小编Fee*_*Jai的帖子

可以说我有三个不同的MySQL表:

表products:

id | name
 1   Product A
 2   Product B

表partners:

id | name
 1   Partner A
 2   Partner B

表sales:

partners_id | products_id
          1             2
          2             5
          1             5
          1             3
          1             4
          1             5
          2             2
          2             4
          2             3
          1             1

我想得到一个表格,其中包含行和产品中的合作伙伴作为列.到目前为止,我能够得到这样的输出:

name      | name      | COUNT( * )
Partner A   Product A          1
Partner A   Product B          1
Partner A   Product C          1
Partner A   Product D          1
Partner …

我刚刚从Kickstarter获得了我的HackRF.适用于Windows上的SDR#,因此产品还可以.要真正使用它,我试着让GNURadio在我的Mac上运行,遵循以下官方教程:https://github.com/robotastic/homebrew-hackrf

但是,在编译失败后运行gnuradio:

Bella:~ feejai$ gnuradio-companion

/usr/local/bin/gnuradio-companion:70: GtkWarning: Das Symbol »gnuradio-grc« konnte
nicht gefunden werden, ebenso wenig wie das Thema »hicolor«. Möglicherweise müssen Sie
es installieren.
Sie können sich eine Kopie herunterladen unter:
    http://icon-theme.freedesktop.org/releases
  try: gtk.window_set_default_icon(gtk.IconTheme().load_icon('gnuradio-grc', 256, 0))
Warning: Block with key "analog_agc2_xx" already exists.
    Ignoring: /usr/local/Cellar/gnuradio/3.6.5.1/share/gnuradio/grc/blocks/analog_agc2_xx.xml
Warning: Block with key "analog_agc_xx" already exists.
    Ignoring: /usr/local/Cellar/gnuradio/3.6.5.1/share/gnuradio/grc/blocks/analog_agc_xx.xml
Warning: Block with key "analog_cpfsk_bc" already exists.
    Ignoring: /usr/local/Cellar/gnuradio/3.6.5.1/share/gnuradio/grc/blocks/analog_cpfsk_bc.xml
Warning: Block with key "analog_ctcss_squelch_ff" already exists.
    Ignoring: /usr/local/Cellar/gnuradio/3.6.5.1/share/gnuradio/grc/blocks/analog_ctcss_squelch_ff.xml
Warning: Block with key …