mysql学习1，mysql的关键字

最新推荐文章于 2024-12-08 09:14:57 发布

最新推荐文章于 2024-12-08 09:14:57 发布 · 160 阅读

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本文讲述了作者在使用MySQL过程中遇到的问题，特别是使用保留字作为字段名而导致的数据插入失败。文中列举了MySQL的所有保留字，并提醒读者在创建表时避免使用这些词汇。

近些日子开始重新学习了下mysql,主要学习mysql的各种命令。期间遇到了不少问题。最恼人的是无意中我用了一个mysql的保留字做字段，用的是describe，结果导致各种插不进数据。。。。我是无论如何没有想过这个单词是保留字。。。。。。。最后调半天，终于意识到它有可能是保留字，一查文档，果然是。。。。。坑爹啊，浪费了大把时间。。。mysql的保留字如下：

1.ACCESSIBLE ADD ALL ALTER ANALYZE AND AS ASC ASENSITIVE

2.BEFORE BETWEEN BIGINT BINARY BLOB BOTH BY

3.CALL CASCADE CASE CHANGE CHAR CHARACTER CHECK COLLATE COLUMN CONDITION CONSTRAINT CONTINUE CONVERT CREATE CROSS CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURRENT_USER CURSOR

4.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

5.EACH ELSE ELSEIF ENCLOSED ESCAPED EXISTS EXIT EXPLAIN

6.FALSE FETCH FLOAT FLOAT4 FLOAT8 FOR FORCE FOREIGN FROM FULLTEXT

7.GRANT GROUP

8.HAVING HIGH_PRIORITY HOUR_MICROSECOND HOUR_MINUTE HOUR_SECOND

9.IF IGNORE IN INDEX INFILE INNER INOUT INSENSITIVE INSERT INT INT1 INT2 INT3 INT4 INT8 INTEGER INTERVA L INTO IS ITERATE

10.JOIN

11.KEY KEYS KILL

12.LEADING LEAVE LEFT LIKE LIMIT LINEAR LINES LOAD LOCALTIME LOCALTIMESTAMP LOCK

LONG LONGBLOB LONGTEXT LOOP LOW_PRIORITY

13.MASTER_SSL_VERIFY_SERVER_CERT MATCH MEDIUMBLOB MEDIUMINT MEDIUMTEXT MIDDLEINT MINUTE_MICROSECOND MINUTE_SECOND MOD MODIFIES

14.NATURAL NOT NO_WRITE_TO_BINLOG NULL NUMERIC

15.ON OPTIMIZE OPTION OPTIONALLY OR ORDER OUT OUTER OUTFILE

16.PRECISION PRIMARY PROCEDURE PURGE

17.RANGE READ READS READ_WRITE REAL REFERENCES REGEXP RELEASE RENAME REPEAT REPLACE REQUIRE RESTRICT RETURN REVOKE RIGHT RLIKE

18.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

19.TABLE TERMINATED THEN TINYBLOB TINYINT TINYTEXT TO TRAILING TRIGGER TRUE

20.UNDO UNION UNIQUE UNLOCK UNSIGNED UPDATE USAGE USE USING UTC_DATE UTC_TIME UTC_TIMESTAMP

21.VALUES VARBINARY VARCHAR VARCHARACTER VARYING

22.WHEN WHERE WHILE WITH WRITE

23.XOR

24.YEAR_MONTH

25.ZEROFILL

这些保留字均不能用于列名和表名。

另外，创建表时，varchar必须显示指定长度（在命令行下）。