The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1999
Filed:
Jan. 21, 1997
Yao-Ching Stephen Chen, Saratoga, CA (US);
Jyh-Herng Chow, San Jose, CA (US);
Roberta Jo Cochrane, Los Gatos, CA (US);
Gene YC. Fuh, San Jose, CA (US);
Nelson Mendonca Mattos, San Jose, CA (US);
Mir Hamid Pirahesh, San Jose, CA (US);
Jeffrey D Richey, Santa Clara, CA (US);
Brian Thinh-Vinh Tran, San Jose, CA (US);
Tuong Chanh Truong, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A framework for a query compiler and run-time environment for resolving a table reference to a dynamic table that is first identified at run-time but is initially unknown at compile-time. A parser parses the table reference and creates a parsed representation for the table that identifies the type of dynamic table. A code generator creates executable plans containing run-time table object representations (TAOB), from the parsed representations, that contain the type of dynamic table. The TAOB is also extended to provide for parameters that are definable at run-time, including a table ID of the actual table entity being referenced. A routine is embedded in a run-time routine that checks the type of dynamic table in the TAOB and dispatches control to one of a plurality of corresponding routines, depending upon the type of dynamic table. The corresponding routines use the extended TAOB to dynamically link the table reference to the dynamic table, depending upon the type of dynamic table. Once the dynamic table has been linked to the table reference, query processing continues as if that table were a base or derived table.