Function getByKey

Create expression that selects map item identified by key and returns selected data specified by returnType.

getByKey(bin, key, valueType, returnType, ctx?): AerospikeExp
Parameters
- bin: AerospikeExp
  Map bin or map value expression.
- key: AerospikeExp
  Key expression.
- valueType: type
  expression value type.
- returnType: maps.returnType
  Return type.
- Optionalctx: null | Context
  Optional context path for nested CDT.
Returns AerospikeExp
AerospikeExp
- Defined in typings/index.d.ts:15051