Created
October 13, 2019 07:35
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Code snippet for demonstrating Delta Lake
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%python | |
# Create a temparory dataset | |
data = spark.range(0, 50) | |
data.write.format("delta").save("/tmp/myfirst-delta-table") | |
# Read the data | |
df = spark.read.format("delta").load("/tmp/myfirst-delta-table") | |
df.show() | |
# Updating the dataset | |
data = spark.range(51, 100) | |
data.write.format("delta").mode("overwrite").save("/tmp/myfirst-delta-table") | |
# Read the data | |
df = spark.read.format("delta").load("/tmp/myfirst-delta-table") | |
df.show() | |
# Read the older version of data | |
df = spark.read.format("delta").option("versionAsOf", 0).load("/tmp/myfirst-delta-table") | |
df.show() |
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