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Function null

lib/sqlalchemy/sql/_elements_constructors.py:1316–1319  ·  view source on GitHub ↗

Return a constant :class:`.Null` construct.

()

Source from the content-addressed store, hash-verified

1314
1315
1316def null() -> Null:
1317 """Return a constant :class:`.Null` construct."""
1318
1319 return Null._instance()
1320
1321
1322def nulls_first(column: _ColumnExpressionArgument[_T]) -> UnaryExpression[_T]:

Callers 15

test_null_true_false_is_sanity_checksMethod · 0.90
test_fourteenMethod · 0.90
test_constants_are_singletonMethod · 0.90
test_constant_render_distinctMethod · 0.90
test_constant_render_distinct_use_labelsMethod · 0.90
test_is_eq_precedence_flatMethod · 0.90
AnyAllTestClass · 0.90
test_deduping_unique_across_selectsMethod · 0.90
test_castMethod · 0.90
test_val_and_nullMethod · 0.90
test_detect_change_in_binds_no_trackingMethod · 0.90
test_union_correspondenceMethod · 0.90

Calls 1

_instanceMethod · 0.45

Tested by 15

test_null_true_false_is_sanity_checksMethod · 0.72
test_fourteenMethod · 0.72
test_constants_are_singletonMethod · 0.72
test_constant_render_distinctMethod · 0.72
test_constant_render_distinct_use_labelsMethod · 0.72
test_is_eq_precedence_flatMethod · 0.72
test_deduping_unique_across_selectsMethod · 0.72
test_castMethod · 0.72
test_val_and_nullMethod · 0.72
test_detect_change_in_binds_no_trackingMethod · 0.72
test_union_correspondenceMethod · 0.72
test_alias_unionMethod · 0.72