The database server automatically issues the UPDATE statistics statement to recalculate routine statistics for all SPL routines that reference the table.
Routine ACCESS multi table query, database programming source code, a good reference.
说明：ACCESS多表查询例程，数据库编程源码，很好的参考资料。
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Once the reference to the lookup structure is obtained as import_context, the client applications can use this routine to get compatible binding information for a given interface.