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> Calcula la operación AND de una columna bitmap y devuelve una cardinalidad de tipo UInt64; si se añade el sufijo -State, devuelve un objeto bitmap.

# groupBitmapAnd

<div id="groupBitmapAnd">
  ## groupBitmapAnd
</div>

Introducido en: v20.1.0

Calcula el AND de una columna bitmap y devuelve su cardinalidad.
Si se añade el combinador de sufijo [`-State`](/es/reference/functions/aggregate-functions/combinators#-state), devuelve un objeto bitmap.

**Sintaxis**

```sql theme={null}
groupBitmapAnd(expr)
groupBitmapAndState(expr)
```

**Argumentos**

* `expr` — Expresión cuyo resultado es del tipo `AggregateFunction(groupBitmap, UInt*)`. [`AggregateFunction(groupBitmap, UInt*)`](/es/reference/data-types/aggregatefunction)

**Valor devuelto**

Devuelve un recuento de tipo `UInt64` o un objeto bitmap cuando se utiliza `-State`. [`UInt64`](/es/reference/data-types/int-uint)

**Ejemplos**

**Ejemplo de uso**

```sql title=Query theme={null}
CREATE TABLE bitmap_column_expr_test2
(
    tag_id String,
    z AggregateFunction(groupBitmap, UInt32)
)
ENGINE = MergeTree
ORDER BY tag_id;

INSERT INTO bitmap_column_expr_test2 VALUES ('tag1', bitmapBuild(cast([1,2,3,4,5,6,7,8,9,10] AS Array(UInt32))));
INSERT INTO bitmap_column_expr_test2 VALUES ('tag2', bitmapBuild(cast([6,7,8,9,10,11,12,13,14,15] AS Array(UInt32))));
INSERT INTO bitmap_column_expr_test2 VALUES ('tag3', bitmapBuild(cast([2,4,6,8,10,12] AS Array(UInt32))));

SELECT groupBitmapAnd(z) FROM bitmap_column_expr_test2 WHERE like(tag_id, 'tag%');
```

```response title=Response theme={null}
┌─groupBitmapAnd(z)─┐
│               3   │
└───────────────────┘
```

**Uso del combinador -State**

```sql title=Query theme={null}
SELECT arraySort(bitmapToArray(groupBitmapAndState(z))) FROM bitmap_column_expr_test2 WHERE like(tag_id, 'tag%');
```

```response title=Response theme={null}
┌─arraySort(bitmapToArray(groupBitmapAndState(z)))─┐
│ [6,8,10]                                         │
└──────────────────────────────────────────────────┘
```