Question

我想用where子句检索数据库中保存的已计数行数，在SQlite中，我是初学者并且很难执行此sql查询

Select Count(*) From " + Table_Seekers + " where " + Uid + " = " + Table_Seekers

我想获得数据库中计数的行数，其中传入的Uid在db中是相同的？所以请任何人帮忙。

public void getReqMade(String Uid) {
    SQLiteDatabase database = getReadableDatabase();
    database.execSQL("Select Count(*) From " + Table_Seekers + " where " + Uid + " = " + Table_Seekers);
}

Answer 1

如果Table_Seekers是表格的名称，而Uid就是您要搜索的内容，那么

Select Count(*) From Table_Seekers where Table_Seekers_field = Uid

此外，您应该以小写字母命名方法的参数。

如何在sqlite中执行count查询并获取int作为行数

1 个答案: