mysql

Row size too large (> 8126) can i just change InnoDB to MyISAM

由 走远了吗. 提交于 2021-02-11 06:25:38
问题 I have this error: Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline. To solve this can i just change InnoDB to MyISAM? 回答1: Yes, you could switch to MyISAM. But that is not necessarily a good idea: MyISAM does not support transactions MyISAM tables often need REPAIR after a crash An InnoDB table can handle more than 8KB per row. Apparently you ran

Row size too large (> 8126) can i just change InnoDB to MyISAM

由 戏子无情 提交于 2021-02-11 06:25:22
问题 I have this error: Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline. To solve this can i just change InnoDB to MyISAM? 回答1: Yes, you could switch to MyISAM. But that is not necessarily a good idea: MyISAM does not support transactions MyISAM tables often need REPAIR after a crash An InnoDB table can handle more than 8KB per row. Apparently you ran

mysqldump工具,工作的本质是什么呢?(dump表的时候,是否会产生drop表的语句)

由 北慕城南 提交于 2021-02-11 06:15:13
需求描述 : 　　今天在看mysqldump工具的使用过程,发现一个同事,是这样写的mysqldump命令 mysqldump -uroot -pmysql employees titles | mysql -uroot -pmysql -D top_server 思考:为啥要这么操作呢?所以,就做了个试验. 操作过程 : 1.首先对mysqldump单独执行 [mysql@redhat6 mysql_backup]$ mysqldump -uroot -pmysql employees titles | more -- MySQL dump 10.13 Distrib 5.5 . 57 , for linux-glibc2. 12 (x86_64) -- -- Host: localhost Database: employees -- ------------------------------------------------------ -- Server version 5.5 . 57 - log /* !40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */ ; /* !40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */ ;

how to use FIND_IN_SET with dataview.rowfilter in vb.net

由 妖精的绣舞 提交于 2021-02-11 06:06:13
问题 I'm using this code to filter my datatable by dataview: Dim xBlockedAccounts As String = "1,5,7" Dim xDv_AllAcc As New DataView(MyVar_Dt_Accounts) xDv_AllAcc.RowFilter = "FIND_IN_SET(AccID," & xBlockedAccounts & ")" Me.Dgv3.DataSource = xDv_AllAcc.ToTable but it gives me that: The expression contains undefined function call FIND_IN_SET().' how I can use FIND_IN_SET function with Rowfilter of Dataview? 回答1: I assumed MyVar_Dt_Accounts was a DataTable . You need to have an array of blocked

how to use FIND_IN_SET with dataview.rowfilter in vb.net

由 二次信任 提交于 2021-02-11 06:05:57
问题 I'm using this code to filter my datatable by dataview: Dim xBlockedAccounts As String = "1,5,7" Dim xDv_AllAcc As New DataView(MyVar_Dt_Accounts) xDv_AllAcc.RowFilter = "FIND_IN_SET(AccID," & xBlockedAccounts & ")" Me.Dgv3.DataSource = xDv_AllAcc.ToTable but it gives me that: The expression contains undefined function call FIND_IN_SET().' how I can use FIND_IN_SET function with Rowfilter of Dataview? 回答1: I assumed MyVar_Dt_Accounts was a DataTable . You need to have an array of blocked

how to use FIND_IN_SET with dataview.rowfilter in vb.net

由 安稳与你 提交于 2021-02-11 06:05:20
问题 I'm using this code to filter my datatable by dataview: Dim xBlockedAccounts As String = "1,5,7" Dim xDv_AllAcc As New DataView(MyVar_Dt_Accounts) xDv_AllAcc.RowFilter = "FIND_IN_SET(AccID," & xBlockedAccounts & ")" Me.Dgv3.DataSource = xDv_AllAcc.ToTable but it gives me that: The expression contains undefined function call FIND_IN_SET().' how I can use FIND_IN_SET function with Rowfilter of Dataview? 回答1: I assumed MyVar_Dt_Accounts was a DataTable . You need to have an array of blocked

Libs and linker with CMake and MySQL C++ Connector?

由 倾然丶 夕夏残阳落幕 提交于 2021-02-11 06:02:14
问题 I download the MySQL C++ Connector, I need it for a project in CLion, now, I was trying to make it run, but it was all in vain, I get the error -1073741515 (0xC0000135), i've read that is about a linking or lib problem. My current CMake: cmake_minimum_required(VERSION 3.6) project(Entrenamiento CXX) set(CMAKE_CXX_STANDARD 14) set(CMAKE_CXX_FLAGS "-Wall") set(SOURCE_FILES main.cpp) set(Entrenamiento_VERSION_MAJOR 1) set(Entrenamiento_VERSION_MINOR 0) add_library(mysqlcppconn SHARED IMPORTED)

Libs and linker with CMake and MySQL C++ Connector?

由 霸气de小男生 提交于 2021-02-11 06:01:17
问题 I download the MySQL C++ Connector, I need it for a project in CLion, now, I was trying to make it run, but it was all in vain, I get the error -1073741515 (0xC0000135), i've read that is about a linking or lib problem. My current CMake: cmake_minimum_required(VERSION 3.6) project(Entrenamiento CXX) set(CMAKE_CXX_STANDARD 14) set(CMAKE_CXX_FLAGS "-Wall") set(SOURCE_FILES main.cpp) set(Entrenamiento_VERSION_MAJOR 1) set(Entrenamiento_VERSION_MINOR 0) add_library(mysqlcppconn SHARED IMPORTED)

SQL JOIN: Just not able to understand them

由 夙愿已清 提交于 2021-02-11 05:55:59
问题 Now, I know know this question related to JOIN have been asked many times. I went through many of them. But it still isn't clear to me. I read these aricles too: http://www.codeproject.com/Articles/33052/Visual-Representation-of-SQL-Joins#_comments and http://www.codinghorror.com/blog/2007/10/a-visual-explanation-of-sql-joins.html but no, it still didn't help. I do understand the Vein diagrams mathematically but not able to grab basic concept behind JOIN . Suppose I have two tables. tbl

Intelij IDEA 内置 sql gui

由 冷暖自知 提交于 2021-02-11 05:40:49
IDEA 内置 自带 SQL GUI 最大意义 会自动识别 domain 对象与数据表的关系，也可以通过 Database 的数据表直接生成 domain 对象等等。 第一步 打开数据库视图 　　 View | Tool Windows | Database 第二步 点击侧边栏 Database ，然后点+号，新增一个数据源（如果提示missing数据库驱动，点击download或ok） 第三步 选择左列数据源 mysql Host. If you database server is on a different computer, replace localhost with the FQDN or IP address of the server host, e.g. mydbserver.example.com or 172.20.240.163 . Port. The default MySQL server port is 3306 . If your server uses a different port, specify that port. User and Password. These are your database user name and password. 第一个按钮是：同步当前数据库连接。这个是最重要的操作，有一些情况下，当我们配置好连接之后
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