Interbase/Firebird的SQL语法(收藏)

最近在群里大家突然讨论下fb(firebird)来了，呵，看了一些资料，突然发觉这个东西也蛮好玩的，于是开始大量的查找有关的资料，下面是一
些fb下的sql写法，转自网上，各位朋友将就些看看吧，过几天偶整理好.net下使用fb的demo上来给大家看看吧，到时支持支持吧，呵呵

一、分页写法小例：

SELECT FIRST
10 templateid,code,name FROM
template ;

SELECT FIRST
10 SKIP
10 templateid,code,name FROM
template ;

SELECT
* FROM
shop ROWS
1 TO
10; --firebird2.0支持这种写法

二、显示表名和表结构

　　SHOW TABLES
;

SHOW TABLE
tablename;

三、使用ISQL连接数据库

firebird%92bin>isql -u sysdba -p masterkey

SQL>CONNECT
'E:companyxmwsoftnewxmwsoftc2dbcts2.fdb';

或

SQL>CONNECT
'E:%92'

CON>USER
'sysdba'

CONT>PASSWORD
'masterkey';

四、更新字段注释

UPDATE
RDB$RELATION_FIELDS

SET
RDB$DESCRIPTION
= '描述信息'

WHERE
(RDB$RELATION_NAME
= 'SHOP')

AND
(RDB$FIELD_NAME
= 'CREDIT_BUY')

五、显示字段注释

SELECT
RDB$FIELD_NAME
,RDB$DESCRIPTION

FROM
RDB$RELATION_FIELDS

WHERE
(RDB$RELATION_NAME
= 'SHOP')

AND
(DB$FIELD_NAME
= 'CREDIT_BUY')

六、更新表注释

UPDATE
RDB$RELATIONS

SET
RDB$DESCRIPTION
= '描述信息'

WHERE
RDB$RELATION_NAME
= 'TABLE_NAME';

七、查询所有的表和视图（包括系统表和系统视图）

SELECT
RDB$RELATION_NAME

FROM
RDB$RELATIONS
;

八、查询所有的用户表和用户视图

SELECT
RDB$RELATION_NAME

FROM
RDB$RELATIONS

WHERE
RDB$SYSTEM_FLAG
= 0;

九、查询所有的用户表

SELECT
RDB$RELATION_NAME

FROM
RDB$RELATIONS

WHERE
RDB$SYSTEM_FLAG
= 0

AND
RDB$VIEW_BLR
IS
NULL
;

十、查所有用户表、用户视图所有字段及相关定义

SELECT

a.RDB$RELATION_NAME
,

b.RDB$FIELD_NAME
,

b.RDB$FIELD_ID
,

d.RDB$TYPE_NAME
,

c.RDB$FIELD_LENGTH
,

c.RDB$FIELD_SCALE

FROM
RDB$RELATIONS
a

INNER JOIN
RDB$RELATION_FIELDS
b

ON
a.RDB$RELATION_NAME
= b.RDB$RELATION_NAME

INNER JOIN
RDB$FIELDS
c

ON
b.RDB$FIELD_SOURCE
= c.RDB$FIELD_NAME

INNER JOIN
RDB$TYPES
d

ON
c.RDB$FIELD_TYPE
= d.RDB$TYPE

WHERE
a.RDB$SYSTEM_FLAG
= 0

AND
d.RDB$FIELD_NAME
= 'RDB$FIELD_TYPE'

ORDER BY
a.RDB$RELATION_NAME
, b.RDB$FIELD_ID
;

十一、查找某表的所有字段及相关定义

SELECT


A.RDB$FIELD_NAME
,

B.RDB$FIELD_TYPE
,

B.RDB$FIELD_LENGTH
,

B.RDB$FIELD_PRECISION
,

B.RDB$FIELD_SCALE

FROM
RDB$RELATION_FIELDS
A, RDB$FIELDS
B

WHERE
A.RDB$RELATION_NAME
= 'tablename'

AND
A.RDB$FIELD_SOURCE
= B.RDB$FIELD_NAME

ORDER BY
A.RDB$FIELD_POSITION
;

十二、查找某表的主键定义字段

SELECT
A.RDB$FIELD_NAME

FROM
RDB$INDEX_SEGMENTS
A, RDB$RELATION_CONSTRAINTS
B

WHERE
B.RDB$CONSTRAINT_TYPE
= 'PRIMARY KEY'

AND
B.RDB$RELATION_NAME
= 'tablename'

AND
A.RDB$INDEX_NAME
= B.RDB$INDEX_NAME

ORDER BY
A.RDB$FIELD_POSITION
;

十三、查找某表的外键定义

SELECT

r1.RDB$CONSTRAINT_NAME
,

rind.RDB$FIELD_NAME
,

r2.RDB$RELATION_NAME

FROM

RDB$RELATION_CONSTRAINTS
r1,

RDB$RELATION_CONSTRAINTS
r2,

RDB$REF_CONSTRAINTS
ref,

RDB$INDEX_SEGMENTS
rind

WHERE
r1.RDB$RELATION_NAME
= 'tablename'

AND
r1.RDB$CONSTRAINT_TYPE
= 'FOREIGN KEY'

AND
r1.RDB$CONSTRAINT_NAME
= ref.RDB$CONSTRAINT_NAME

AND
ref.RDB$CONST_NAME_UQ
= r2.RDB$CONSTRAINT_NAME

AND
r1.RDB$INDEX_NAME
= rind.RDB$INDEX_NAME
;