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newsgroups = newsgroups.drop('tf_features') # dropping non-existed column doesn't cause an error
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posted @ 2025-11-26 15:15
ZhangZhihuiAAA
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from pyspark.sql.functions import expr df_filtered = df_filtered.withColumn('filtered_array', expr('filter(filtered_doc, x -> len(x) >= 4)')) Please h
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posted @ 2025-11-26 11:03
ZhangZhihuiAAA
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In PostgreSQL, you can convert a timestamp to a date (i.e., drop hours/minutes/seconds) in several common ways: ✅ 1. Cast to date Fastest and simplest
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posted @ 2025-11-26 08:29
ZhangZhihuiAAA
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