小编Arm*_*min的帖子

换句话说,"闭包的序列化框架及其(IL-code)依赖集".

我正在使用System.Data.SQLite,我正在尝试检索由下面的查询表达式生成的SQL字符串.查询正确执行,但SQL字符串是SELECT NULL AS [EMPTY].

似乎GetCommand().CommandText不支持,但如果是这样,还有什么可以访问生成的SQL字符串？

[<Test>]
member this.showSQL() =
    let connectionString = sprintf @"Data Source=%s;UTF8Encoding=True;Version=3" dbFilename
    let connection = new SQLiteConnection(connectionString)
    use dc = new DataContext(connection)

    let channelMap = dc.GetTable<ChannelData>()

    let map = query {
        for row in channelMap do
        where (row.ChannelId = 1)
        select (row.ChannelId, row.Data0, row.State) }

    let cmd = dc.GetCommand(map).CommandText;
    printf "SQL: %s" cmd