Struct DCountAFn 

pub struct DCountAFn;

Trait Implementations

impl Debug for DCountAFn

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

Formats the value using the given formatter.

impl Function for DCountAFn

Counts non-blank values in a database field for records matching criteria.

Remarks

• DCOUNTA counts both text and numeric non-empty values.
• Criteria rows are OR-ed; criteria columns in the same row are AND-ed.
• Blank cells are excluded from the count.

Examples

title: "Count non-blank names where score > 80"
grid:
  A1: "Name"
  B1: "Score"
  A2: "Ana"
  B2: 92
  A3: "Bo"
  B3: 75
  A4: "Cy"
  B4: 88
  D1: "Score"
  D2: ">80"
formula: "=DCOUNTA(A1:B4,\"Name\",D1:D2)"
expected: 2

title: "Count all non-blank values in a field"
grid:
  A1: "Item"
  A2: "X"
  A3: "Y"
  A4: ""
  C1: "Item"
formula: "=DCOUNTA(A1:A4,\"Item\",C1:C1)"
expected: 2

related:
  - DCOUNT
  - DGET
  - COUNTA
faq:
  - q: "What is treated as blank in DCOUNTA?"
    a: "Empty cells and empty strings are treated as blank; other value types are counted when their row matches criteria."

[formualizer-docgen:schema:start] Name: DCOUNTA Type: DCountAFn Min args: 3 Max args: 1 Variadic: false Signature: DCOUNTA(arg1: any@scalar) Arg schema: arg1{kinds=any,required=true,shape=scalar,by_ref=false,coercion=None,max=None,repeating=None,default=false} Caps: PURE, REDUCTION [formualizer-docgen:schema:end]

fn caps(&self) -> FnCaps

Capability flags for this function

fn name(&self) -> &'static str

fn min_args(&self) -> usize

fn variadic(&self) -> bool

fn arg_schema(&self) -> &'static [ArgSchema]

fn eval<'a, 'b, 'c>( &self, args: &'c [ArgumentHandle<'a, 'b>], ctx: &dyn FunctionContext<'b>, ) -> Result<CalcValue<'b>, ExcelError>

The unified evaluation path.

fn namespace(&self) -> &'static str

fn volatile(&self) -> bool

fn aliases(&self) -> &'static [&'static str]

Optional list of additional alias names (case-insensitive) that should resolve to this function. Default: empty slice. Implementors can override to expose legacy names. Returned slice must have ’static lifetime (typically a static array reference).

fn function_salt(&self) -> u64

fn eval_reference<'a, 'b, 'c>( &self, _args: &'c [ArgumentHandle<'a, 'b>], _ctx: &dyn FunctionContext<'b>, ) -> Option<Result<ReferenceType, ExcelError>>

Optional reference result path. Only called by the interpreter/engine when the callsite expects a reference (e.g., range combinators, by-ref argument positions, or spill sources).

fn dispatch<'a, 'b, 'c>( &self, args: &'c [ArgumentHandle<'a, 'b>], ctx: &dyn FunctionContext<'b>, ) -> Result<CalcValue<'b>, ExcelError>

Dispatch to the unified evaluation path with automatic argument validation.