Fix insertion of empty map into JSON column by using _dummy subcolumn #1116
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Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>
Signed-off-by: Leonardo Di Donato <leodidonato@gmail.com>
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Nice! Thanks @leodido |
jkaflik
approved these changes
Oct 11, 2023
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Summary
Fixes #1113 (in the issue the code to reproduce it)
This PR correctly handles the inputting of an empty map,
by creating an empty tuple to ensure the subcolumns protocol is happy.
The
_dummykey is a ClickHouse internal name for an empty tuple subcolumn. In fact, it is the same key it gets used when inputting{}.With this PR,
inputting
map[string]any{}from Go has the same effect asINSERT INTO single_json_type_table VALUES ('{}');.In @jkaflik's PR #1115 there are other evaluated fixes/solutions.
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