This chapter covers errors raised when using abstract plans.
An abstract plan describes the execution plan for a query using a language created for that purpose. Adaptive Server can generate an abstract plan for a query, and save the text and its associated abstract plan in the sysqueryplans system table. Using a rapid hashing method, incoming SQL queries can be compared to saved query text, and if a match is found, the corresponding saved abstract plan is used to execute the query.
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