Difference between revisions of "SET OPTLOG"
From Recital Documentation Wiki
Yvonnemilne (Talk | contribs) |
Yvonnemilne (Talk | contribs) |
||
| Line 43: | Line 43: | ||
[[Category:Commands]] | [[Category:Commands]] | ||
[[Category:Set_Commands|OPTLOG]] | [[Category:Set_Commands|OPTLOG]] | ||
| + | [[Category:Performance and Optimization]] | ||
| + | [[Category:Performance and Optimization Set Commands]] | ||
| + | [[Category:Environment]] | ||
| + | [[Category:Environment Set Commands]] | ||
Revision as of 11:13, 2 June 2009
Class
Environment
Purpose
To specify whether logical expression optimization should take place
Syntax
SET OPTLOG ON | OFF
See Also
Description
The SET OPTLOG command is used to specify whether logical expression optimization should take place or not. If SET OPTLOG is OFF, evaluating a logical expression causes the entire expression to be evaluated. If SET OPTLOG is ON, the evaluation of the logical expression is optimized. The optimization causes the evaluation to stop as soon as the result of the evaluation is known.
Example
// No error, even if crash() function does not exist set optlog on ? .F. and crash() // Gives error if crash() function does not exist set optlog off ? .F. and crash() // No error, even if crash() function does not exist set optlog on ? .T. or crash() // Gives error if crash() function does not exist set optlog off ? .T. or crash()
Products
Recital Database Server, Recital Mirage Server, Recital Terminal Developer
