pub struct PostgresBackend;Expand description
Postgres backend. Specified, not yet wired at runtime.
The M0–M4 pool is still sqlx::SqlitePool; this struct exists so
the system check can flag field-type incompatibilities consistently
today, and so the M5 migration engine can render Postgres DDL ahead
of the runtime wiring. Switching the live pool happens when a real
user lands with a Postgres workload (deferred backlog entry).
Trait Implementations§
Source§impl DatabaseBackend for PostgresBackend
impl DatabaseBackend for PostgresBackend
Source§fn supports(&self, feature: BackendFeature) -> bool
fn supports(&self, feature: BackendFeature) -> bool
Postgres feature catalogue. Source of truth: spec
docs/specs/05-backends-and-system-check.md §7.1. Postgres carries
every BackendFeature umbral reasons about today; HStoreColumns
is reported true and the HSTORE extension stays a DBA concern.
Source§fn map_column(&self, col: &Column) -> ColumnType
fn map_column(&self, col: &Column) -> ColumnType
Postgres lifts Text + max_length = N to VARCHAR(N) so the
length cap is enforced at the database level. Text without
max_length stays TEXT (unbounded). SQLite ignores the
length entirely — VARCHAR(N) and TEXT carry the same
affinity there — so its map_column keeps the default impl.
Source§fn map_type(&self, ty: SqlType) -> ColumnType
fn map_type(&self, ty: SqlType) -> ColumnType
Postgres SqlType -> sea_query::ColumnType mapping. Source of
truth: spec 05-backends-and-system-check.md §7.1.
Auto Trait Implementations§
impl Freeze for PostgresBackend
impl RefUnwindSafe for PostgresBackend
impl Send for PostgresBackend
impl Sync for PostgresBackend
impl Unpin for PostgresBackend
impl UnsafeUnpin for PostgresBackend
impl UnwindSafe for PostgresBackend
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