Génération des INSERT : bricolage pour respecter l'ordre des tables spécifié

     */

    function generateSQLForTablesColumnsInfos(array $tableNames)

    {

        $tables = implode(',', array_map(function ($tn) {

            return "'$tn'";

        }, $tableNames));

        return <<<EOS

select table_name, column_name, data_type 

from all_tab_columns 

where table_name in ($tables)

order by column_id

        // Attention, bricolage pour respecter l'ordre des tables fournies !

        $i = 0;

        $sqlParts = array_map(function($name) use ($i) {

            return sprintf(

                "select %d as table_order, table_name, column_name, column_id, data_type from all_tab_columns where table_name = '%s'",

                ++$i, $name);

        }, $tableNames);

        $unions = implode(

            PHP_EOL . 'union all' . PHP_EOL,

            $sqlParts);

        $template = <<<EOS

select * from (

%s

) 

order by table_order, column_id

EOS;

        return sprintf($template, $unions);

    }

    /**