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TableSchema

Struct TableSchema 

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pub struct TableSchema {
    pub columns: Vec<ColumnDef>,
    pub primary_key: Vec<ColId>,
    pub pk_is_rowid_alias: bool,
    pub without_rowid: bool,
}
Expand description

The discovered shape of a registered table: columns in cid (== [ColId]) order plus the primary-key column ids. Feeds TableSource::try_new. Clone so the coordinator can fan one discovered schema out to every worker (it is Send: ColumnDef is Box<str> + scalars). Public via the crate’s embedded-engine seam (design 308): a host that drives crate::Engine directly discovers with discover and registers the result.

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§columns: Vec<ColumnDef>§primary_key: Vec<ColId>§pk_is_rowid_alias: bool

true when the primary key is a single INTEGER PRIMARY KEY column — a rowid alias. Such a PK is already unique and point-lookupable via the rowid, so it needs no separate UNIQUE index (ensure_unique_pk_index skips it, and TableSource recognizes it). Detected from the declared column type during discover.

§without_rowid: bool

Whether SQLite stores the table WITHOUT ROWID. Such a table’s INTEGER primary key is an ordinary primary-key column, never a rowid alias.

Trait Implementations§

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impl Clone for TableSchema

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fn clone(&self) -> TableSchema

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn borrow_mut(&mut self) -> &mut T

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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Returns the argument unchanged.

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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