# `Capstan.SchemaChange`
[🔗](https://github.com/baselabs/capstan/blob/v1.3.1/lib/capstan/schema_change.ex#L1)

A DDL change: the self-committing DDL transaction's structured effect (ADR-0003).

There is deliberately **no statement-text field**. Raw DDL SQL routinely embeds
literal values (`DEFAULT 'secret'`, partition bounds) — a Rule 1 leak — so the
statement text is redacted before it reaches this struct, telemetry, or any log.
Only the structured `schema`/`table`/`kind` are exposed.

`schema`/`table` name the affected object; `table` is `nil` for schema-level DDL.
`kind` is the DDL kind as an atom (e.g. `:alter_table`, `:create_table`,
`:drop_table`, `:truncate`, `:other`). `gtid` is the self-committing DDL
transaction's own identity.

# `t`

```elixir
@type t() :: %Capstan.SchemaChange{
  gtid: String.t(),
  kind: atom(),
  schema: String.t() | nil,
  table: String.t() | nil
}
```

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*Consult [api-reference.md](api-reference.md) for complete listing*