mysql insert 空字符报错
mysql insert 空字符报错 double类型字段插入空字符串时自动转为0
这样写就会报错：
Data truncated for column 'x1' at row 1
这种应该是版本问题，尤其是虚拟主机。
把''改成null不会出错：
x1是double类型的数据。
INSERT INTO TEMPTABLE(x1,x2,x3,x4,x5,x6,x7,x8,x9,x10,x11,x12,x13,x14,x15,x16,x17,x18,x19,x20,x21,x22,x23,x24,x25,x26,x27,x28,x29,x30,x31,x32,x33,x34,x35,x36,x37,x38,x39,x40,x41,x42,x43,x44,x45,x46,x47,x48,x49,x50,x51,x52,x53,x54,x55,x56,x57,x58,x59,x60,x61,x62,x63,x64,x65,x66,x67,x68,x69,x70,x71,x72,x73,x74,x75,x76,x77,x78,x79,x80,x81,x82,x83,x84,x85,x86,x87,x88,x89,x90,x91,x92,x93,x94,x95,x96,x97,x98,x99,x100,x101,x102,x103,x104,x105,x106,x107,x108,x109,x110,x111,x112,x113,x114,x115,x116,x117,x118,x119,x120,x121,x122,x123,x124,x125,x126,x127,x128,x129,x130,x131,x132,x133) VALUES('0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0')
这种问题一般mysql 5.x上出现。我用的mysql5.2.28，后面查询得知新版本mysql对空值插入有"bug",要在安装mysql的时候去除默认勾选的enable strict SQL mode。如果已经安装好了的，就在my.ini中查找sql-mode，默认为sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"，将其修改为sql-mode="NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"，重启mysql后即可。
第一时间的反应是跟mysql5.0新加的sql-mode有关系,因为前一阵子刚刚看过手册.果然,作了如下更改后就不再提示了.
修改 my.ini 文件.
# Set the SQL mode to strict
sql-mode=”STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION”
改为:
# Set the SQL mode to strict
sql-mode=”NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION”