java - 如何在 Java 中执行多条 sql 行？

Question

这三行代码必须同时执行。

  SET @num := 0;

        UPDATE your_table SET id = @num := (@num+1);

        ALTER TABLE tableName AUTO_INCREMENT = 1;
    ********************************************************
    Statement s1 = DataCon.getDataCon().createStatement();
                            s1.execute("SET @num := 0; UPDATE tblstaff SET staffid = @num := (@num+1); ALTER TABLE tblstaff AUTO_INCREMENT = 1");
                            s1.close();

Answer 1

试试这个!如果您想按数字顺序保存数据，我发现它非常有用

Statement stm = DataCon.getDataCon().createStatement(); 
String stm1 = "SET @num := 0"; 
String stm2 = "UPDATE tblstaff SET staffid = @num := (@num+1)"; 
String stm3 = "ALTER TABLE tblstaff AUTO_INCREMENT = 1"; 
stm.addBatch(stm1); 
stm.addBatch(stm2); 
stm.addBatch(stm3); 
stm.executeBatch(); 
stm.close();