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Annotation of 42BSD/ingres/doc/quel/range.nr, revision 1.1

1.1     ! root        1: .th RANGE QUEL 2/29/79
        !             2: .sh NAME
        !             3: range \- declare a variable to range over a relation
        !             4: .sh SYNOPSIS
        !             5: .bd "range of"
        !             6: variable 
        !             7: .bd is
        !             8: relname
        !             9: .sh DESCRIPTION
        !            10: .it Range 
        !            11: is used to declare variables which will be used in subsequent
        !            12: \s-2QUEL\s0 statements.
        !            13: The 
        !            14: .it variable 
        !            15: is associated with the relation specified by 
        !            16: .it relname.
        !            17: When the 
        !            18: .it variable 
        !            19: is used in subsequent statements it will refer
        !            20: to a tuple in the named relation.
        !            21: A range declaration remains in effect for an entire 
        !            22: \*(II session
        !            23: (until exit from \*(II), until the variable is redeclared by a subsequent
        !            24: range statement, or until the relation is removed with the destroy command.
        !            25: .sh EXAMPLE
        !            26: .nf
        !            27: /\*(** Declare tuple variable e to range over relation emp \*(**/
        !            28:    range of e is emp
        !            29: .fi
        !            30: .sh "SEE ALSO"
        !            31: quel(quel), destroy(quel)
        !            32: .sh BUGS
        !            33: Only 10 variable declarations may be in effect at any time.
        !            34: After the 10th range statement,
        !            35: the least recently referenced
        !            36: variable is re-used for the next
        !            37: range statement.

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