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mysql存储过程tips

示例:
create procedure proc_name (in parameter integer)
begin
declare variable varchar(20);
if parameter=1 then
set variable='MySQL';
else
set variable='PHP';
end if;
insert into tb (name) values (variable);
end; 
MySQL扩展也是支持存储过程的,不过只支持无返回结果的存储过程
可以使用mysqli来代替


相关文档:

SQL Server、Oracle和MySQL中查出值为NULL的替换

SOURCE: CLICK HERE
本文讲述SQL Server、Oracle、MySQL查出值为NULL的替换。
在SQL Server Oracle MySQL当数据库中查出某值为NULL怎么办?
1、MSSQL: ISNULL()
语法
ISNULL ( check_expression , replacement_value )
参数
check_expression
将被检查是否为 NULL的表达式。check_expression 可以是任何类型的。
re ......

java读取mysql数据库latin1避免乱码方法

写入时,先做encode:
public static String encode(String src) {
String result = null;
try {
result = new String(src.getBytes("gbk"), "ISO-8859-1");
} catch (UnsupportedEncodingException uee) {
System.err.println(uee);
}
return result;
}
读出时,再做decode:
public static String deco ......

Now it's MySQL's turn...

Some problems encounted this afternoon, when trying to setup/test mysql capabilities on hypnos and virgil.
1.ERROR 2003 (HY000): Can't connect to MySQL server on 'server-name' (111)
access locally (i.e. from localhost) is fine, when trying remotely got this error. when tried with mysql++ library, ......

mysql调用后

用mysql_query,mysql_fetch_array()后应该要
free_result().function count_admin($where = '')
{
if($where) $where = " WHERE $where";
$result = $this->db->get_one("SELECT count(*) as num from $this->table_admin_role $where");
return $result['num'];
} ......
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