lizhe <l...@...> writes:

> 
> 
> Dear Sir:
>   I have a table type is blob,I think update  integer type, 
>   How to solve my trouble? "alter" SQL?

[...]

use the CLI (sqlite3) and your favourite editor:

sqlite3 yourdatabase
.output file.sql
.dump
.q

edit file.sql
<change from your column type to INTEGER>

sqlite3 yournewdatabase < file.sql

ready

Oliver

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