我在以下查询中遇到语法错误:
df_result = df_checkout.join(df_checkin,
(
(df_checkout.product == df_checkin.product)
(df_checkout.host == df_checkin.host)
),
how = 'full_outer').where(df_checkout.rank =
F.when(((df_checkout.rank = df_checkin.rank) and (F.unix_timestamp(df_checkout.checkout_date, 'MM/dd/YYYY HH:MI:SS') <= F.unix_timestamp(df_checkin.checkin_date, 'MM/dd/YYYY HH:MI:SS'))), (df_checkin.rank - 1)).when(((df_checkout.rank = df_checkin.rank) and (F.unix_timestamp(df_checkout.checkout_date, 'MM/dd/YYYY HH:MI:SS') >= F.unix_timestamp(df_checkin.checkin_date, 'MM/dd/YYYY HH:MI:SS'))), df_checkin.rank).otherwise(None)
)
我遇到什么错误?
答案 0 :(得分:0)
您有一个=
而不是==
:
(df_checkout.rank = df_checkin.rank)
应该是
(df_checkout.rank == df_checkin.rank)