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drop table if exists learning_new4;
create table learning_new4(id INTEGER default 1 primary key AUTOINCREMENT, sTtile text , sContent text, sort text);
insert into learning_new4(sTtile, sContent, sort) select sTtile, sContent, sort from learning_new3 order by sort desc;
// 从这个表中选取一部分字段,然后放到一个新生成的表中
drop table if exists FullNew;
create table FullNew(id INTEGER DEFAULT 1 PRIMARY KEY AUTOINCREMENT, sTitle varchar(80) , sContent memo, sort TEXT);
insert into FullNew(sTitle, sContent, sort) select field2, field3, field4 from learning_new4 order by field4 desc;
// 创建新表从已有表中。
drop table if exists duanxinleyuan;
create table duanxinleyuan(id INTEGER DEFAULT 1 PRIMARY KEY AUTOINCREMENT, sTitle varchar(80) , sContent memo);
insert into duanxinleyuan(sTitle, sContent) select sTitle, sContent from FullNew where id between 1 and 59;
// 把FullNew中的id为60到140之间的行插入到已有表的末尾
insert into duanxinleyuan(sTitle, sContent) select sTitle, sContent from FullNew where id between 60 and 140;
// 如我想删除表A中ID=50~150之间的100条记录
// 删除行数据
DELETE FROM A WHERE chapterid > 49 AND chapterid < 151
// 从已有表中进行倒序,生成新表, 按id倒序
drop table if exists guihua_des;
create table guihua_des(id INTEGER default 1 primary key AUTOINCREMENT, sTitle varchar(80) , sContent memo);
insert into guihua_des(sTitle, sContent) select sTitle, sContent from guihua order by id desc;
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