Difference between revisions of "EXPRCHECK()"

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==Class==
 
Expressions and Type Conversion
 
 
 
 
==Purpose==
 
==Purpose==
 
Function to check expression for errors
 
Function to check expression for errors
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==Products==
 
==Products==
Recital Database Server, Recital Mirage Server, Recital Terminal Developer
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Recital Server, Recital  
 
[[Category:Documentation]]
 
[[Category:Documentation]]
 
[[Category:Functions]]
 
[[Category:Functions]]

Latest revision as of 17:13, 27 November 2009

Purpose

Function to check expression for errors


Syntax

EXPRCHECK(<expC>)


See Also

ERROR(), MESSAGE()


Description

The function EXPRCHECK() evaluates the Recital/4GL expression specified in the string <expC>, and returns the appropriate Recital error number, or 0 if the expression evaluated correctly.


Example

function CheckExpr
parameter querystring
if exprcheck(querystring) > 0
    dialog box "Error in Query String: " + message()
    m_ret = .F.
else
    m_ret = .T.
endif
return m_ret


Products

Recital Server, Recital