On Monday, 22 July, 2019 08:18, Richard Damon :
>But he was to be able to provide the args as {‘0’:’one, ‘10’:’ten’}
>and since he only uses positional rags 1 and 10 that it be OK, i.e.
>positional args are treated as key word args, and only those actually
>used are needed. THAT can’t be
Would sqlite3_expanded_sql(stmt) be of any use?
https://sqlite.org/c3ref/expanded_sql.html
From: sqlite-users on behalf of
test user
Sent: Monday, July 22, 2019 1:36:25 PM
To: SQLite mailing list
Subject: Re: [sqlite] [EXTERNAL] Determining valid
But he was to be able to provide the args as {‘0’:’one, ‘10’:’ten’} and since
he only uses positional rags 1 and 10 that it be OK, i.e. positional args are
treated as key word args, and only those actually used are needed. THAT can’t
be provided by the API.
> On Jul 22, 2019, at 9:22 AM, Keith
test user wrote:
> I want my library to be able to detect the problem programatically.
>
> I think SQLite internally knows how many placeholders are in the query at
> parse time.
>
> My question is how can I get the data via the API
At the moment, there is no such mechanism in the API.
You could
I don't see what is so hard. APSW does it:
>python
Python 2.7.16 (v2.7.16:413a49145e, Mar 4 2019, 01:30:55) [MSC v.1500 32 bit
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import apsw
>>> db = apsw.Connection('')
>>> db.execute('select ?, ?10;',
The problem is you are defining your problem differently than SQLite does, so
it can’t help you.
To SQLite, a query with ?10 in it has (at least) 10 positional parameters, and
if you are defining that the user needs to explicitly provide values for all
parameters, (by SQLite) that means they
This cannot be determined programatically.
The query generator stores an OP_Variable opcode when the SQL program needs to
access the contents of an SQL parameter, and keeps track of the highest
parameter number used, which determines the size of the parameter array.
Even if you were to examine
On 7/22/19, test user wrote:
>
> I think SQLite internally knows how many placeholders are in the query at
> parse time.
SQLite knows the *maximum" placeholder. If you say:
INSERT INTO t1(x) VALUES(?100);
Then it allocates an array of 100 placeholders. It does not know that
the first 99
The question you are asking is properly adressed by the logic that creates the
statements itself. The statement generator itself needs to keep track of the
SQL parameters it has created and that something has been bound for each
parameter before issuing a call to sqlite3_step. Note that as far
I understand the problem, but I want my library to be able to detect the
problem programatically.
Currently if a user mixes index-based and key-based placeholders, the only
thing a library using SQLite can do us run the query with unbound
placeholders set to null (the SQLite default).
Id like
On Monday, 22 July, 2019 04:34, Enzo wrote:
>It is not the same information.
>I want to be able to determine "has the user bound all placeholder
>values with data?".
>The user provides this as input:
>query="SELECT ?, ?10"
>data={"0": "data-a", "10": "data-b"}
>Note: This IS valid, as they
It is not the same information.
I want to be able to determine "has the user bound all placeholder values
with data?".
The user provides this as input:
query="SELECT ?, ?10"
data={"0": "data-a", "10": "data-b"}
Note: This IS valid, as they have provided all data for placeholders.
Using the
On 22 Jul 2019, at 10:53am, test user wrote:
> A new function could be added:
>
> For query string "SELECT ?, ?10"
>
> `sqlite3_bind_parameter_valid_indexes() -> [1, 10]`
>
> How can I propose adding this?
As given in my previous response, the SQLite library already contains these two:
int
Simon Slavin: "Please don't use numbers as names."
The manual states:
- "?NNN": where N is an *integer*.
- "?": Programmers are encouraged to use one of the symbolic formats below
or the ?NNN format above instead."
The use case:
I am creating a library that takes SQL from the application and
Hi,
I'm using the Xerial JDBC driver for accessing SQLite.
I have the problem that it is not possible to drop a table in the same
database connection while a resultset is open:
0. Preparation: Create table t1 and add some values
1. Open connection
2. Create temporary table tmp1
3. Execute
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