win 需要先安装luaforwindows
linux 需要安装 luarocks 并 luarocks install luasql-mysql
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require "luasql.mysql" --创建环境对象 env=luasql.mysql() --连接数据库 conn=env:connect( "数据库名" , "用户名" , "密码" , "IP地址" ,端口) --设置数据库的编码格式 conn:execute "SET NAMES GB2312" --执行数据库操作 cur=conn:execute( "select * from role" ) row=cur:fetch({}, "a" ) while row do var=string.format( "%d%s\n" ,row.id,row.name) print(var) row=cur:fetch(row, "a" ) end conn:close()--关闭数据库连接 env:close()--关闭数据库环境 |
上面是个简单的,我们再来看个稍微复杂些的例子
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-- load driver require "luasql.mysql" -- create environment object env = assert (luasql.mysql()) -- connect to data source con = assert (env:connect( "database" , "usr" , "password" , "192.168.xx.xxx" , 3306)) -- reset our table res = con:execute "DROP TABLE people" --建立新表people res = assert (con:execute[[ CREATE TABLE people( name varchar(50), email varchar(50) ) ]]) -- add a few elements list = { { name= "Jose das Couves" , email= "jose@couves.com" , }, { name= "Manoel Joaquim" , email= "manoel.joaquim@cafundo.com" , }, { name= "Maria das Dores" , email= "maria@dores.com" , }, } for i, p in pairs (list) do --加入数据到people表 res = assert (con:execute(string.format([[ INSERT INTO people VALUES ( '%s' , '%s' )]], p.name, p.email) )) end -- retrieve a cursor cur = assert (con:execute "SELECT name, email from people" ) --获取数据 -- print all rows row = cur:fetch ({}, "a" ) -- the rows will be indexed by field names --显示出来 while row do print(string.format( "Name: %s, E-mail: %s" , row.name, row.email)) row = cur:fetch (row, "a" ) -- reusing the table of results end -- close everything cur:close() con:close() env:close() |