mysql odbc on linux
1. 源码文件
2. 编译及配置 unixodbc
2.1 编译
2.2 配置
2.3 测试
3. 安装mysql odbc
4. 测试程序
5. 参考
1. 源码文件
mysql-connector-odbc-5.3.13-linux-glibc2.12-x86-64bit.tar.gz (使用的)
mysql-connector-odbc-5.3.13-src.tar.gz (源代码)
将mysql-connector-odbc-5.3.13-linux-glibc2.12-x86-64bit.tar.gz 解压，对应文件夹 /home/wl/software/mysqlodbc5313
https://dev.mysql.com/downloads/connector/odbc/
unixODBC-2.3.7.tar.gz
http://www.unixodbc.org/
MyODBC体系结构建立在5个组件上，如下图所示：
Driver Manager:
负责管理应用程序和驱动程序间的通信, 主要功能包括: 解析DSN (数据源名称,ODBC的数据源名称在ODBC.INI文件中配置), 加载和卸载驱动程序,处理ODBC调用,将其传递给驱动程序.
Connector/ODBC(MyODBC驱动程序):
实现ODBC API所提供的功能, 它负责处理ODBC函数调用,将SQL请求提交给MySQL服务器，并将结果返回给应用程序.
ODBC.INI
ODBC.INI是ODBC配置文件，记录了连接到服务器所需的驱动信息和数据库信息。Driver Manager将使用它来确定加载哪个驱动程序（使用数据源名DSN）。驱动程序将根据指定的DSN来读取连接参数。
2. 编译及配置 unixodbc
2.1 编译
/home/wl/software/build/unixodbc
[wl@host122 unixodbc]$ cat run.sh
../../unixODBC-2.3.7/configure --prefix=/home/wl/install/unixodbc --includedir=/home/wl/install/unixodbc/include --libdir=/home/wl/install/unixodbc/lib -bindir=/home/wl/install/unixodbc/bin --sysconfdir=/home/wl/install/unixodbc/etc -bindir=/home/wl/install/unixodbc/bin
make
make install
2.2 配置
[wl@host122 etc]$ cat odbc.ini
[MySQL-test]
Description = MySQL test database
Trace = Off
TraceFile = stderr
Driver = MySQL
SERVER = 127.0.0.1
USER = root
PASSWORD = admin
PORT = 3306
DATABASE = db1
[wl@host122 etc]$ cat odbcinst.ini
[MYSQL]
Driver = /home/wl/software/mysqlodbc5313/lib/libmyodbc5w.so
SETUP = /home/wl/software/mysqlodbc5313/lib/libmyodbc5w.so
UsageCount = 1
（odbc 5.3及以上是libmyodbc5a.so和libmyodbc5w.so。其中c5a是Ansi版，c5w是Unicode版）
2.3 测试
将unixodbc相关信息添加到环境变量中
[wl@host122 etc]$ which odbcinst
~/install/unixodbc/bin/odbcinst
[wl@host122 etc]$ odbcinst -j
unixODBC 2.3.7
DRIVERS............: /home/wl/install/unixodbc/etc/odbcinst.ini
SYSTEM DATA SOURCES: /home/wl/install/unixodbc/etc/odbc.ini
FILE DATA SOURCES..: /home/wl/install/unixodbc/etc/ODBCDataSources
USER DATA SOURCES..: /home/wl/.odbc.ini
SQLULEN Size.......: 8
SQLLEN Size........: 8
SQLSETPOSIROW Size.: 8
[wl@host122 etc]$ isql mysql-test
+---------------------------------------+
| Connected! |
| |
| sql-statement |
| help [tablename] |
| quit |
| |
+---------------------------------------+
3. 安装mysql odbc
cd /home/wl/software/mysqlodbc5313/bin
./myodbc-installer -d -a -n "MYSQL" -t "DRIVER=/home/wl/software/mysqlodbc5313/lib/libmyodbc5w.so;SETUP=/home/wl/software/mysqlodbc5313/lib/libmyodbc5w.so"
