Oracle cli client (sqlplus) has a neat feature, if you put `/[enter]` in the prompt, it re-executes the last SQL.

```sql
:) select 1;
┌─1─┐
│ 1 │
└───┘

:) /
┌─1─┐
│ 1 │
└───┘
```

currently `<up><enter>` pollutes the screen by the SQL text and can contain SQL script, not a single query. Probably echo should be disabled in this case as well.
{
    if (!insert_query.data)
        return false;
    auto settings = context->getSettings();
    if (insert_query.settings_ast)
        settings.applyChanges(insert_query.settings_ast->as<ASTSetQuery>()->changes);
    return !settings.async_insert;
}
void ClientBase::processTextAsSingleQuery(const String & full_query)
{
    /// Some parts of a query (result output and formatting) are executed
    /// client-side. Thus we need to parse the query.
    const char * begin = full_query.data();
    auto parsed_query = parseQuery(begin, begin + full_query.size(), false);
    if (!parsed_query)
        return;
    String query_to_execute;
    /// Query will be parsed before checking the result because error does not
    /// always means a problem, i.e. if table already exists, and it is no a
    /// huge problem if suggestion will be added even on error, since this is
    /// just suggestion.