Module relation

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Re-exports§

ColumnIndex: Stable index of a column in a RelationDesc.
ColumnMetadata 🔒: Metadata (other than type) for a column in a RelationDesc.
ColumnName: The name of a column in a RelationDesc.
ColumnType: The type of a Datum.
NotNullViolation: Expression violated not-null constraint on named column
RelationDesc: A description of the shape of a relation.
RelationDescBuilder: A builder for a RelationDesc.
RelationType: The type of a relation.
RelationVersion: The version a given column was added at.
VersionedRelationDesc: A wrapper around RelationDesc that provides an interface for adding columns and generating new versions.

PropRelationDescDiff: Diffs that can be generated proptest and applied to a RelationDesc to exercise schema migrations.
RelationVersionSelector: Describes a RelationDesc at a specific version of a VersionedRelationDesc.

arb_relation_desc: Returns a Strategy that generates an arbitrary RelationDesc with a number columns within the range provided.
arb_relation_desc_diff: Generates a set of PropRelationDescDiffs based on some source RelationDesc.
arb_relation_desc_projection: Returns a Strategy that generates a projection of the provided RelationDesc.
arb_row_for_relation: Returns a Strategy that yields arbitrary Rows for the provided RelationDesc.
return_true 🔒: This method exists solely for the purpose of making ColumnType nullable by default in unit tests. The default value of a bool is false, and the only way to make an object take on any other value by default is to pass it a function that returns the desired default value. See https://github.com/serde-rs/serde/issues/1030