Hi, first a thankyou to everyone who helped with my 'date check clause' post.
This time I am grappling with the precompiled CLI .parameter command.
(The first line in the param.cli file is .echo on)
SQLite version 3.29.0 2019-07-10 17:32:03
sqlite> .read param.cli
.tables
-- select * from sqlite_parameters ;
Error: near line 4: no such table: sqlite_parameters
.param init
.tables
select * from sqlite_parameters ;
-- table now exists but not visible, where is it?
.param set $s 'abc'
.param set $slist 'abc, def'
.param set :int 1
.param set :real 1.2
.param set @datex '2019-01-01'
.param set @date date('2019-01-01')
select $s, $slist, :int, :real, @datex, @date ;
abc|abc, def|1|1.2|2017|2019-01-01
select 1 where instr($slist, 'def') > 0 ;
1
select 1 where '2019-01-01' = @date ;
1
.param unset @datex
.param clear
.param list
$s 'abc'
$slist 'abc, def'
:int 1
:real 1.2
@date '2019-01-01'
--------
Initial observations wrt .parameter command:
* INIT works but the temp.table is not visible
(even though one can explicitly insert into and delete from it.)
* SET works but there is some kind of evaluation of the VALUE
(see @datex and @date; '2019-01-01' arithmetically is 2017)
* UNSET works just fine
* LIST works just fine
* CLEAR does nothing at all
As a result:
* I feel that section 16 of the CLI documentation should mention VALUE
treatment.
Additionally, dare I suggest
* that CLEAR be renamed to DROP (action 'drop table') and made to work
* that UNSET be augmented to allow .parameter unset ALL
(ALL is not a valid parameter name; action being 'delete from')
I appreciate renaming clear to drop is probably a non-starter for compatibility.
On the other hand, clear currently does do nothing.
Otherwise, thanks to the development team for a tool that just gets better!
Regards, Martin.
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