Data.Win.ADODB.TCustomADODataSet.Lookup
Delphi
function Lookup(const KeyFields: string; const KeyValues: Variant; const ResultFields: string): Variant; override;
C++
virtual System::Variant __fastcall Lookup(const System::UnicodeString KeyFields, const System::Variant &KeyValues, const System::UnicodeString ResultFields);
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| function | public | Data.Win.ADODB.pas Data.Win.ADODB.hpp |
Data.Win.ADODB | TCustomADODataSet |
Description
Retrieves field values from a row that matches specified search values.
Call Lookup to retrieve values for specified fields from a row that matches search criteria. KeyFields is a string containing a semicolon-delimited list of field names on which to search.
KeyValues is a variant array containing the values to match in the key fields. To specify multiple search values, pass KeyValues as a variant array as an argument, or construct a variant array on the fly using the VarArrayOf routine.
ResultFields is a string containing a semicolon-delimited list of field names whose values should be returned from the matching row.
Lookup returns a variant array containing the values from the fields specified in ResultFields.