Difference between revisions of "SCAN"
From Recital Documentation Wiki
Barrymavin (Talk | contribs) (→Example) |
Barrymavin (Talk | contribs) (→Example) |
||
| Line 27: | Line 27: | ||
<code lang="recital"> | <code lang="recital"> | ||
use customers | use customers | ||
| − | scan all | + | seek "HMT" |
| + | scan all while code = "HMT" | ||
echo "name=" + name + "address=" + address | echo "name=" + name + "address=" + address | ||
endscan | endscan | ||
Revision as of 08:32, 30 November 2009
Purpose
Scans over records in a table and executes a command block for each selected record.
Syntax
SCAN [<scope>] [FOR <condition>] [WHILE <condition>]
[EXIT]
[LOOP]
ENDSCAN
See Also
CONTINUE, DO WHILE, IF, LOCATE
Description
The SCAN ... ENDSCAN command executes a list of commands repeatedly for a specified selection of records while an optionally specified condition is true, or until an EXIT is encountered. The optional LOOP keyword forces control to the beginning of the SCAN.
The SCAN...ENDSCAN command can be used to reduce the programming involved in a LOCATE ... DO WHILE ... CONTINUE construct.
Example
use customers seek "HMT" scan all while code = "HMT" echo "name=" + name + "address=" + address endscan
Products
Recital Database Server, Recital Mirage Server, Recital Terminal Developer
