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Compare JSON, ARRAY, STRUCT types in BigQuery (simplistically) #533
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…port Add support for column types: PostgreSQL JSON/JSONB and RedShift Super
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An attempt to make BigQuery's
ARRAY&STRUCTcolumn types suitable for comparison.As of now, they are not supported at all, and data-diff does not even understand this type of columns. So the addition will only affect BigQuery and no other databases.
The comparison is rather simplistic — convert to JSON (lists & dicts correspondingly) and try to hash & compare those instead of the real arrays & structs.
This might be affected by different serialization results, such as different key ordering, different spacing & indenting in json, so on. This problem is to be solved separately in datafold/sqeleton#15.
Addresses: #445