pg_copy_to
(PHP 4 >= 4.2.0, PHP 5)
pg_copy_to — Copy a table to an array
Описание
array pg_copy_to
( resource $connection
, string $table_name
[, string $delimiter
[, string $null_as
]] )
pg_copy_to() copies a table to an array. It issues COPY TO SQL command internally to retrieve records.
Список параметров
- connection
-
PostgreSQL database connection resource.
- table_name
-
Name of the table from which to copy the data into rows .
- delimiter
-
The token that separates values for each field in each element of rows . Default is TAB.
- null_as
-
How SQL NULL values are represented in the rows . Default is \N ("\\N").
Возвращаемые значения
An array with one element for each line of COPY data. It returns FALSE on failure.
Примеры
Пример #1 pg_copy_to() example
<?php
$db = pg_connect("dbname=publisher") or die("Could not connect");
$rows = pg_copy_to($db, $table_name);
pg_query($db, "DELETE FROM $table_name");
pg_copy_from($db, $table_name, $rows);
?>
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Расширения для работы с базами данных отдельных производителей
- PostgreSQL
- pg_affected_rows
- pg_cancel_query
- pg_client_encoding
- pg_close
- pg_connect_poll
- pg_connect
- pg_connection_busy
- pg_connection_reset
- pg_connection_status
- pg_consume_input
- pg_convert
- pg_copy_from
- pg_copy_to
- pg_dbname
- pg_delete
- pg_end_copy
- pg_escape_bytea
- pg_escape_identifier
- pg_escape_literal
- pg_escape_string
- pg_execute
- pg_fetch_all_columns
- pg_fetch_all
- pg_fetch_array
- pg_fetch_assoc
- pg_fetch_object
- pg_fetch_result
- pg_fetch_row
- pg_field_is_null
- pg_field_name
- pg_field_num
- pg_field_prtlen
- pg_field_size
- pg_field_table
- pg_field_type_oid
- pg_field_type
- pg_flush
- pg_free_result
- pg_get_notify
- pg_get_pid
- pg_get_result
- pg_host
- pg_insert
- pg_last_error
- pg_last_notice
- pg_last_oid
- pg_lo_close
- pg_lo_create
- pg_lo_export
- pg_lo_import
- pg_lo_open
- pg_lo_read_all
- pg_lo_read
- pg_lo_seek
- pg_lo_tell
- pg_lo_truncate
- pg_lo_unlink
- pg_lo_write
- pg_meta_data
- pg_num_fields
- pg_num_rows
- pg_options
- pg_parameter_status
- pg_pconnect
- pg_ping
- pg_port
- pg_prepare
- pg_put_line
- pg_query_params
- pg_query
- pg_result_error_field
- pg_result_error
- pg_result_seek
- pg_result_status
- pg_select
- pg_send_execute
- pg_send_prepare
- pg_send_query_params
- pg_send_query
- pg_set_client_encoding
- pg_set_error_verbosity
- pg_socket
- pg_trace
- pg_transaction_status
- pg_tty
- pg_unescape_bytea
- pg_untrace
- pg_update
- pg_version
Коментарии
"It issues COPY TO SQL command internally to insert records"
I suspect this statement is incorrect, or that s/insert/retrieve/ is appropriate.
You cannot specify the schema name in this command. You can change the search path for just one query by using the following code:
<?php
pg_query($conn, "SET search_path TO myschema;");
$copy_to = pg_copy_to($conn, 'tablename');
pg_query("RESET search_path;");
?>
Worth noting here that just like the COPY TO statement in PostgreSQL, '$table_name' can include a list of columns or be a select query as well.e.g.:
$rows = pg_copy_to($db,'schema."TableName" (column1, column2, ...)';
$rows = pg_copy_to($db,'(SELECT ...)');