1.判断表名是否存在:
select * from sqlite_master
sqlite_master 的表结构如下:
type |name |tbl_name |rootpage |sql
示范查询结果;
=============
type>>table
name>>android_metadata
tbl_name>>android_metadata
rootpage>>3
sql>>CREATE TABLE android_metadata (locale TEXT)
=============
type>>table
name>>TalkVO
tbl_name>>TalkVO
rootpage>>4
sql>>CREATE TABLE TalkVO (content text,videoPath text,img text,name text,issend BLOB,isPlaying integer,uid integer,_id integer PRIMARY KEY)
2.判断字段是否存在
PRAGMA table_info([TalkVO])
必须 大写,结构如下:
cid | name | type | notnull | dflt_value | pk
示范查询结果;
PRAGMA table_info([TalkVO])
=============
cid>>0
name>>content
type>>text
notnull>>0
dflt_value>>null
pk>>0
=============
cid>>1
1name>>videoPath
type>>text
notnull>>0
dflt_value>>null
pk>>0
=============
cid>>2
name>>img
type>>text
notnull>>0
dflt_value>>null
pk>>0
=============
cid>>3
name>>name
type>>text
notnull>>0
dflt_value>>null
pk>>0
=============
cid>>4
name>>issend
type>>BLOB
notnull>>0
dflt_value>>null
pk>>0
=============
cid>>5
name>>isPlaying
type>>integer
notnull>>0
dflt_value>>null
pk>>0
=============
cid>>6
name>>uid
type>>integer
notnull>>0
dflt_value>>null
pk>>0
=============
cid>>7
name>>_id
type>>integer
notnull>>0
dflt_value>>null
pk>>1
原文地址:http://blog.csdn.net/u010499721/article/details/42262739