![]() |
Home | Libraries | People | FAQ | More |
Starts a text query as a multi-function operation.
void start_query( string_view query_string, execution_state& st, error_code&, diagnostics&);
Writes the query request and reads the initial server response and the
column metadata, but not the generated rows, if any. After this operation
completes, st will have
execution_state::meta populated, and may become
execution_state::complete if the operation did
not generate any rows (e.g. it was an UPDATE).
Metadata will be populated according to this->meta_mode().
If the operation generated any rows, these must
be read (by using read_some_rows) before engaging
in any further network operation. Otherwise, the results are undefined.
query_stringshould be
encoded using the connection's character set.