MySQLÊý¾ÝÏÔʾ²»È«µÄÎÊÌâ
Ê×ÏÈ£¬¸ø´ó¼Ò¿´Ò»ÏÂÎÒ½¨Á¢µÄ±íÐÅÏ¢
È»ºó£¬ÎÒ²åÈëÁËÎåÌõÊý¾Ý£¬ÎªÊ²Ã´Ç°ËÄÌõѧºÅ¶¼ÊDz¿·ÖÏÔʾ£¨Ö»ÏÔʾ×îºóÁ½Î»£©£¬´ÓµÚÎåÌõ²ÅÍêÈ«ÏÔʾ£¬ÈçÏÂͼ:
ÎÒÖ»²éѯѧºÅsnoµÄʱºòÎåÌõÐÅÏ¢¶¼ÊÇÈ«²¿ÏÔʾµÄ£¬ÈçÏÂͼ£º
ÕâÊÇΪʲô°¡£¿Çë½Ì¸ßÊÖÖ¸µã
Èç¹û£¬´ó¼Ò¿´²»µ½Í¼£¬¾Í¿´ÏÂÃæµÄÎı¾°É£¬Ð»Ð»Ò»Â¥µÄÌáÐÑ£¬ºÇºÇ
ͼһ
SQL code:
mysql> desc student;
+-----------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-----------+-------------+------+-----+---------+-------+
| sno | varchar(20) | NO | PRI | NULL | |
| spassword | varchar(20) | NO | | NULL | |
| sname | varchar(20) | NO | | NULL | |
| ssex | varchar(10) | NO | | NULL | |
| ruxue | date | NO | | NULL | |
| class_no | varchar(20) | NO | | NULL | |
| role_no | varchar(20) | NO | | NULL | |
+-----------+-------------+------+-----+---------+-------+
7 rows in set (0.00 sec)
ͼ¶þSQL code:
mysql> select * from student;
+----------+-----------+-------+------+------------+----------+---------+
| sno | spassword | sname | s
Ïà¹ØÎÊ´ð£º
±àÒëÆ÷£ºC-Free4
mysql µ¥¶À°²×°µÄ£¬ÏÖÔÚΪapache+php+mysql¿ÉÒÔʹÓá£
×î½üÔÚÁ·Ï°c£¬c++£»ÏëÓÃc£¬c++Á¬½ÓÏÂÎÒµÄmysql£¬ºÃ¶àµØ·½¶à˵mysql.hÕÒ²»µ½¡£¶øÇÒÎÒmysqlûÓÐËùνµÄincludeÎļþ¼Ð°¡¡£
Íü¸ßÊÖÖ¸µãÒ»¶ ......
ÎÒÊÇÓÃmysql×Ô´øµÄC API
if(mysql_real_connect(&mysql,"125.0.0.108","root","root","home",3306,NULL,0))
{
AfxMessageBox("Êý¾Ý¿âÁ¬½Óʧ°Ü") ......
ÔÚ°²×°Java±àÒëÆ÷µÄEclipseµÄʱºò£¬¶Ô»·¾³±äÁ¿½øÐÐÁËÅäÖã¬ÔÚ°²×°MySQlµÄʱºòÒ²Òª¶Ô»·¾³±äÁ¿½øÐÐÅäÖã»ÄÇôºóÃæµÄÅäÖûáÓ°ÏìÇ°ÃæµÄEclipseµÄÅäÖÃÂð£¿
Çë´ó¼Ò¶àÖ¸½Ì~£¡Ð»Ð»£¡
²»»á°Ñ£¬ÎÒÕâ¶¼×°Á赀 ÎÒϵͳÀï »¹×°ÁË ......
ÎÒ¶ÔSQL SERVERºÍACCESS±È½ÏÊ죬ËùÒÔÊý¾Ý¿âµÄͨÓûù´¡¶«Î÷¿ÉÒÔ˵¶¼ÕÆÎյIJ¶àÁË£¬ÎÒÏÖÔÚÏëÒªµÄ¾ÍÊÇÒÔÉÏÁ½Êý¾Ý¿âµÄ¶ÀÌØÖ®´¦µÄ½éÉܺÍÓ¦ÓýéÉÜ¡£
ÁíÍâÊé×îºÃ¶ÔÓ¦×îа汾 oracleÊÇ11g°É 10µÄÒ²ÐУ»mysqlÊÇ5.1°É
л ......
Çë¸ßÊÖÖ¸µã,ÎÒ¶ÔÒ»Õűí²éѯºóÔÙ¸üÐÂ,²éѯÊÇ×Ó²éѯ,±¨´í:
You can't specify target table 'a_table' for update in from clause
ÍêÕûSQLÓï¾äÊÇ
UPDATE a_table SET STATUS=0 WHERE ID=(SELECT MIN(ID) from a_tab ......