Struct Aggregate 

pub struct Aggregate {

    pub function: u32,
    pub kind: u8,
    pub ndirect: i16,
    pub transfn: u32,
    pub finalfn: u32,
    pub combinefn: u32,
    pub serialfn: u32,
    pub deserialfn: u32,
    pub mtransfn: u32,
    pub minvtransfn: u32,
    pub mfinalfn: u32,
    pub finalextra: bool,
    pub mfinalextra: bool,
    pub finalmodify: u8,
    pub mfinalmodify: u8,
    pub sortop: u32,
    pub transtype: u32,
    pub transspace: i32,
    pub mtranstype: u32,
    pub mtransspace: i32,
    pub initval: Option<String>,
    pub minitval: Option<String>,
}

An aggregate function, one row of pg_aggregate.

Fields

function: u32

aggfnoid: the OID of the function in pg_proc. Catalog::create_aggregate sets it.

kind: u8

aggkind: n for a normal aggregate, o for an ordered-set aggregate or h for a hypothetical-set aggregate.

ndirect: i16

aggnumdirectargs: the number of direct arguments of an ordered-set aggregate.

transfn: u32

aggtransfn: the transition function.

finalfn: u32

aggfinalfn: the final function, or 0.

combinefn: u32

aggcombinefn: the combine function, or 0.

serialfn: u32

aggserialfn: the serialization function, or 0.

deserialfn: u32

aggdeserialfn: the deserialization function, or 0.

mtransfn: u32

aggmtransfn: the forward transition function of the moving-aggregate mode, or 0.

minvtransfn: u32

aggminvtransfn: the inverse transition function of the moving-aggregate mode, or 0.

mfinalfn: u32

aggmfinalfn: the final function of the moving-aggregate mode, or 0.

finalextra: bool

aggfinalextra: the final function gets a null for each argument of the aggregate after the state.

mfinalextra: bool

aggmfinalextra: the same for the final function of the moving-aggregate mode.

finalmodify: u8

aggfinalmodify: r read-only, s shareable or w read-write.

mfinalmodify: u8

aggmfinalmodify: the same for the final function of the moving-aggregate mode.

sortop: u32

aggsortop: the sort operator, or 0.

transtype: u32

aggtranstype: the type of the state.

transspace: i32

aggtransspace: the estimate of the size of the state, or 0.

mtranstype: u32

aggmtranstype: the type of the state of the moving-aggregate mode, or 0.

mtransspace: i32

aggmtransspace: the estimate of the size of that state, or 0.

initval: Option<String>

agginitval: the text of the first state, or None for null.

minitval: Option<String>

aggminitval: the text of the first state of the moving-aggregate mode, or None for null.

Trait Implementations

impl Clone for Aggregate

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Aggregate

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Aggregate

impl PartialEq for Aggregate

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Aggregate