pg_copy_to

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

pg_copy_to — Copy a table to an array

Descrição

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.

Parâmetros

connection: Uma instância de 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").

Valor Retornado

An array with one element for each line of COPY data, ou false em caso de falha.

Registro de Alterações

Versão	Descrição
8.1.0	O parâmetro `connection` agora espera uma instância de PgSql\Connection; anteriormente, um resource era esperado.

Exemplos

Exemplo #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);
?>

Veja Também

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

add a note

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 ¶

15 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;");

?>

add a note