UDTのSQL定義 - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL外部ルーチン プログラミング

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
2019年3月
Language
日本語
Last Update
2019-10-29
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ja-JP/uhh1512082756414.ditamap
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dita:id
B035-1147
Product Category
Software
Teradata Vantage

color_t DISTINCT型UDTと、circle_t STRUCTURED型UDTのSQL定義を以下に示します。DISTINCT型UDTであるcolor_tの変換、キャスト、および整列の機能は、Teradata Databaseによって自動生成されます。

CREATE TYPE color_t
   AS VARCHAR(30)
   FINAL;

CREATE TYPE circle_t
   AS (x INTEGER, y INTEGER, radius INTEGER, color color_t)
   NOT FINAL
   CONSTRUCTOR METHOD circle_t( x INTEGER,
                                y INTEGER,
                                radius INTEGER,
                                color color_t )
      RETURNS circle_t
      SPECIFIC circle_t_constructor
      SELF AS RESULT
      NO SQL
      PARAMETER STYLE TD_GENERAL
      DETERMINISTIC
      LANGUAGE C,
   INSTANCE METHOD circle_t_FromSql()
      RETURNS VARCHAR(80)
      SPECIFIC circle_t_FromSql
      NO SQL
      PARAMETER STYLE TD_GENERAL
      DETERMINISTIC
      LANGUAGE C,
   INSTANCE METHOD circle_t_Ordering()
      RETURNS FLOAT
      SPECIFIC circle_t_Ordering
      NO SQL
      PARAMETER STYLE SQL
      DETERMINISTIC
      LANGUAGE C,
   INSTANCE METHOD VarcharCast()
      RETURNS VARCHAR(80)
      SPECIFIC circle_t_Cast
      NO SQL
      PARAMETER STYLE TD_GENERAL
      DETERMINISTIC
      LANGUAGE C;