FetchBlobBytes

Class: TMMScript

function FetchBlobBytes(
           const ATableName, 
           AColumnName: string;
           APKParams: TJSONArray;
           out AData: TBytes;
           out AIsBinary: Boolean;
           out AIsNull: Boolean): Boolean;

Downloads a single BLOB or CLOB column value into a raw byte array.
The lower-level counterpart to FetchBlob; use this when you need to process the bytes programmatically before writing to a field or file.

Parameter	Meaning
`ATableName`	Source table on the remote server
`AColumnName`	Source column; use `Columns[I].SourceName`
`APKParams`	`TJSONArray` of `{col, val}` pairs; obtain via `BuildPKParams`
`AData`	Receives the raw bytes on success; empty when `AIsNull = True`
`AIsBinary`	`True` when the column is a binary type (BLOB/BINARY/VARBINARY/BIT)
`AIsNull`	`True` when the server value is SQL NULL; `AData` is empty

Returns True on success (including NULL values).

FetchBlobBytes

See Also