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Patch to handle JSON that's not inside an array. #37

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Patch to handle JSON that's not inside an array. #37

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16 changes: 8 additions & 8 deletions target_bigquery/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -862,18 +862,18 @@ def _wrap_json_array(
field, path="$", depth=depth, base=f"{field.name}__rows"
)
v = _v.as_sql().rstrip(", \n")

return (" " * depth * 2) + indent(


# This is a patch to get around the fact that JSON_QUERY_ARRAY doesn't work with
# fields that contain a single JSON blob instead of a an array of JSON blobs.
dedent(
f"""
ARRAY(
SELECT {v}
FROM UNNEST(
JSON_QUERY_ARRAY({base}, '{path}.{field.name}')
) AS {field.name}__rows
WHERE {_v.projection} IS NOT NULL
"""
JSON_QUERY({base}, '{path}.{field.name}')
"""
+ (" " * depth * 2)
+ f") AS {field.name},\n"
+ f" AS {field.name},\n"
).lstrip(),
" " * depth * 2,
)
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