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BigQuery: Raise helpful error when loading table from dataframe with STRUCT columns - #9053
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tswast
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The warning will be added once the support for partial schemas and automatic schema detection is implemented.
tswast
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Aug 21, 2019
HemangChothani pushed a commit
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Aug 29, 2019
…STRUCT columns (googleapis#9053) * Issue warning if no schema when loading from DF * Raise error if serializing DF with struct fields * Rewrite test assertion to make coverage happy * Make the unsupported type message more general * Remove warning on missing schema The warning will be added once the support for partial schemas and automatic schema detection is implemented.
emar-kar pushed a commit
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Sep 18, 2019
…STRUCT columns (googleapis#9053) * Issue warning if no schema when loading from DF * Raise error if serializing DF with struct fields * Rewrite test assertion to make coverage happy * Make the unsupported type message more general * Remove warning on missing schema The warning will be added once the support for partial schemas and automatic schema detection is implemented.
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Closes#9024.
This PR detects if loading table data from a dataframe with STRUCT columns, and raises a helpful error before doing any more work.
It also issues a pending deprecation warning if schema is not provided as discussed separately.
Edit: Now seeing the specs for no-schema deprecation in #9042, this PR can be viewed as a step towards it (the additional logic for when to issue a warning will be added separately). If the warning should be removed altogether in this PR, please let me know.
How to test
Expected result (after the fix):
Instead of an uninformative
FileNotFoundError, aValueErrorwith a clear message is raised.