使用 FMDB 基于日期的查询过滤？

Question

How do I query games that are after a "visible" date? The dateformat is set:

FMDatabase *db = self.database;
if([self.database open]){
    [db beginTransaction];

    NSDateFormatter *formatter = [NSDateFormatter new];
    [formatter setDateFormat:@"yyyy-dd-MM'T'HH:mm:ss'Z'"];
    [db setDateFormat:formatter];
    ...
}

The table is created the following way:

[db executeUpdate:@"CREATE TABLE IF NOT EXISTS game (gameId Varchar(36) NOT NULL PRIMARY KEY,name TEXT,visibleFrom TEXT)"];

The query is executed the following way:

FMResultSet *results = [db executeQuery:@"SELECT * FROM game WHERE game.visibleFrom >= ?,[NSDate date]];

This returns nothing. When I use select * from game then i get all the games. But I need the filtered result. Thanks in advance.

Answer 1

查看查询日期的 SQLite 语法： sqlite select with condition on date您可能需要类似 '@" ... where date > date(?)", formattedDate', where formattedDate is formatted like '1980-12- 31'