All the constants referred to in this chapter are defined in theODCIConstpackage installed as part of thecatodci.sqlscript. There are equivalent definitions for use within C routines inodci.h. You should use these constants instead of hard coding their underlying values in your routines. To ensu...
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Two nested tables are equal if they have the same named type, have the same cardinality, and their elements are equal. Elements are equal depending on whether they are equal by the elements own equality definitions, except for object types which require a map method. Equality is determined in...
1. Finite Sets:A set is said to be finite if it contains exactly n distinct element where n is a non-negative integer. Here, n is said to be "cardinality of sets." The cardinality of sets is denoted by|A|, # A, card (A) or n (A). Example: Cardinality of empty set θ is ...
5-1 and 5-5 SELECT CARDINALITY(math_majors) FROM students; CARDINALITYファンクションの詳細は、『Oracle Database SQL言語リファレンス』を参照してください。 5.3.5.2 COLLECT COLLECTファンクションは集計関数で、要素のセットから多重集合を作成します。入力として要素型の列を取り、選択...
5-1 and 5-5 SELECT CARDINALITY(math_majors) FROM students; CARDINALITYファンクションの詳細は、『Oracle Database SQL言語リファレンス』を参照してください。 5.3.5.2 COLLECT COLLECTファンクションは集計関数で、要素のセットから多重集合を作成します。入力として要素型の列を取り、選択...