Release 10.1A: OpenEdge Development:
Progress 4GL Handbook

PREPARE-STRING attribute

Once you have prepared a query, you can verify what its current FOR EACH statement is using the PREPARE-STRING attribute, which returns the effect of the most recent QUERY-PREPARE method, as in this example:

MESSAGE hQuery:PREPARE-STRING VIEW-AS ALERT-BOX.

Figure 19–4 shows the result.

Figure 19–4: PREPARE-STRING message

The PREPARE-STRING attribute applies only to dynamic queries. It does not return the FOR EACH statement used in an OPEN QUERY statement for a static query. The example in the "Using the SELF handle to identify an object in a trigger" section uses this attribute to save off the current FOR EACH statement for a query to restore it if the user’s attempt to replace it with a different one fails.