因为这样应用程序首先将二进制值转换成字符串(尺寸是它的两倍),服务器受到字符后又将他转换成二进制值.存储过程就没有这些动作: 方法:Create procedure p_insert as insert into table(Fimage) values (@image), 在前台调用这个存储过程传入二进制参数,这样处理速度明显改善。 29、Between在某些时候比IN 速度更快,...
1 row in set (0.01 sec) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. SHOW PROCEDURE STATUS – 显示存储过程信息(需要先创建存储过程,详情请看“存储过程文章”) AI检测代码解析 mysql> SHOW PROCEDURE STATUS LIKE 'sp1'\G *** 1. row *** Db: test Name: sp1 Ty...
1 show create procedure 存储过程名称; 13.查看函数的内容. 1 show create function func_name; ... 由于这几个show指令的参数太多,这里单独进行解析. 使用show status 查看MySQL服务器状态信息. 有些时候我们需要了解MySQL的服务器状态信息,譬如当前MySQL启动后的运行时间,当前MySQL的客户端会话连接数,当前MySQL...
The thread is trying to open a table. This is should be very fast procedure, unless something prevents opening. For example, an ALTER TABLE or a LOCK TABLE statement can prevent opening a table until the statement is finished. preparing This state occurs during query optimization. Purging old ...
authenticated successfully.Opening tables, Opening table The thread is trying to open a table. This is should be very fast procedure, unless something prevents opening. For example, an ALTER TABLE or a LOCK TABLE statement can prevent opening a table until the statement is finished.preparing This...
Applies to: SQL Server Azure SQL Managed Instance Returns the commands for transactions marked for replication in readable format. sp_replshowcmds can be run only when client connections (including the current connection) aren't reading replicated transactions from the log. This stored procedure is ...
SQL语句之SHOW语句使用 SQL语句之SHOW语句使⽤ SHOW语句有许多形式，提供关于服务器的数据库、表、列或状态信息的信息。SHOW语法格式：SHOW 关键字 LIKE 'pattern'如果对于⼀个给定的说明语句的语法包括像'模式'，'模式'是⼀个字符串，可以包含“%”和“_“通配符。该模式是有⽤的限制语句输出匹配的值。本...
SQL Server Azure SQL Managed Instance Returns the commands for transactions marked for replication in readable format.sp_replshowcmdscan be run only when client connections (including the current connection) aren't reading replicated transactions from the log. This stored procedure is executed...
benchmarksql加载1000仓数据时,数据库实例发生coredump。 core堆栈信息如下: #00x00007f51315a39d1inpthread_kill()from/lib64/libpthread.so.0#10x00000000013258cdinhandle_fatal_signal()at/src/sql/signal_handler.cc:228#2<signal handler called>#30x0000000001339244inmem_root_deque<Item*>::push_back()at...
CREATE PROCEDURE CREATE POLICY CREATE OPERATOR FAMILY CREATE OPERATOR CREATE OPERATOR CLASS CREATE MATERIALIZED VIEW CREATE LANGUAGE CREATE INDEX CREATE GROUP CREATE FUNCTION CREATE FUNCTION ... AGGREGATE USING type_name CREATE EXTENSION CREATE EVENT TRIGGER CREATE DOMAIN CREATE DATABASE CREATE CONVERSION CRE...