FieldSize()

FieldSize()

Determines the size of a given field.

Syntax

      FieldSize(<nFieldNum>) --> nFieldSize

Arguments

<nFieldNum> Data field , which size need to be determined.

Returns

FieldSize() returns the number that designates the size of a given field.

Description

This function determines the size of a field, designated by its number.

Examples

      PROCEDURE Main()
         LOCAL i
         USE tests NEW
         FOR i := 1 TO FCount()
            ? FieldSize( i )
         NEXT
         USE
         RETURN
      xed>

Compliance

This function is CA-Cl*pper tools compatible

Files

Library is libmisc

Seealso

FCount(), FieldNum(), FieldName(), FieldType(), FieldSize(), DBF Structure

FieldDeci()

FieldDeci()

Determines the number of decimal places of a given numeric field.

Syntax

      FieldDeci(<nFieldNum>) --> nFieldDeci

Arguments

<nFieldNum> Numeric data field , for which number of decimal places need to be determined.

Returns

FieldDeci() returns the numeric value that designates the number of decimal places of a given field.

Description

This function determines the number of decimal places of a given numeric field.

Examples

      PROCEDURE Main()
         LOCAL i
         USE tests NEW
         FOR i := 1 TO FCount()
            ? FieldDeci( i )
         NEXT
         USE
         RETURN
      xed>

Compliance

This function is CA-Cl*pper tools compatible

Files

Library is libmisc

Seealso

FCount(), FieldNum(), FieldName(), FieldType(), FieldSize(), DBF Structure

Harbour All Functions – F

Fact

Fahrenheit

FClose()
FCount()
FCreate()
FErase()
FError()
FieldBlock()

FieldDeci()

FieldGet()

FieldName()
FieldPos()
FieldPut()

FieldSize()
FieldType()

FieldWBlock()

File()
FLock()

Floor

FOpen()

Found()

FRead()
FReadStr()
FRename()
FSeek()

FToC

FV

FWrite()

Harbour Database Functions

Database Functions

AFields Fills referenced arrays with database field information
Alias Returns the alias name of a work area
BOF Test for the beggining-of-file condition
dbAppend Appends a new record to a database file
dbClearFilter Clears the current filter condiction in a work area
dbCloseAll Close all open files in all work areas.
dbCloseArea Close a database file in a work area
dbCommit Updates all index and database buffers for a given workarea
dbCommitAll Flushes the memory buffer and performs a hard-disk write
dbCreate Creates an empty database from a array
dbDelete Mark a record for deletion in a database
dbEval Performs a code block operation on the current Database
DBF Alias name of a work area
dbFilter Return the filter expression in a work area
dbGoBottom Moves the record pointer to the bottom of the database
dbGoto Position the record pointer to a specific location
dbGoTop Moves the record pointer to the top of the database
dbRecall Recalls a record previousy marked for deletion
dbSeek Searches for a value based on an active index
dbSelectArea Change to another work area
dbSetDriver Establishes the RDD name for the selected work area
dbSetFilter Establishes a filter condition for a work area
dbSkip Moves the record pointer in the selected work area
dbSkipper Helper function to skip a database
dbStruct Builds a multidimensional array of a database structure
dbUseArea Opens a work area and uses a database file
Deleted Tests the record’s deletion flag
EOF Test for end-of-file condition
FCount Counts the number of fields in an active database
FieldDeci Determines the number of decimal places of a given numeric field
FieldGet Obtains the value of a specified field
FieldName Return the name of a field at a numeric field location
FieldPos Return the ordinal position of a field
FieldPut Set the value of a field variable
FieldSize Determines the size of a given field
FieldType Determines the type of a given field
Found Determine the success of a previous search operation
Header Return the length of a database file header
LastRec Returns the number of records in an active work area or database
LUpdate Yields the date the database was last updated
RecCount Counts the number of records in a database
RecNo Returns the current record number or identity
RecSize Returns the size of a single record in an active database
Select Returns the work area number for a specified alias
Used Checks whether a database is in use in a work area

SP_AFIELDSTYPE

AFIELDSTYPE()

  Short:
  ------
  AFIELDSTYPE() Returns an array of field names of particular type

  Returns:
  --------
  <aFields> => an array of field names of the selected type(s)

  Syntax:
  -------
  AFIELDSTYPE(cTypes)

  Description:
  ------------
  <cTypes> is a string containing one or more field
  type symbols

  Valid symbols are:

       C   character    N   numeric
       L   logical      D    date          M   memo

  If no fields of the specified type(s) exist, an empty
  array will be returned.

  Examples:
  ---------
   aMemos := AFIELDSTYPE("M")  // an array of memo fields
   aNums  := AFIELDSTYPE("N")  // an array of numeric fields
   aNums  := AFIELDSTYPE("LD")  // an array of date &logical fields

  Source:
  -------
  S_AFTYPE.PRG

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SP_AFDECIX

AFDECIX()

  Short:
  ------
  AFDECIX() Returns an array of field DECIMALS for current dbf

  Returns:
  --------
  <aFields> => an array of field DECIMALS for the
  current dbf

  Syntax:
  -------
  AFDECIX()

  Description:
  ------------
  AFDECIX() creates and returns an array of field
  DECIMALS from the current dbf. Unlike AFIELDS(), it does not
  require an initialized array beforehand.

  Examples:
  ---------
   aArray := AFIELDSX()
   aDeci  := AFDECIX()
   if (nSelect := mchoice(aArray,10,10,20,20,"Pick Field")) > 0
      ?"Field "+aArray[nSelect]+" was selected"
      ?" with  decimals "+aDeci[nSelect]
   endif

  Source:
  -------
  S_AFTYPE.PRG

CT_FIELDSIZE

FIELDSIZE()
 Determines the size of a field
------------------------------------------------------------------------------
 Syntax

     FIELDSIZE(<nField>) --> nLength

 Argument

     <nField>  Designates the number of the field to evaluate.

 Returns

     FIELDSIZE() returns a numeric value that corresponds to the field length
     of a valid field number.

 Description

     Use FIELDSIZE() to determine the length (or size) of data field of
     desired data types.  This determines the window width needed for output
     to appear without a line break, or the length needed for an input to
     automatically fit in the database.

 Note

     .  If there is an invalid data field number, the function returns
        a value of 0.

 Example

     Determine the total length of fields 3 to 5:

     nLength  :=  0
     FOR I = 3 TO 5
        nLength := nLength + FIELDSIZE()
     NEXT

See Also:  FCOUNT, FIELDNUM, FIELDNAME, FIELDTYPE, FIELDDECI, PAD, STR, DBF Structure