4. 测试程序
[wl@host122 odbc]$ cat test1.c
#include
#include
#include
#include
int main()
{
SQLHENV serverhenv;
SQLHDBC serverhdbc;
SQLHSTMT serverhstmt;
SQLRETURN ret;
SQLINTEGER col1, col2;
SQLLEN length;
//分配环境句柄
ret = SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&serverhenv);
if(!SQL_SUCCEEDED(ret))
{
fprintf(stderr, "SQLAllocHandle error!\n");
return 1;
}
//设置环境属性
ret = SQLSetEnvAttr(serverhenv,SQL_ATTR_ODBC_VERSION,(void*)SQL_OV_ODBC3,0);
if(!SQL_SUCCEEDED(ret))
{
fprintf(stderr, "SQLSetEnvAttr error!\n");
return 1;
}
//分配连接句柄
ret = SQLAllocHandle(SQL_HANDLE_DBC,serverhenv,&serverhdbc);
if(!SQL_SUCCEEDED(ret))
{
fprintf(stderr, "SQLSetEnvAttr error!\n");
return 1;
}
//数据库连接
ret = SQLConnect(serverhdbc,(SQLCHAR*)"mysql-test",SQL_NTS,(SQLCHAR*)"root",SQL_NTS,(SQLCHAR*)"admin",SQL_NTS);
if(!SQL_SUCCEEDED(ret))
{
fprintf(stderr, "SQL_Connect error!\n");
return 1;
}
//分配执行语句句柄
ret = SQLAllocHandle(SQL_HANDLE_STMT,serverhdbc,&serverhstmt);
//执行SQL语句
ret=SQLExecDirect(serverhstmt,(SQLCHAR*)"select * from test1",SQL_NTS);
if(ret == SQL_SUCCESS || ret == SQL_SUCCESS_WITH_INFO){
//绑定数据
SQLBindCol(serverhstmt,1, SQL_C_LONG, &col1, sizeof(col1), &length);
SQLBindCol(serverhstmt,2, SQL_C_LONG, &col2, sizeof(col1), &length);
while(SQL_NO_DATA != SQLFetch(serverhstmt))
{
fprintf(stdout, "result: %d, %d\n", col1, col2);
}
}
//释放语句句柄
ret=SQLFreeHandle(SQL_HANDLE_STMT,serverhstmt);
if(SQL_SUCCESS!=ret && SQL_SUCCESS_WITH_INFO != ret)
fprintf(stderr, "free hstmt error!\n");
//断开数据库连接
ret=SQLDisconnect(serverhdbc);
if(SQL_SUCCESS!=ret&&SQL_SUCCESS_WITH_INFO!=ret)
fprintf(stderr, "disconnected error!\n");
//释放连接句柄
ret=SQLFreeHandle(SQL_HANDLE_DBC,serverhdbc);
if(SQL_SUCCESS!=ret&&SQL_SUCCESS_WITH_INFO!=ret)
fprintf(stderr, "free hdbc error!\n");
//释放环境句柄句柄
ret=SQLFreeHandle(SQL_HANDLE_ENV,serverhenv);
if(SQL_SUCCESS!=ret&&SQL_SUCCESS_WITH_INFO!=ret)
fprintf(stderr, "free henv error!\n");
}
编译：
gcc -g -o test1 test1.c -L ~/install/unixodbc/lib/ -lodbc -I ~/install/unixodbc/include/
5. 参考
https://blog.csdn.net/sunny_ss12/article/details/53170716
https://blog.csdn.net/u010587433/article/details/46799037
https://docs.microsoft.com/en-us/sql/odbc/reference/syntax/sqlbindcol-function?view=sql-server-2017
https://www.csdn.net/gather_29/Mtzagg1sMzktYmxvZwO0O0OO0O0O.html
https://dev.mysql.com/doc/connector-odbc/en/connector-odbc-configuration-connection-without-dsn.html
(connect without dns)