本人数据库新手，在创建表时出现问题，最后经查证，找出问题所在。下面的程序是部分节选，在创建数据库表的时候，起先使用的L24的CreateDB,经测试，一直输出 Create testResult Fail，

query->isActive()也为false,这就说明问题出在createDB上，也就是说这个QString应该是不符合要求才出错的。后来逐个测试，最后发现是

check varchar(100)的原因，经查看check是数据库关键字。

1 //创建数据库文件路径

2 testResultPath = APPDIR + "/TestReport/";3 QDir my_dir(testResultPath);4 if (!my_dir.exists())5 my_dir.mkpath(testResultPath);6 testResultPath += "testResult.db";7

8 //创建数据库

9 QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");10 //db.setHostName("easybook-3313b0");//可以省略

11 db.setDatabaseName(testResultPath);12 //db.setUserName("CETG54th");//设置数据库用户名，可以省略13 //db.setPassword("123456");//设置数据库密码，可以省略

14 db.open();15 if (!db.isOpen())16 {17 qDebug() << "db is not open";18 return;19 }20

21

22 //创建数据库表

23 QSqlQuery *query = new QSqlQuery("", db);24 //const QString createDB = "create table testResult(id int primary key,testDevice varchar(100),project varchar(100),exc varchar(100),display varchar(100),result varchar(100),time varchar(100),check varchar(100))";//fail

25

26 const QString createDB = "create table testResult(id int primary key,testDevice varchar(100),project varchar(100),exc varchar(100),display varchar(100),result varchar(100),time varchar(100),viewInfo varchar(100))"; //success

27

28 if (query->exec(createDB))29 qDebug() << "Create testResult Successful";30 else

31 qDebug() << "Create testResult Fail";32

33 qDebug() << query->isActive();

下面罗列了数据库关键字

A

ABSOLUTE ACTION ADD ADMINDB

ALL ALLOCATE ALPHANUMERIC ALTER

AND ANY ARE AS

ASC ASSERTION AT AUTHORIZATION

AUTOINCREMENT AVG

B

BAND BEGIN BETWEEN BINARY

BIT BIT_LENGTH BNOT BOR

BOTH BXOR BY BYTE

C

CASCADE CASCADED CASE CAST

CATALOG CHAR CHARACTER CHAR_LENGTH

CHARACTER_LENGTH CHECK CLOSE COALESCE

COLLATE COLLATION COLUMN COMMIT

COMP COMPRESSION CONNECT CONNECTION

CONSTRAINT CONSTRAINTS CONTAINER CONTINUE

CONVERT CORRESPONDING COUNT COUNTER

CREATE CREATEDB CROSS CURRENCY

CURRENT CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP

CURRENT_USER CURSOR

D

DATABASE DATE DATETIME DAY

DEALLOCATE DEC DECIMAL DECLARE

DEFAULT DEFERRABLE DEFERRED DELETE

DESC DESCRIBE DESCRIPTOR DIAGNOSTICS

DISALLOW DISCONNECT DISTINCT DOMAIN

DOUBLE DROP

E

ELSE END END-EXEC ESCAPE

EXCEPT EXCEPTION EXCLUSIVECONNECT EXEC

EXECUTE EXISTS EXTERNAL EXTRACT

F

FALSE FETCH FIRST FLOAT

FLOAT4 FLOAT8 FOR FOREIGN

FOUND FROM FULL

G

GENERAL GET GLOBAL GO

GOTO GRANT GROUP GUID

H

HAVING HOUR

I

IDENTITY IEEEDOUBLE IEEESINGLE IGNORE

IMAGE IMMEDIATE IN INDEX

INDICATOR INHERITABLE INITIALLY INNER

INPUT INSENSITIVE INSERT INT

INTEGER INTEGER1 INTEGER2 INTEGER4

INTERSECT INTERVAL INTO IS

ISOLATION

J

JOIN

K

KEY

L

LANGUAGE LAST LEADING LEFT

LEVEL LIKE LOCAL LOGICAL

LOGICAL1 LONG LONGBINARY LONGCHAR

LONGTEXT LOWER

M

MATCH MAX MEMO MIN

MINUTE MODULE MONEY MONTH

N

NAMES NATIONAL NATURAL NCHAR

NEXT NO NOT NOTE

NULL NULLIF NUMBER NUMERIC

O

OBJECT OCTET_LENGTH OF OLEOBJECT

ON ONLY OPEN OPTION

OR ORDER OUTER OUTPUT

OVERLAPS OWNERACCESS

P

PAD PARAMETERS PARTIAL PASSWORD

PERCENT PIVOT POSITION PRECISION

PREPARE PRESERVE PRIMARY PRIOR

PRIVILEGES PROC PROCEDURE PUBLIC

Q

R

READ REAL REFERENCES RELATIVE

RESTRICT REVOKE RIGHT ROLLBACK

ROWS

S

SCHEMA SCROLL SECOND SECTION

SELECT SELECTSCHEMA SELECTSECURITY SESSION

SESSION_USER SET SHORT SINGLE

SIZE SMALLINT SOME SPACE

SQL SQLCODE SQLERROR SQLSTATE

STRING SUBSTRING SUM SYSTEM_USER

T

TABLE TABLEID TEMPORARY TEXT

THEN TIME TIMESTAMP TIMEZONE_HOUR

TIMEZONE_MINUTE TO TOP TRAILING

TRANSACTION TRANSFORM TRANSLATE TRANSLATION

TRIM TRUE

U

UNION UNIQUE UNIQUEIDENTIFIER UNKNOWN

UPDATE UPDATEIDENTITY UPDATEOWNER UPDATESECURITY

UPPER USAGE USER USING

V

VALUE VALUES VARBINARY VARCHAR

VARYING VIEW

W

WHEN WHENEVER WHERE WITH

WORK WRITE

X

Y

YEAR YESNO

Z

ZONE

上面的关键字主要转自http://zhidao.baidu.com/link?url=RmJBWdmrnxciebfhmXsiJF3bZzgb1Yw0ywkhugHxcyBLKMixClmJl8pulL-m7sasPaAoUgzPqYFlGyPH5gQ36TJOsn7j_iGHDLAbXbfQrJe

另外如果使用数据库出现的问题非上述问题，则推荐博客http://www.cnblogs.com/findumars/p/4207133.html，希望有帮助。