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fix Fixing error where complex column types contain a list or null #403

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fix Fixing error where complex column types contain a list or null #403

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914d48a
fixing error that is thrown when variant column holds a non dict (lis…
Sep 20, 2023
c9b1596
fixing error that is thrown when variant column holds a non dict (lis…
Sep 20, 2023
c716feb
fixing error that is thrown when variant column holds a non dict (lis…
Sep 20, 2023
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15 changes: 9 additions & 6 deletions dbt_coves/tasks/generate/sources.py
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Original file line number Diff line number Diff line change
Expand Up @@ -317,19 +317,22 @@ def get_nested_keys(self, json_cols, relation):
config_db = ""
_, data = self.adapter.execute(
f"SELECT {', '.join(json_cols)} FROM {config_db}{relation.schema}.{relation.name} \
limit 1",
WHERE {' IS NOT NULL AND '.join([' CAST(' + sub + ' AS VARCHAR) ' for sub in json_cols])} \
IS NOT NULL limit 1",
fetch=True,
)
result = dict()
if len(data.rows) > 0:
for idx, json_col in enumerate(json_cols):
value = data.columns[idx]
try:
nested_key_names = list(json.loads(value[0]).keys())
result[json_col] = {}
for key_name in nested_key_names:
result[json_col][key_name] = self.get_default_metadata_item(key_name)
self.add_metadata_to_nested(relation, result, json_col)
nested_object = json.loads(value[0])
if type(nested_object) is dict:
nested_key_names = list(nested_object.keys())
result[json_col] = {}
for key_name in nested_key_names:
result[json_col][key_name] = self.get_default_metadata_item(key_name)
self.add_metadata_to_nested(relation, result, json_col)
except TypeError:
console.print(
f"Column {json_col} in relation {relation.name} contains invalid JSON.\n"
Expand Down