[英]Insert an array of custom type into a table in postgresql
我正在使用PostgreSQL學習SQL,但是現在我有一個無法解決的問題。 我有一種稱為電話的類型:
CREATE TYPE Phone as
(
DDD varchar(3),
Number Varchar(10),
TypeOf Varchar(15)
)
我必須在學生表中創建一個電話陣列:
CREATE TABLE Students
(
Id INT NOT NULL,
PRIMARY KEY (Id),
name Varchar(50),
status Char,
codCourse int,
FOREIGN KEY (codCourse ) REFERENCES Course (IdCourse) ON DELETE CASCADE,
phones Phone[]
)
我創造了。 但是,當我嘗試像這樣插入學生表時:
INSERT INTO Students (Id, name, status, codCourse , phones)
VALUES (
00001, 'Joaquim Soares Fernando', 'I', 4,
Array[('22','33548795','Telefone')])
我收到此錯誤消息 :
ERROR: column "phones" is of type phone[] but expression is of type record[]
SQL state: 42804
Hint: You will need to rewrite or cast the expression.
Character: 118"
我該如何插入?
您必須將數組顯式轉換為phone[]
類型:
INSERT INTO students (id, name, status, codcourse , phones)
VALUES (
00001, 'Joaquim Soares Fernando', 'I', 4,
array[('22','33548795','Telefone')]::phone[]);
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