Boe Technology Group Co., Ltd.

Future Wei Technologies, Inc.

Beijing Boe Special Display Technology Co., Ltd.

Ping Lu

Yu Cheng Chen

Wenfei Fan

Demai Ni

Floris Geerts

Yang Cao

A mechanism for rewriting a bounded query onto a view is disclosed. A query, access constraints, and cached view(s) are obtained. The cached view(s) contain results of the query as applied to a dataset stored in a database. A query rewriting plan is generated by adding a fetch from query operation to the plan when a rewritten query variable can be fetched from a query constant. A fetch from database operation is added to the plan when a rewritten query variable can be fetched as a query variable that obtains bounded data from the database. An access view operation is added to the plan when a rewritten query variable can be fetched from the cached view. The query rewriting plan is executed to fetch retrieved data. The query is executed on the retrieved data to determine updated results to the query without reapplying the query to the dataset.

Bounded query rewriting using views

An assembling frame for display units and a display apparatus are provided. The assembling frame comprises: two rectangular side frames disposed opposite to each other in a longitudinal direction, each of top cross beams and bottom cross beams of the two rectangular side frames being provided with at least one first fitting hole extending in a height direction, and each of front side cross beams and rear side cross beams of the two rectangular side frames being provided with at least one second fitting hole extending in the longitudinal direction; at least one front side cross beam connected between two front side vertical posts of the two rectangular side frames; at least one rear side cross beam connected between two rear side vertical posts of the two rectangular side frames; and at least one hanging member mounted to at least one of the front side cross beams for detachably connecting to a back side of the display units. A display apparatus that is arbitrarily extendable in the transverse and/or the longitudinal directions can be formed by using such an assembling frame, and thereby flexibility of application of the display apparatus is improved.

Assembling frame for display unit and display apparatus

Growing community of inventors

Beijing, China

Ping Lu