Question

我正在尝试使用序列中的下一个值插入表中。这导致Visual Studio的LocalDB出错，但在SQL Developer中有效。

insert into department (id_department, name, abbreviation, dept_head)
values (id_department_seq.nextval, 'School of Communications, Media, Arts and Design', department_abbreviation_seq.nextval, 'Nate Horowitz');

获取此错误

Msg 4104，Level 16，State 1，Line 63
  多部分标识符＆＃34; id_department_seq.nextval＆＃34;无法受约束。

Msg 4104，Level 16，State 1，Line 63
  多部分标识符＆＃34; department_abbreviation_seq.nextval＆＃34;无法绑定

Answer 1

获取序列的下一个值的语法对我来说很奇怪。我熟悉以下内容：

insert into department (id_department, name, abbreviation, dept_head)
    values (
        NEXT VALUE FOR id_department_seq, 
        'School of Communications, Media, Arts and Design', 
        NEXT VALUE FOR department_abbreviation_seq, 
        'Nate Horowitz'
    );

Answer 2

将此句放在insert语句之前，以确保您创建了序列。

if not exists(select * from sys.sequences where name ='id_department_seq') then
 begin
  create sequence id_department_seq start with 1000 increment by 1 minvalue 1000 maxvalue 99999;
end

insert into ....

从Visual Studio SQL Server

2 个答案: