[SPARK-51152][PYTHON][SQL][DOCS] Add usage examples for the get_json_object function#49875
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fusheng9399 wants to merge 15 commits intoapache:masterfrom
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[SPARK-51152][PYTHON][SQL][DOCS] Add usage examples for the get_json_object function#49875fusheng9399 wants to merge 15 commits intoapache:masterfrom
fusheng9399 wants to merge 15 commits intoapache:masterfrom
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fusheng9399
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Please help review it when you have free time, thanks! @panbingkun |
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Are there any other examples of |
Author
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No, I have added a more comprehensive example. The PySpark example has been updated. |
HyukjinKwon
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panbingkun
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Feb 12, 2025
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/jsonExpressions.scala
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panbingkun
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zhengruifeng
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| >>> data = [("1", '''{"f1": "value1", "f2": "value2"}'''), ("2", '''{"f1": "value12"}''')] | ||
| >>> df = spark.createDataFrame(data, ("key", "jstring")) | ||
| >>> df.select(df.key, get_json_object(df.jstring, '$.f1').alias("c0"), \\ | ||
| ... get_json_object(df.jstring, '$.f2').alias("c1") ).collect() |
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let's use show(), and shows both the input column and output column
zhengruifeng
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panbingkun
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panbingkun
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February 18, 2025 11:19
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Welcome to the Apache Spark community, @fusheng9399 ! |
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Thanks for the review @HyukjinKwon @zhengruifeng. |
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Thanks all @panbingkun @HyukjinKwon @zhengruifeng |
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What changes were proposed in this pull request?
The pr aims to add some usage examples for function
get_json_object, including:get_json_object('[{"a":"b"},{"a":"c"}]', '$[0].a')，get_json_object('[{"a":"b"},{"a":"c"}]', '$[*].a').Why are the changes needed?
When
JSONis anarray, some users may not know how to retrieve its data throughget_json_object.Let's add some usage examples.
Does this PR introduce any user-facing change?
Yes, Spark end-users will learn how to use
get_json_objectto obtain JSON data of type array through examples.How was this patch tested?
Was this patch authored or co-authored using generative AI tooling?
No.