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走，是一輩子，不走，也是一輩子（程序猿之路）

Navicat連接mysql出現2003——can't connect to mysql server on localhost(10061)

mysql 數據庫導入導出方法總結（是時候總結）

1：起因

最近工作需求 ---- 實時統計一份數據，insert到mysql數據庫中；?

方法：很自然的就想到了python插入數據庫，yum install MySQL-python.x86_64à import MySQLdb(python2.X僅僅適用)

報錯如下

" File"/usr/lib/pymodules/python2.6/MySQLdb/cursors.py", line 151, inexecute query = query % db.literal(args)

TypeError: %d format: a number is required, not str"

解決方案：The?format string is?not really a normal Python?format string. Youmust always?use?%s?for all fields.?也就是MySQLdb的字符串格式化不是標準的python的字符串格式化,應當一直使用%s用于字符串格式化

2，具體細節

（1）MySQLdb python包安裝：

[@10.134.105.160 auto_tarh]#yum list | grep -i sql?? ----
MySQL-python.x86_64??????????????? ??????1.2.3-0.3.c1.1.el6?? @rhel-6.stable-rhel-x86_64-server-6??

-----yum install MySQL-python.x86_64 --> import MySQLdb(python2.X僅僅適用)

(2) mysql數據庫安裝

[@10.134.105.160 auto_tarh]#yum list installed | grep sql? ??---- 檢查安裝列表

mysql.x86_64?????????????????? 5.1.61-1.el6_2.1??????? @rhel-6.2-rhel-x86_64-server-6??? ----- mysql –h192.168.0.1 –uusername -ppassword

mysql-devel.x86_64???????????? 5.1.61-1.el6_2.1??????? @rhel-6.2-rhel-x86_64-server-6

mysql-libs.x86_64????????????? 5.1.61-1.el6_2.1??????? @rhel-x86_64-server-6/6.2

php-mysql.x86_64?????????????? 5.3.3-3.el6_2.8???????? @rhel-6.2-rhel-x86_64-server-6

----- yum installmysql.x86_64, 安裝mysql命令

3，開始書寫代碼

（1）python insert代碼

cursor.execute("""insert into tree (id,parent_id,level,description,code,start,end)values (%d,%d,%d,%s,%s,%f,%f)""", (1,1,1,'abc','def',1,1)) （2）The structure of my MYSQL table is: id int(255), parent_id int(255), level int(11), description varchar(255), code varchar(255), start decimal(25,4), end decimal(25,4)

（3）遇到的錯誤：

" File"/usr/lib/pymodules/python2.6/MySQLdb/cursors.py", line 151, inexecute query = query % db.literal(args)

TypeError: %d format: a number is required, not str"

解決方案:The?format string is?not really a normal Python?format string. Youmust always?use?%s?for all fields.?也就是MySQLdb的字符串格式化不是標準的python的字符串格式化,

應當一直使用%s用于字符串格式化

（4）同時還遇到一個奇葩的錯誤：

_mysql_exceptions.ProgrammingError: (1064, "You havean error in your SQ L syntax; check the manual that

corresponds to your MySQLserver version for the right syntax to use near ')' at line 1")

1 #coding=utf-82 3 import sys4 import traceback 5 import MySQLdb 6 7 conn= MySQLdb.connect(8 host='res.searchapp.rds.sogou',9 port = 3306,10 user='searchapp',11 passwd='searchappres',12 db ='searchapp',13 )14 cur = conn.cursor()15 def test():16 #插入一條數據17 #sqli="""insert into novel_card values('test3', 100, 1, 0.01, '20170707')"""18 #sqli="""insert into novel_card values('%s', %d, 1, 0.01, '20170707')"""19 20 #cur.execute(sqli)21 #sqli="""insert into novel_card values('%s', '%s', '%s', '%s', '%s')"""22 #sqli="""insert into novel_card (runoob_author, show, click, ctr, data_time) values('%s', %s, %s, %s, '%s')"""23 sqli="insert into novel_card values(%s, %s, %s, %s, %s)"24 print sqli %('t4','1','2','0.1','20170707')25 cur.execute(sqli, ('t5','1','2','0.1','20170707'))26 #cur.execute(sqli,('test5', '100', '1', '0.01', '20170707'))27 #sqli="insert into novel_card values('%s','%s')"28 #cur.execute(sqli,('test3', '20170707')) ?48 test()49 cur.close()50 conn.commit()51 conn.close()

總結

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