MySQL基础：搭建bc网站sql执行错误时的控制方式

行语句的正常执行 搭建bc网站q<277.03.4.83.6> 比如执行多条正常执行的语句，示例命令如下所示：   select version();   select "Hello LiuMiao" as "Greetings";   select 20+22 as Result; 使用HereDocument方式执行如下所示： liumiaocn:~ liumiao$ mysql -uroot -proot <<EOF >   select version(); >   select "Hello LiuMiao" as "Greetings"; >   select 20+22 as Result; > EOF mysql: [Warning] Using a password on the command line interface can be insecure. version() 8.0.11 Greetings Hello LiuMiao Result 42 liumiaocn:~ liumiao$  多行语句中间出错时的缺省动作 Oracle多行语句执行出错时在sqlplus中会继续执行，而在mysql控制台中会怎样呢？我们可以在上述语句中添加一行错误的语法或者命令来进行验证： mysql -uroot -proot <<EOF   select version();   errorcommand;   select "Hello LiuMiao" as "Greetings";   select 20+22 as Result; EOF 执行结果如下所示 liumiaocn:~ liumiao$ mysql -uroot -proot <<EOF >   select version(); >   errorcommand; >   select "Hello LiuMiao" as "Greetings"; >   select 20+22 as Result; > EOF mysql: [Warning] Using a password on the command line interface can be insecure. version() 8.0.11 ERROR 1064 (42000) at line 2: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'errorcommand' at line 1 liumiaocn:~ liumiao$  可以看到，缺省情况下碰到错误就停下来了。 WHENEVER SQLERROR 在oracle中通过WHENEVER SQLERROR来进行控制。语法如下所示 WHENEVER SQLERROR {EXIT [SUCCESS | FAILURE | WARNING | n | variable | :BindVariable] [COMMIT | ROLLBACK] | CONTINUE [COMMIT | ROLLBACK | NONE]}