You have an error in your SQL syntax; check the manual that corresponds to your MySQL server versio····這句話對於咱們並不陌生，無非就是多了“，”之類的問題。但是你如果無意之中添加了一個mysql中的保留字段作為數據庫中存貯的字段名，悲劇就這樣發生了。
前幾天因為功能的臨時變更，需要給數據表添加一個字段用來區別導入的批次，我就在mysql中添加了group字段，沒想到我的噩夢就此展開·····
本來程序已經接近收尾，本想著今早來公司給程序來個歡樂的結尾，沒想到····每次導入excel表總是提示我sql語句錯誤，我變在sql語句上添添減減，也沒有把錯誤搞定，整整一個上午外加下午兩個小時，簡直已經到了抓狂的程度。簡直要跪地苦思冥想，但是還是沒有搞定這個錯誤。
把問題放在一邊，繼續搞其他的東西····當在寫一個group by 語句時，突然意識到，group 是mysql的一個保留字，就此問題迎刃而解。切記切記，多麼痛的領悟啊
mysql的保留字段
在MySQL中，下表中的字顯式被保留。其中大多數字進制被標准SQL用作列名和/或表名(例如，GROUP)。少數被保留了，因為MySQL需要它們，在MySQL中，當表名或字段名乃至數據庫名和保留字沖突時，在sql語句裡可以用撇號（）括起來,當讓我們一般都盡量少使用這些保留的字段。
ADD ALL ALTER ANALYZE AND AS ASC ASENSITIVE BEFORE BETWEEN BIGINT BINARY BLOB BOTH BY CALL CASCADE CASE CHANGE CHAR CHARACTER CHECK COLLATE COLUMN CONDITION CONNECTION CONSTRAINT CONTINUE CONVERT CREATE CROSS CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER CURSOR DATABASE DATABASES DAY_HOUR DAY_MICROSECOND DAY_MINUTE DAY_SECOND DEC DECIMAL DECLARE DEFAULT DELAYED DELETE DESC DESCRIBE DETERMINISTIC DISTINCT DISTINCTROW DIV DOUBLE DROP DUAL EACH ELSE ELSEIF ENCLOSED ESCAPED EXISTS EXIT EXPLAIN FALSE FETCH FLOAT FLOAT4 FLOAT8 FOR FORCE FOREIGN FROM FULLTEXT GOTO GRANT GROUP HAVING HIGH_PRIORITY HOUR_MICROSECOND HOUR_MINUTE HOUR_SECOND IF IGNORE IN INDEX INFILE INNER INOUT INSENSITIVE INSERT INT INT1 INT2 INT3 INT4 INT8 INTEGER INTERVAL INTO IS ITERATE JOIN KEY KEYS KILL LABEL LEADING LEAVE LEFT LIKE LIMIT LINEAR LINES LOAD LOCALTIME LOCALTIMESTAMP LOCK LONG LONGBLOB LONGTEXT LOOP LOW_PRIORITY MATCH MEDIUMBLOB MEDIUMINT MEDIUMTEXT MIDDLEINT MINUTE_MICROSECOND MINUTE_SECOND MOD MODIFIES NATURAL NOT NO_WRITE_TO_BINLOG NULL NUMERIC ON OPTIMIZE OPTION OPTIONALLY OR ORDER OUT OUTER OUTFILE PRECISION PRIMARY PROCEDURE PURGE RAID0 RANGE READ READS REAL REFERENCES REGEXP RELEASE RENAME REPEAT REPLACE REQUIRE RESTRICT RETURN REVOKE RIGHT RLIKE SCHEMA SCHEMAS SECOND_MICROSECOND SELECT SENSITIVE SEPARATOR SET SHOW SMALLINT SPATIAL SPECIFIC SQL SQLEXCEPTION SQLSTATE SQLWARNING SQL_BIG_RESULT SQL_CALC_FOUND_ROWS SQL_SMALL_RESULT SSL STARTING STRAIGHT_JOIN TABLE TERMINATED THEN TINYBLOB TINYINT TINYTEXT TO TRAILING TRIGGER TRUE UNDO UNION UNIQUE UNLOCK UNSIGNED UPDATE USAGE USE USING UTC_DATE UTC_TIME UTC_TIMESTAMP VALUES VARBINARY VARCHAR VARCHARACTER VARYING WHEN WHERE WHILE WITH WRITE X509 XOR YEAR_MONTH ZEROFILL
