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Support configurable delimiter for seed files, default to comma (#3990) #7186

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Merged
QMalcolm merged 18 commits into from
Aug 1, 2023
Merged

Support configurable delimiter for seed files, default to comma (#3990) #7186

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596856b
Support configurable delimiter for seed files, default to comma (#3990)
ramonvermeulen Mar 17, 2023
c6b5b12
Update Features-20230317-144957.yaml
ramonvermeulen Mar 17, 2023
381c3b3
Moved "delimiter" to seed config instead of node config
ramonvermeulen Mar 27, 2023
f44244c
Update core/dbt/clients/agate_helper.py
ramonvermeulen Mar 29, 2023
ca4ff79
Merge commit '050161c78f6d9acc36d0b76bd54ffcd778b7a467'
ramonvermeulen Mar 29, 2023
0322113
Update test_contracts_graph_parsed.py
ramonvermeulen Mar 29, 2023
c2ba7d1
Merge branch 'dbt-labs:main' into configurableDelimiterSeeds
ramonvermeulen May 26, 2023
b258f79
Merge commit '533988233ecc1b2391d2d6139e1d6be095e2d6cd'
ramonvermeulen Jun 23, 2023
20be12b
fixed integration tests
ramonvermeulen Jun 23, 2023
f810942
Added functional tests for seed files with a unique delimiter
ramonvermeulen Jun 23, 2023
10d76f4
Added docstrings
ramonvermeulen Jun 23, 2023
f37e74a
Added a test for an empty string configured delimiter value
ramonvermeulen Jun 23, 2023
d1c8261
whitespace
ramonvermeulen Jun 23, 2023
82f15c4
Merge pull request #1 from dbt-labs/main
ramonvermeulen Jul 14, 2023
2902368
ran black
ramonvermeulen Jul 14, 2023
ff66966
updated changie entry
ramonvermeulen Jul 14, 2023
3083a6d
Update Features-20230317-144957.yaml
ramonvermeulen Jul 14, 2023
847eb2d
Merge branch 'dbt-labs:main' into configurableDelimiterSeeds
ramonvermeulen Aug 1, 2023
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6 changes: 6 additions & 0 deletions .changes/unreleased/Features-20230317-144957.yaml
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@@ -0,0 +1,6 @@
kind: Features
body: Added support to configure a delimiter for a seed file, defaults to comma
time: 2023-03-17T14:49:57.564210866+01:00
custom:
Author: ramonvermeulen
Issue: "3990"
4 changes: 2 additions & 2 deletions core/dbt/clients/agate_helper.py
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Expand Up @@ -135,12 +135,12 @@ def as_matrix(table):
return [r.values() for r in table.rows.values()]


def from_csv(abspath, text_columns):
def from_csv(abspath, text_columns, delimiter = ","):
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@jtcohen6 jtcohen6 Mar 22, 2023

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Question: Should we add support for more than just delimiter here? Any/all **kwargs supported by agate.from_csv / Python's stdlib CSV reader?

Thoughts:

  • That can be out of scope for now / for this PR
  • It would risk locking us further into using agate (which I don't love), or at least the Python stdlib csv reader (which I don't mind as much)

type_tester = build_type_tester(text_columns=text_columns)
with open(abspath, encoding="utf-8") as fp:
if fp.read(1) != BOM:
fp.seek(0)
return agate.Table.from_csv(fp, column_types=type_tester)
return agate.Table.from_csv(fp, column_types=type_tester, delimiter=delimiter)


class _NullMarker:
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3 changes: 2 additions & 1 deletion core/dbt/context/providers.py
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Expand Up @@ -791,8 +791,9 @@ def load_agate_table(self) -> agate.Table:
assert self.model.root_path
path = os.path.join(self.model.root_path, self.model.original_file_path)
column_types = self.model.config.column_types
delimiter = self.model.config.delimiter
try:
table = agate_helper.from_csv(path, text_columns=column_types)
table = agate_helper.from_csv(path, text_columns=column_types, delimiter=delimiter)
except ValueError as e:
raise LoadAgateTableValueError(e, node=self.model)
table.original_abspath = os.path.abspath(path)
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1 change: 1 addition & 0 deletions core/dbt/contracts/graph/model_config.py
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Expand Up @@ -499,6 +499,7 @@ def field_mapping(cls):
@dataclass
class SeedConfig(NodeConfig):
materialized: str = "seed"
delimiter: str = ","
quote_columns: Optional[bool] = None

@classmethod
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3 changes: 3 additions & 0 deletions test/unit/test_contracts_graph_parsed.py
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Expand Up @@ -452,6 +452,7 @@ def basic_parsed_seed_dict():
'alias': 'foo',
'config': {
'column_types': {},
'delimiter': ',',
'enabled': True,
'materialized': 'seed',
'persist_docs': {},
Expand Down Expand Up @@ -542,6 +543,7 @@ def complex_parsed_seed_dict():
'alias': 'foo',
'config': {
'column_types': {},
'delimiter': ',',
'enabled': True,
'materialized': 'seed',
'persist_docs': {'relation': True, 'columns': True},
Expand Down Expand Up @@ -588,6 +590,7 @@ def complex_parsed_seed_object():
alias='foo',
config=SeedConfig(
quote_columns=True,
delimiter=',',
persist_docs={'relation': True, 'columns': True},
),
deferred=False,
Expand Down