pg_copy_to

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

pg_copy_to — Copy a table to an array

Опис

pg_copy_to(
    PgSql\Connection $connection,
    string $table_name,
    string $separator = "\t",
    string $null_as = "\\\\N"
): array|false

pg_copy_to() copies a table to an array. It issues COPY TO SQL command internally to retrieve records.

Параметри

connection: Примірник PgSql\Connection.
table_name: Name of the table from which to copy the data into rows.
separator: The token that separates values for each field in each element of rows. Default is \t.
null_as: How SQL NULL values are represented in the rows. Default is \\N ("\\\\N").

Значення, що повертаються

An array with one element for each line of COPY data, або false в разі помилки.

Журнал змін

Версія	Опис
8.1.0	Тепер параметр `connection` має бути примірником PgSql\Connection. Раніше очікувався resource.

Приклади

Приклад #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);
?>

Прогляньте також

pg_copy_from() - Insert records into a table from an array

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User Contributed Notes 3 notes

down

John M ¶

4 years ago

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 ...)');

down

setantae at submonkey dot net ¶

21 years ago

"It issues COPY TO SQL command internally to insert records"

I suspect this statement is incorrect, or that s/insert/retrieve/ is appropriate.

down

-3

etiger13 at gmail dot com ¶

14 years ago

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;");

?>

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