[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] | Reference for unit 'DB' (#fcl)

# TFieldType

Field data type description

## Declaration

Source position: db.pas line 106

`type TFieldType = (`
`ftUnknown,` |  | Unknown data type
`ftString,` |  | String data value (ansistring)
`ftSmallint,` |  | Small integer value(1 byte, signed)
`ftInteger,` |  | Regular integer value (4 bytes, signed)
`ftWord,` |  | Word-sized value(2 bytes, unsigned)
`ftBoolean,` |  | Boolean value
`ftFloat,` |  | Floating point value (double)
`ftCurrency,` |  | Currency value (4 decimal points)
`ftBCD,` |  | Binary Coded Decimal value (DECIMAL and NUMERIC SQL types)
`ftDate,` |  | Date value
`ftTime,` |  | Time value
`ftDateTime,` |  | Date/Time (timestamp) value
`ftBytes,` |  | Array of bytes value, fixed size (unytped)
`ftVarBytes,` |  | Array of bytes value, variable size (untyped)
`ftAutoInc,` |  | Auto-increment integer value (4 bytes)
`ftBlob,` |  | Binary data value (no type, no size)
`ftMemo,` |  | Binary text data (no size)
`ftGraphic,` |  | Graphical data value (no size)
`ftFmtMemo,` |  | Formatted memo data value (no size)
`ftParadoxOle,` |  | Paradox OLE field data (no size)
`ftDBaseOle,` |  | Paradox OLE field data
`ftTypedBinary,` |  | Binary typed data (no size)
`ftCursor,` |  | Cursor data value (no size)
`ftFixedChar,` |  | Fixed character array (string)
`ftWideString,` |  | Widestring (2 bytes per character)
`ftLargeint,` |  | Large integer value (8-byte)
`ftADT,` |  | ADT value
`ftArray,` |  | Array data
`ftReference,` |  | Reference data
`ftDataSet,` |  | Dataset data (blob)
`ftOraBlob,` |  | Oracle BLOB data
`ftOraClob,` |  | Oracle CLOB data
`ftVariant,` |  | Variant data value
`ftInterface,` |  | interface data value
`ftIDispatch,` |  | Dispatch data value
`ftGuid,` |  | GUID data value
`ftTimeStamp,` |  | Timestamp data value
`ftFMTBcd,` |  | Formatted BCD (Binary Coded Decimal) value.
`ftFixedWideChar,` |  | Fixed wide character date (2 bytes per character)
`ftWideMemo` |  | Widestring memo data
`);`

## Description

TFieldType indicates the type of a TField underlying data, in the DataType property.