This article mainly introduces the Lua database operation library: LuaSQL . He is open-source and supports databases such as ODBC, ADO , Oracle , MySQL , SQLite , and PostgreSQL.
This article introduces to you MySQL the database connection.
LuaSQL use LuaRocks to install the databasedriver you need to install as needed.
LuaRocks installation method:
$ wget http://luarocks.org/releases/luarocks-2.2.1.tar.gz $ tar zxpf luarocks-2.2.1.tar.gz $ cd luarocks-2.2.1 $ ./configure; sudo make bootstrap $ sudo luarocks install luasocket $ lua Lua 5.3.0 Copyright (C) 1994-2015 Lua.org, PUC-Rio > require "socket" Install LuaRocks: keplerproject/luarocks under Window
Install different database drivers:
luarocks install luasql-sqlite3 luarocks install luasql-postgres luarocks install luasql-mysql luarocks install luasql-sqlite luarocks install luasql-odbc You can also use the source code installation method, Lua Github source address: keplerproject/luasql
Lua connection MySql database: 4.31.1. Example #
require "luasql.mysql" --Creating Environment Objects env = luasql.mysql() --Connect to database conn = env:connect("Database name, username, password, IP address, port) --Set the encoding format for the database conn:execute"SET NAMES UTF8" --Perform database operations cur = conn:execute("select * from role") row = cur:fetch({},"a") --Creating File Objects file = io.open("role.txt","w+"); while row do var = string.format("%d %s\\n", row.id, row.name) print(var) file:write(var) row = cur:fetch(row,"a") end file:close() --Close File Object conn:close() --Close database connection env:close() --Shutdown Database Environment