pub struct ReservedColumnId;
Expand description
Column id reserved by the engine.
All reserved column id has MSB (Most Significant Bit) set to 1.
Reserved column includes version column and other internal columns.
Implementations§
source§impl ReservedColumnId
impl ReservedColumnId
const BASE: ColumnId = 2_147_483_648u32
sourcepub const fn version() -> ColumnId
pub const fn version() -> ColumnId
Column id for version column. Version column is a special reserved column that is enabled by user and visible to user.
sourcepub const fn table_id() -> ColumnId
pub const fn table_id() -> ColumnId
Id for storing logical table id column.
Used by: metric engine
sourcepub fn is_reserved(column_id: ColumnId) -> bool
pub fn is_reserved(column_id: ColumnId) -> bool
Test if the column id is reserved.
Auto Trait Implementations§
impl Freeze for ReservedColumnId
impl RefUnwindSafe for ReservedColumnId
impl Send for ReservedColumnId
impl Sync for ReservedColumnId
impl Unpin for ReservedColumnId
impl UnwindSafe for ReservedColumnId
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