Howdy --

I have the following code, which worked perfectly with BaseX 7.3:

declare function sqlimport:load-sql-source-raw($config as element(config), $sql_source as element(sql-source)) {
        let $handle := sql:connect(
                concat($sql_source/@uri, "/", $sql_source/@schema/string()),
                $sql_source/@username,
                $sql_source/@password)
        let $all_column_names := sql:execute(
                sql:prepare( 
                        $handle, 
                        "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA=? AND TABLE_NAME=?"),
                <sql:parameters>
                        <sql:parameter type='string'>{$sql_source/@schema/string()}</sql:parameter>
                        <sql:parameter type='string'>{$sql_source/@table/string()}</sql:parameter>
                </sql:parameters> 
        )/sql:column[@name="COLUMN_NAME"]
        let $column_names := $all_column_names/text()[not(.=$sql_source/ignore-column/text())]
        return sql:execute($handle, concat("SELECT ", string-join($column_names, ", "), " FROM ", $sql_source/@table/string()))
};  

With BaseX 7.5 and current snapshots of 7.5.1, however, it yields the following error:

[BXSQ0002] No opened connection with id 1

...positioned at the sql:execute() call.

I would understand sql:connect() failing -- but having the connection appear to take place without errors, followed by a failure with the execution, is surprising.

Guidance?