mysql保留关键字导致语句执行失败

    如果有相同类型的两个字段,使用同样的sql语句,但是其中一个可以执行成功,另一个却怎么都执行失败,那么你或许是误用了mysql保留的关键字了。


图1

首先看一下图1,是我使用的数据表的结构(别人的)。其中inter和condition都是int类型的字段。

然而,


图2

如图2所示,用mysql标准语句(update tb_user set condition=1 where id= 123)更改数据时,报错了。

而,


图3

如图3所示,同样用mysql

标准语句(update tb_user set inter=1 where id= 123)更改数据时,没有任何问题。

总结原因:

condition是mysql的保留关键字,但设置字段时并不会报错,在操作数据表时会报错,所以设置mysql字段名时应当避免使用保留关键字。

附录(mysql保留关键字)

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






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转载自blog.csdn.net/travel_capsule/article/details/80394804