John Elrick wrote:
> Angus March wrote:
>
>> John Elrick wrote:
>>
>>
>>> Angus March wrote:
>>>
>>>
>>>
>>>> I'm trying to make a prepared statement and bind parameters to it, but
>>>> the documentation is very confusing. This is the statement I'm trying to
>>>> prepare:
>>>> UPDATE 'KEYS' SET 'IVAndKey'=:VVV WHERE "ItemID"=?NNN
>>>> Where IVAndKey is a BLOB and ItemID is an INTEGER and the primary key
>>>> for the table. I'm told that there is a syntax error near "NNN".
>>>>
>>>>
>>>>
>>>>
>>> The page (http://sqlite.org/c3ref/bind_blob.html) reads:
>>>
>>> "In the SQL strings input to sqlite3_prepare_v2() and its variants,
>>> literals may be replaced by a parameter in one of these forms:
>>>
>>> * ?
>>> * ?NNN
>>> * :VVV
>>> * @VVV
>>> * $VVV "
>>>
>>> The documentation for NNN is three sentences below this and states that
>>> the NNN refers to a number such as:
>>>
>>> ?1 ?2
>>>
>>>
>>>
>> I don't see that anywhere on the page. An example might have made a
>> difference.
>>
>>
>
> "The second argument is the index of the SQL parameter to be set. The
> leftmost SQL parameter has an index of 1. When the same named SQL
> parameter is used more than once, second and subsequent occurrences have
> the same index as the first occurrence. The index for named parameters
> can be looked up using the sqlite3_bind_parameter_index() API if
> desired. The index for "?NNN" parameters is the value of NNN. The NNN
> value must be between 1 and the sqlite3_limit() parameter
> SQLITE_LIMIT_VARIABLE_NUMBER (default value: 999)."
>
I read that, and it didn't make any sense to me. At that point, I
knew I'd be turning to the mailing-list sooner or later.
>
> Although quotes can be used, they are not needed when the table and
> field names contain all valid characters. I simply saw no value in
> adding them, and they did seem to unnecessarily complicate the text.
>
It also says on http://www.sqlite.org/lang_keywords.html that in
case you use a name that one day becomes a keyword you should always use
quotes.
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