使用MySql插入語句

Question

create table enquiry (
    eqid integer not null auto_increment primary key,
    question varchar(500),
    cusID integer(100),
    tpid integer(100),
    staffid integer(100)
 );

alter table enquiry add foreign key(tpid) references tourpackage (tpid) ON DELETE CASCADE ON UPDATE CASCADE;

alter table enquiry add foreign key(staffid) references staff (staffid) ON DELETE CASCADE ON UPDATE CASCADE;

alter table enquiry add foreign key(cusID) references customer (cusID) ON DELETE CASCADE ON UPDATE CASCADE;

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insert into enquiry
    values (0, "What is the minimum travel group size?",0,0,0);

insert into enquiry
    values (0, "Can we return at a later date?",0,0,0);

insert into enquiry
    values (0, "I would like to use my KrisFlyer miles points to redeem an air ticket. Is it possible?",0,0,0);

我在插入查詢值時遇到問題。錯誤狀態無法添加或更新子行。

Answer 1

您的插入內容可能應如下所示：

insert into enquiry (question)
    values ('What is the minimum travel group size?');

您不應該插入自動遞增的主鍵中。 讓數據庫在那里為您完成工作。

我猜想其他列的“ 0”值旨在表示“無參考”。 如果是這樣，讓數據庫只插入NULL 。 否則，您需要確保每個參考表都有一個“ 0”值。