Crate cratestack_sql 

Dialect-agnostic SQL primitives shared by the Postgres (cratestack-sqlx) and SQLite (cratestack-rusqlite) backends.

This crate carries the type definitions every backend agrees on:

• SqlValue / SqlColumnValue — value envelopes used to bind data
• CreateModelInput / UpdateModelInput / UpsertModelInput — traits the codegen emits
• Filter / FilterExpr / FieldRef — query AST
• OrderClause / SortDirection — ordering AST
• ModelDescriptor / ModelColumn / CreateDefault — schema metadata baked into compiled code by include_schema!

Rendering SQL strings, executing queries, and any DB-driver coupling live in the backend crates.

Structs

CreateDefault

FieldRef

Filter

ModelColumn

ModelDescriptor

OrderClause

PostgresDialect

Postgres dialect — $N placeholders.

RelationFilter

SqlColumnValue

SqliteDialect

SQLite dialect — ?N placeholders.

Enums

CreateDefaultType

FilterExpr

FilterOp

FilterValue

OrderTarget

RelationQuantifier

SortDirection

SqlValue

Traits

CreateModelInput

Dialect

Backend SQL dialect.

IntoSqlValue

UpdateModelInput

UpsertModelInput

Input shape for the upsert primitive — INSERT … ON CONFLICT (<pk>) DO UPDATE …. sql_values() must include the primary-key column (so the backend can target the conflict), and primary_key_value() exposes the PK separately so the runtime can issue a SELECT … FOR UPDATE before the upsert to drive Created vs. Updated event / audit semantics.