Struct SchemaBuilder 

pub struct SchemaBuilder { /* private fields */ }

Builder for incrementally constructing a CombinedSchema

Builds schemas in O(n) time instead of O(n²) by tracking the column offset as tables are added.

Implementations

impl SchemaBuilder

pub fn new() -> Self

Create a new empty schema builder

pub fn from_schema(schema: CombinedSchema) -> Self

Create a schema builder initialized with an existing CombinedSchema

Note: Table names are already normalized via TableIdentifier

pub fn add_table(&mut self, name: String, schema: TableSchema) -> &mut Self

Add a table to the schema

This is an O(1) operation - columns are not copied, just indexed Note: Table names are automatically normalized via TableIdentifier for case-insensitive lookups

pub fn build(self) -> CombinedSchema

Build the final CombinedSchema

This consumes the builder and produces the schema in O(1) time

pub fn add_column_replacement( &mut self, hidden_idx: usize, replacement_idx: usize, )

Add a column replacement for SELECT * expansion (for RIGHT/FULL OUTER JOINs)

Trait Implementations

impl Debug for SchemaBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SchemaBuilder

fn default() -> Self

Returns the “default value” for a type.