我在sqlite android中遇到了关于LIKE语句的问题。 我用了一个小时来弄清楚,但我无法得到错误部分。有谁知道我的错误在哪里?
public Cursor getSearch(String id) {
String[] args = { id };
return (database.rawQuery("SELECT " + SQLiteHelper.product_id
+ " as _id,"
+ SQLiteHelper.productName + " ," +SQLiteHelper.productDesp
+ "," + SQLiteHelper.productQtty + ","
+SQLiteHelper.product_CategoryF+" FROM "
+ SQLiteHelper.productTable+" WHERE "
+ SQLiteHelper.productName +" LIKE 'id%'",null));
}
错误信息
bind or column index out of range: handle 0x5e3ec0
有谁知道我的错误在哪里?
溶液
return (database.rawQuery("SELECT " + SQLiteHelper.product_id
+ " as _id,"
+ SQLiteHelper.productName + " ," +SQLiteHelper.productDesp
+ "," + SQLiteHelper.productQtty + ","
+SQLiteHelper.product_CategoryF+" FROM "
+ SQLiteHelper.productTable+" WHERE "
+ SQLiteHelper.productName +" LIKE '"+id+"%'",null));
你不需要像这样形成你的 SQL。 rawQuery
使绑定参数变得非常容易。
rawQuery("SELECT ? as _id, ?, ?, ?, ? FROM ? WHERE ? LIKE 'id%'", new String[] {SQLiteHelper.product_id, SQLiteHelper.productName, SQLiteHelper.productDesp, SQLiteHelper.productQtty, SQLiteHelper.product_CategoryF, SQLiteHelper.productTable, SQLiteHelper.productName});
就您的代码而言,请注意 CategoryF 行上的,"+
应+",
return (database.rawQuery("SELECT " + SQLiteHelper.product_id
+ " as _id,"
+ SQLiteHelper.productName + " ," +SQLiteHelper.productDesp
+ "," + SQLiteHelper.productQtty + ","
,"+SQLiteHelper.product_CategoryF+" FROM "
+ SQLiteHelper.productTable+" WHERE "
+ SQLiteHelper.productName +" LIKE 'id%'",null));