Question

我有这个存储过程：

Create Procedure spVerhoogPrijzen1
    @artikelcategorie varchar(128),
    @ingangsdatum date
as 
    begin transaction

    update p
    set prijs = prijs * 1.1
    from artikelprijs p 
    join artikel a on a.artikelnr = p.artikelnr
    join artikelcategorie c on c.catcode = a.catcode
    where c.catomschrijving like @artikelcategorie
      and p.begindatum >= @ingangsdatum

    if @@ERROR <> 0
    begin
        rollback
        Raiserror('Je hebt iets fouts ingevuld', 16, 1)
    end
    commit

但是当我运行它时，创建程序需要永远。我在15分钟后停了下来。

我正在使用SQL Server 2014 Management Studio。

Artikel包含：

401 Kaviaar                 lux
402 Ganzenlever             lux
403 Vruchtenyoghurt Aardbei zuv
404 Volle Yoghurt           zuv
405 Magere Kwark            zuv

Artikelcategorie包含：

bio biologische artikelen  
lux luxe artikelen van de traitteur  
zuv zuivelartikelen

Artikelprijs包含：

401 21.50   2012-01-01  2099-12-31  
402 38.95   2012-01-01  2012-12-31  
402 39.95   2013-01-01  2013-10-31  
402 37.00   2013-11-01  2099-12-31  
403 16.25   2012-01-01  2013-07-31

Answer 1

我认为您不需要单个陈述的交易。

尝试一下：

Create Procedure spVerhoogPrijzen1
    @artikelcategorie varchar(128),
    @ingangsdatum date
as 
    update p
    set prijs = prijs * 1.1
    from artikelprijs p 
    join artikel a on a.artikelnr = p.artikelnr
    join artikelcategorie c on c.catcode = a.catcode
    where c.catomschrijving like @artikelcategorie
      and p.begindatum >= @ingangsdatum

    if @@ERROR <> 0
    begin
        Raiserror('Je hebt iets fouts ingevuld', 16, 1)
    end

Answer 2

请您尝试以下程序

public class UpdateDB {

    public static void main(String[] args) {

        Connection c = null;

        try {
            Class.forName("org.sqlite.JDBC");
            c = DriverManager.getConnection("jdbc:sqlite:C:/Users/Andrei/test.db");

            String sql = "SELECT * FROM sqlite_master WHERE type='table'";

            Statement stmt  = c.createStatement();
            ResultSet rs    = stmt.executeQuery(sql);

            List<String> tableNames = new ArrayList<>();

            // loop through the result set
            while (rs.next()) {
                tableNames.add(rs.getString(3));
            }

            System.out.println("BEFORE UPDATE");
            System.out.println("---------------------------");

            for (String table: tableNames) {

                String sqlUpdate = "SELECT * FROM " + table + " ";
                ResultSet rs2 = stmt.executeQuery(sqlUpdate);

                while(rs2.next()) {
                    System.out.println(rs2.getInt("ID") + " " + rs2.getString("AGE"));
                }
            }

            // This is the statement which deletes the rows
            for (String table: tableNames) {
                String sqlUpdate = "DELETE FROM " + table + " WHERE AGE < 20";
                stmt.executeUpdate(sqlUpdate);
            }

            System.out.println();
            System.out.println("AFTER UPDATE");
            System.out.println("---------------------------");

            for (String table: tableNames) {

                String sqlUpdate = "SELECT * FROM " + table + " ";
                ResultSet rs2 = stmt.executeQuery(sqlUpdate);

                while(rs2.next()) {
                    System.out.println(rs2.getInt("ID") + " " + rs2.getString("AGE"));
                }
            }

        } catch (ClassNotFoundException ex) {
            Logger.getLogger(UpdateDB.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SQLException ex) {
            Logger.getLogger(UpdateDB.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

}

根据你的连接条件，一行受影响哪个catcode为403，值为16.25。更新后，此值已更改为17.88。请检查并谢谢。

创建存储过程需要很长时间

2 个答案: