Clacmp

clacmp allows you to compare two classes (usually two classes that are associated with tables). It compares both the structure and the contents of the class.

Syntax

   clacmp(CLASS_DESCRIPTION,CLASS_DESCRIPTION)

• CLASS_DESCRIPTION is a class description with the [ABBR] syntax, where ABBR is the abbreviation of a class.

Examples

  # Check if the two tables have really the same structure 
  Local File MYTABLE [MYT], COPIEDTABLE [CPTB]
  If clacmp([MYT],[CPTB])=0
    # The table structure are identical (columns, type, dimensions), although the indexes can be different.
  Else
    # If it is not the case, the value returned is 2
  Endif
  # Check if two records are absolutely identical
  Local File MYTABLE [MYT], MYTABLE [MYT1]
  For [MYT] Where A="VALUE1"
    Read [MYT1]KEY1="2";"B"
    # Is the line read on [MYT1] absolutely identical to the line read on [MYT] ?
    If clacmp([MYT1],[MYT])=0
      # The data record is identical
    Else
      # As the table has been opened twice, the structure is identical, but the content is not the same (value 1)
    Endif
    Break
  Next

Description

clacmp allows you to compare two classes given as arguments. The following values can be returned:
* 0 if the class structure and the content of all variables is identical.
* 1 if the class structure is identical, but some variables have different values.
* 2 if the class structure is not identical.

The result of the function is an Integer.

Associated errors

Error	Description
7	A class does not exist.

See also

clalev, clasiz, clanbs, clavar.