语法:

CREATE TYPE {schema.}name AS TABLE (name1 type1 {, name2 type2,...})

实列1:

CREATE TYPE   tt_publishers AS TABLE (

publisher  INTEGER,

name  VARCHAR(50),

price DECIMAL,

cnt  INTEGER

);

实列2:

CREATE type  tt_year AS TABLE(

year varchar(4),

price decimal,

cnt integer

);

删除类型:

语法:DROP TYPE {schema.}name {CASCADE}

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