if else else if sql
你知道为什么ELSE在我的代码中很好吗?最后ELSE。林试图创建程序,但我有问题,如果子句if else else if sql
有人可以帮助我吗?我知道解决方案与最大值的id和加1它不好,但它是暂时的。以后我会尝试实施更好的办法
CREATE PROCEDURE dodajAuto
(@marka VARCHAR,
@model VARCHAR,
@kolor VARCHAR,
@moc INT,
@dataProdukcji DATETIME,
@cena DECIMAL,
@typ VARCHAR,
@przebieg INT)
AS
BEGIN
DECLARE @tmpMarka VARCHAR = (SELECT MARKA FROM MARKA WHERE MARKA=MARKA)
DECLARE @tmpModel VARCHAR = (SELECT MODEL FROM MODEL WHERE MODEL=MODEL)
DECLARE @tmpIdModelu INT = (SELECT IDMODELU FROM MODEL WHERE MODEL=MODEL)
DECLARE @tmpIdMarki INT = (SELECT IDMARKI FROM MARKA WHERE MARKA=MARKA)
DECLARE @tmpLastIdSamochodu INT = (SELECT MAX(IDSAMOCHODU) FROM SAMOCHOD)
DECLARE @tmpLastIdModelu INT = (SELECT MAX(IDMODELU) FROM MODEL)
DECLARE @tmpLastIdMarki INT = (SELECT MAX(IDMARKI) FROM MARKA)
IF (@tmpMarka IS NOT NULL)
IF (@tmpModel IS NOT NULL)
INSERT INTO SAMOCHOD
VALUES (@tmpLastIdSamochodu+1, @tmpIdModelu, @kolor, @moc, @przebieg, @dataPRodukcji, @typ);
ELSE
INSERT INTO MODEL
VALUES (@tmpLastIdModelu+1, @tmpIdMarki, @model, @cena)
SET @tmpIdModelu = (SELECT IDMODELU FROM MODEL WHERE MODEL = MODEL)
INSERT INTO SAMOCHOD
VALUES (@tmpLastIdSamochodu+1, @tmpIdModelu, @kolor, @moc, @przebieg, @dataProdukcji, @typ);
ELSE --THIS IS WHERE SYNTAX IS HIGLIHTED,
INSERT INTO MARKA VALUES (@tmpLastIdMarki+1, @marka)
SET @tmpIdMarki = (SELECT IDMARKI FROM MARKA WHERE MARKA = MARKA)
INSERT INTO MODEL
VALUES (@tmpLastIdModelu+1, @tmpIdMarki, @model, @cena)
SET @tmpIdModelu = (SELECT IDMODELU FROM MODEL WHERE MODEL = MODEL)
INSERT INTO SAMOCHOD
VALUES (@tmpLastIdSamochodu+1, @tmpIdModelu, @kolor, @moc, @przebieg, @dataProdukcji, @typ);
if
和else
仅适用于单个语句后他们。如果您使用begin;
和end;
进行多步操作来执行分组操作。
始终声明大小varchar()
和nvarchar()
数据类型,并且精度和标度为decimal()
和numeric()
数据类型。
Bad habits to kick : declaring VARCHAR without (length) - Aaron Bertrand
create procedure dodajAuto(
@marka varchar(30)
, @model varchar(30)
, @kolor varchar(30)
, @moc int
, @dataProdukcji datetime
, @cena decimal(18,0)
, @typ varchar(30)
, @przebieg int)
as
begin;
set nocount, xact_abort on;
declare @tmpMarka varchar(30) = (select marka from marka where [email protected]);
declare @tmpModel varchar(30) = (select model from model where [email protected]);
declare @tmpIdModelu int = (select idmodelu from model where [email protected]);
declare @tmpIdMarki int = (select idmarki from marka where [email protected]);
declare @tmpLastIdSamochodu int = (select max(idsamochodu) from samochod);
declare @tmpLastIdModelu int = (select max(idmodelu) from model);
declare @tmpLastIdMarki int = (select max(idmarki) from marka);
if (@tmpMarka is not null)
if (@tmpModel is not null)
insert into samochod values (@tmpLastIdSamochodu+1, @tmpIdModelu, @kolor, @moc, @przebieg, @dataprodukcji, @typ);
else
begin;
insert into model values (@tmpLastIdModelu+1, @tmpIdMarki, @model, @cena);
set @tmpIdModelu = (select idmodelu from model where [email protected]);
insert into samochod values (@tmpLastIdSamochodu+1, @tmpIdModelu, @kolor, @moc, @przebieg, @dataProdukcji, @typ);
end;
else
begin;
insert into marka values (@tmpLastIdMarki+1, @marka);
set @tmpIdMarki = (select idmarki from marka where [email protected]);
insert into model values (@tmpLastIdModelu+1, @tmpIdMarki, @model, @cena);
set @tmpIdModelu = (select idmodelu from model where [email protected]);
insert into samochod values (@tmpLastIdSamochodu+1, @tmpIdModelu, @kolor, @moc, @przebieg, @dataProdukcji, @typ);
end;
end;
go
在这段代码中,我得到';'错误接近尾声ang'go'高亮 – javaSqlWebDesignRubyOnPhp
好的。最后还有另一个结局的运气。现在工作正常。非常感谢;) – javaSqlWebDesignRubyOnPhp
@javaSqlWebDesignRubyOnPhp乐于帮忙! – SqlZim
您的代码是没有意义的。你有更大的问题,比如'MODEL = MODEL'。 –
另外,为什么在'IF-ELSE'中的'INSERT'语句末尾的';'块? –
[不良习惯踢:声明VARCHAR没有(长度) - 亚伦伯特兰](http://sqlblog.com/blogs/aaron_bertrand/archive/2009/10/09/bad-habits-to-kick-declaring-varchar-没有length.aspx) – SqlZim