缺少空格。

SQLite异常查询错误

2 个答案: