You have an error in your SQL syntax; check the manual that corresponds to your MySQL server versio····这句话对于咱们并不陌生，无非就是多了“，”之类的问题。但是你如果无意之中添加了一个mysql中的保留字段作为数据库中存贮的字段名，悲剧就这样发生了。
前几天因为功能的临时变更，需要给数据表添加一个字段用来区别导入的批次，我就在mysql中添加了group字段，没想到我的噩梦就此展开·····
本来程序已经接近收尾，本想着今早来公司给程序来个欢乐的结尾，没想到····每次导入excel表总是提示我sql语句错误，我变在sql语句上添添减减，也没有把错误搞定，整整一个上午外加下午两个小时，简直已经到了抓狂的程度。简直要跪地苦思冥想，但是还是没有搞定这个错误。
把问题放在一边，继续搞其他的东西····当在写一个group by 语句时，突然意识到，group 是mysql的一个保留字，就此问题迎刃而解。切记切记，多么痛的领悟啊
mysql的保留字段
在MySQL中，下表中的字显式被保留。其中大多数字进制被标准SQL用作列名和/或表名(例如，GROUP)。少数被保留了，因为MySQL需要它们，在MySQL中，当表名或字段名乃至数据库名和保留字冲突时，在sql语句里可以用撇号（）括起来,当让我们一般都尽量少使用这些保留的字段。
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ADD |
ALL |
ALTER |
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ANALYZE |
AND |
AS |
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ASC |
ASENSITIVE |
BEFORE |
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BETWEEN |
BIGINT |
BINARY |
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BLOB |
BOTH |
BY |
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CALL |
CASCADE |
CASE |
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CHANGE |
CHAR |
CHARACTER |
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CHECK |
COLLATE |
COLUMN |
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CONDITION |
CONNECTION |
CONSTRAINT |
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CONTINUE |
CONVERT |
CREATE |
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CROSS |
CURRENT_DATE |
CURRENT_TIME |
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CURRENT_TIMESTAMP |
CURRENT_USER |
CURSOR |
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DATABASE |
DATABASES |
DAY_HOUR |
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DAY_MICROSECOND |
DAY_MINUTE |
DAY_SECOND |
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DEC |
DECIMAL |
DECLARE |
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DEFAULT |
DELAYED |
DELETE |
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DESC |
DESCRIBE |
DETERMINISTIC |
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DISTINCT |
DISTINCTROW |
DIV |
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DOUBLE |
DROP |
DUAL |
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EACH |
ELSE |
ELSEIF |
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ENCLOSED |
ESCAPED |
EXISTS |
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EXIT |
EXPLAIN |
FALSE |
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FETCH |
FLOAT |
FLOAT4 |
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FLOAT8 |
FOR |
FORCE |
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FOREIGN |
FROM |
FULLTEXT |
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GOTO |
GRANT |
GROUP |
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HAVING |
HIGH_PRIORITY |
HOUR_MICROSECOND |
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HOUR_MINUTE |
HOUR_SECOND |
IF |
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IGNORE |
IN |
INDEX |
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INFILE |
INNER |
INOUT |
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INSENSITIVE |
INSERT |
INT |
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INT1 |
INT2 |
INT3 |
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INT4 |
INT8 |
INTEGER |
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INTERVAL |
INTO |
IS |
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ITERATE |
JOIN |
KEY |
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KEYS |
KILL |
LABEL |
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LEADING |
LEAVE |
LEFT |
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LIKE |
LIMIT |
LINEAR |
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LINES |
LOAD |
LOCALTIME |
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LOCALTIMESTAMP |
LOCK |
LONG |
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LONGBLOB |
LONGTEXT |
LOOP |
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LOW_PRIORITY |
MATCH |
MEDIUMBLOB |
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MEDIUMINT |
MEDIUMTEXT |
MIDDLEINT |
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MINUTE_MICROSECOND |
MINUTE_SECOND |
MOD |
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MODIFIES |
NATURAL |
NOT |
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NO_WRITE_TO_BINLOG |
NULL |
NUMERIC |
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ON |
OPTIMIZE |
OPTION |
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OPTIONALLY |
OR |
ORDER |
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OUT |
OUTER |
OUTFILE |
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PRECISION |
PRIMARY |
PROCEDURE |
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PURGE |
RAID0 |
RANGE |
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READ |
READS |
REAL |
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REFERENCES |
REGEXP |
RELEASE |
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RENAME |
REPEAT |
REPLACE |
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REQUIRE |
RESTRICT |
RETURN |
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REVOKE |
RIGHT |
RLIKE |
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SCHEMA |
SCHEMAS |
SECOND_MICROSECOND |
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SELECT |
SENSITIVE |
SEPARATOR |
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SET |
SHOW |
SMALLINT |
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SPATIAL |
SPECIFIC |
SQL |
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SQLEXCEPTION |
SQLSTATE |
SQLWARNING |
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SQL_BIG_RESULT |
SQL_CALC_FOUND_ROWS |
SQL_SMALL_RESULT |
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SSL |
STARTING |
STRAIGHT_JOIN |
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TABLE |
TERMINATED |
THEN |
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TINYBLOB |
TINYINT |
TINYTEXT |
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TO |
TRAILING |
TRIGGER |
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TRUE |
UNDO |
UNION |
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UNIQUE |
UNLOCK |
UNSIGNED |
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UPDATE |
USAGE |
USE |
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USING |
UTC_DATE |
UTC_TIME |
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UTC_TIMESTAMP |
VALUES |
VARBINARY |
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VARCHAR |
VARCHARACTER |
VARYING |
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WHEN |
WHERE |
WHILE |
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WITH |
WRITE |
X509 |
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XOR |
YEAR_MONTH |
ZEROFILL |
