:sig
DValue sqlite_query(SQLite* db, String q)
DValue sqlite_query(SQLite* db, String q, StringMap params)

:params
db : pointer to an active SQLite connection
q : SQL statement
params : optional named parameter map
return value : list of result rows as a DValue

:see
>sqlite
sqlite_connect
sqlite_error
sqlite_insert_id
sqlite_affected_rows
0_DValue

:content
Executes one SQLite statement and returns result rows as a `DValue` array. Multi-statement SQL strings are rejected so migrations cannot silently run only their first statement.

Use named parameters with `:name` placeholders only. Positional `?` placeholders and SQLite's other named marker forms (`@name`, `$name`) are rejected so UCE SQLite queries use the same placeholder style as the MySQL helper. UCE binds parameters with SQLite prepared statements; it does not substitute values into the SQL string.

```cpp
SQLite* db = sqlite_connect("/tmp/app.sqlite");

StringMap params;
params["email"] = "ada@example.test";
DValue rows = sqlite_query(db,
    "select id, email from users where email = :email",
    params
);
```

Result rows are objects keyed by column name. SQLite integer, float, text, blob, and null values are converted to DValue values. Blob values are returned as byte strings.

For statements that do not return rows, inspect `sqlite_affected_rows()` or `sqlite_insert_id()` after the call.
