Konstantin Tomov
This sample demonstrates how to define the client-side aggregating formulas with TFDQuery. You can find out more about aggregated fields and values in the Embarcadero DocWiki. The fkAggregate aggregated fields management is similar to the expression calculated fields… – Details…
2 years ago in aggregates, Code, database, Delphi, firedac, ios, linux, macos, object pascal, programming, Query, RAD Studio, Tfdquery, windows
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Konstantin Tomov
This sample demonstrates two ways of handling errors in an array DML execution. To this end, the sample implements two ways of handling the errors: Implementing an OnError event. Using the EFDDBEngineException class on a loop. Location You can find the BatchErrorHandling sample project… – Details…
2 years ago in android, array dml, batch, Code, Delphi, error handling, firedac, ios, linux, macos, object pascal, programming, Query, RAD Studio, windows
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Konstantin Tomov
The Indices sample shows you how to use the Indexes property of TFDQuery in order to specify a collection of indexes at design time and determine the data view of each index, including a sort order of the records. Moreover, you… – Details…
2 years ago in android, Code, database, Delphi, firedac, ios, linux, macos, object pascal, programming, Query, RAD Studio, view, windows
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Konstantin Tomov
This sample demonstrates how to use the filter feature of TFDQuery. To this end, the sample implements different preset filters. Moreover, you can edit your own filtering condition and apply the filter to a dataset in order to… – Details…
2 years ago in android, Code, database, Delphi, filter, firedac, ios, linux, macos, object pascal, programming, Query, RAD Studio, vcl, windows
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Konstantin Tomov
The Blobs sample shows you how to create a BLOB stream for reading and/or writing the value of a specific BLOB field on a specific record. To this end, the sample uses the CreateBlobStream method of TFDQuery to create a read-only BLOB stream…. – Details…
2 years ago in android, Code, cross-platform, database, Delphi, firedac, ios, linux, macos, object pascal, programming, Query, RAD Studio, windows
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