fbsql_query
Opis
resource fbsql_query ( string query [, resource link_identifier [, int batch_size]] )
Sends a query to the currently active database on
the server.
If the query succeeds, you can call fbsql_num_rows() to find out how many rows were returned for a SELECT statement or fbsql_affected_rows() to find out how many rows were affected by a DELETE, INSERT, REPLACE, or UPDATE statement.
Parametry
queryThe SQL query to be executed.
Notatka: The query string shall always end with a semicolon.
link_identifierIdentyfikator połączenia FrontBase zwrócony przez fbsql_connect() lub fbsql_pconnect().
Jeśli link jest opcjonalny i nie zostanie podany, funkcja spróbuje znaleźć otwarte połączenie do serwera FrontBase i jeśli takiego połączenia nie znajdzie, spróbuje utworzyć je tak jak fbsql_connect() byłaby wywołana bez argumentów
batch_size
Zwracane wartości
fbsql_query() returns TRUE (non-zero) or FALSE to indicate whether or not the query succeeded. A return value of TRUE means that the query was legal and could be executed by the server. It does not indicate anything about the number of rows affected or returned. It is perfectly possible for a query to succeed but affect no rows or return no rows.
For SELECT statements, fbsql_query() returns a new result identifier that you can pass to fbsql_result().
fbsql_query() will also fail and return FALSE if you don't have permission to access the table(s) referenced by the query.
Przykłady
The following query is syntactically invalid, so fbsql_query() fails and returns FALSE:
The following query is semantically invalid if my_col is not a column in the table my_tbl, so fbsql_query() fails and returns FALSE:
Patrz także
| fbsql_affected_rows() |
| fbsql_db_query() |
| fbsql_free_result() |
| fbsql_result() |
| fbsql_select_db() |
| fbsql_connect() |
| Poprzedni | Spis treści | Następny |
| fbsql_pconnect | Początek rozdziału | <