云数据库 MySQL

云数据库(RDS for MySQL)是稳定可靠、可弹性伸缩的云数据库服务。通过云数据库能够让您几分钟内完成数据库部署。云端完全托管，让您专注于应用程序开发，无需为数据库运维烦恼

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云数据库MySQL

云数据库(RDS for MySQL)是稳定可靠、可弹性伸缩的云数据库服务。通过云数据库能够让您几分钟内完成数据库部署。云端完全托管，让您专注于应用程序开发，无需为数据库运维烦恼

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查看所有线程(IO线程和SQL线程)，只有1个IO线程和97个SQL线程(1个SQL协调线程，96个SQL执行线程)。SQL协调线程：把二进制日志解析后分发给SQL线程执行。SQL执行线程：执行SQL语句 1 show processlist;

查看从库状态。 查看slave状态。

比较运算符语句 语句 说明 示例 x = y 等于。 SELECT num1 < num2 x <> y 不等于。 SELECT num1 <> num2 x > y 大于。 SELECT num1 > num2 x >= y 大于或等于。 SELECT num1 >= num2 x

dpkg -l zlib1g-dev | grep zlib1g-dev | grep ii

dpkg -l libsqlite3-dev | grep libsqlite3-dev | grep ii

dpkg -l openssl | grep openssl | grep ii

ii

dpkg -l zlib1g-dev| grep zlib1g-dev| grep ii

dpkg -l libsqlite3-dev| grep libsqlite3-dev| grep ii

dpkg -l openssl| grep openssl| grep ii

ii

dpkg -l libbz2-dev| grep libbz2-dev| grep ii

dpkg -l libsqlite3-dev| grep libsqlite3-dev| grep ii

dpkg -l openssl| grep openssl| grep ii

dpkg

gcc 7.3.0及以上 gcc-c++ 7.3.0及以上 zlib-devel libffi-devel openssl-devel sqlite-devel unzip pciutils net-tools lapack lapack-devel blas blas-devel

ii

dpkg -l libbz2-dev| grep libbz2-dev| grep ii

dpkg -l libsqlite3-dev| grep libsqlite3-dev| grep ii

dpkg -l libssl-dev| grep libssl-dev| grep

ii

dpkg -l libbz2-dev| grep libbz2-dev| grep ii

dpkg -l libsqlite3-dev| grep libsqlite3-dev| grep ii

dpkg -l libssl-dev| grep libssl-dev| grep

gcc-c++ unzip zlib-devel libffi-devel openssl-devel pciutils net-tools sqlite-devel blas-devel lapack-devel openblas-devel gcc-gfortran 无版本要求，安装的版本以操作系统自带的源为准。

ii

dpkg -l libbz2-dev| grep libbz2-dev| grep ii

dpkg -l libsqlite3-dev| grep libsqlite3-dev| grep ii

dpkg -l openssl| grep openssl| grep ii

dpkg

ii

dpkg -l libbz2-dev| grep libbz2-dev| grep ii

dpkg -l libsqlite3-dev| grep libsqlite3-dev| grep ii

dpkg -l openssl| grep openssl| grep ii

dpkg

gcc-c++ unzip zlib-devel libffi-devel openssl-devel pciutils net-tools sqlite-devel blas-devel lapack-devel openblas-devel gcc-gfortran 无版本要求，安装的版本以操作系统自带的源为准。

gcc-c++ unzip zlib-devel libffi-devel openssl-devel pciutils net-tools sqlite-devel blas-devel lapack-devel openblas-devel gcc-gfortran 无版本要求，安装的版本以操作系统自带的源为准。

ii

dpkg -l libbz2-dev| grep libbz2-dev| grep ii

dpkg -l libsqlite3-dev| grep libsqlite3-dev| grep ii

dpkg -l openssl| grep openssl| grep ii

dpkg

ii

dpkg -l libbz2-dev| grep libbz2-dev| grep ii

dpkg -l libsqlite3-dev| grep libsqlite3-dev| grep ii

dpkg -l openssl| grep openssl| grep ii

dpkg