Module schema 

Schema management for SQL queries

This module provides functionality for:

• Representing database schemas (tables, columns, types)
• Looking up column types for query optimization
• Normalizing identifiers per dialect

Based on the Python implementation in sqlglot/schema.py.

Structs

ColumnInfo

A column with its type and visibility

MappingSchema

A mapping-based schema implementation

Enums

SchemaError

Errors that can occur during schema operations

SchemaNode

A node in the schema tree

Constants

TABLE_PARTS

Supported table argument names

Traits

Schema

Abstract trait for database schemas

Functions

ensure_schema

Ensure we have a schema instance

flatten_schema_paths

Flatten a nested schema to get all table paths

from_simple_map

Helper to build a schema from a simple map

nested_get

Get a value from a nested dictionary-like structure

nested_set

Set a value in a nested dictionary-like structure

normalize_name

Normalize a table or column name according to dialect rules

Type Aliases

SchemaResult

Result type for schema operations