pg_convert
As of postgresql 9.1 "standard_conforming_strings" is set to on
This will not work anymore
<?php
$copy_message = "1\t\\N\t300";
pg_copy_from($db, "message", $copy_message);
?>
result will be a "N" in that field. if the field allow text that is else it will fail to insert the post.
simple fix
<?php
$copy_message = "1\t\\NULL\t300";
pg_copy_from($db, "message", $copy_message, "\t","\\NULL");
?>
pg_copy_from
(PHP 4 >= 4.2.0, PHP 5)
pg_copy_from — Insertar registros dentro de una tabla desde un array
Descripción
bool pg_copy_from
( resource
$connection
, string $table_name
, array $rows
[, string $delimiter
[, string $null_as
]] )
La función pg_copy_from() inserta registros dentro de una tabla desde
el parámetro rows. Esta realiza internamente un comando SQL COPY FROM
para insertar registros.
Parámetros
-
connection -
Recurso de conexión a la base de datos PostgreSQL.
-
table_name -
Nombre de la tabla en la cual se copiará lo que provenga de
rows. -
rows -
Un array de datos a ser copiados dentro de
table_name. Cada valor en el parámetrorowsse convierte en una fila entable_name. Cada valor en el parámetrorowsdebe ser una cadena delimitada de los valores a insertar en cada campo. Los valores deben ser terminados con un salto de lÃnea. -
delimiter -
SÃmbolo que serpara valores por cada campo en cada elemento del parámetro
rows. El predeterminado es TAB. -
null_as -
Es como SQL NULL (anula) los valores que son representados en el parámetro
rows. El predeterminado es \N ("\\N").
Valores devueltos
Devuelve TRUE en caso de éxito o FALSE en caso de error.
Ejemplos
Ejemplo #1 Ejemplo de la función pg_copy_from()
<?php
$db = pg_connect("dbname=publisher") or die("No se pudo conectar");
$rows = pg_copy_to($db, $table_name);
pg_query($db, "DELETE FROM $table_name");
pg_copy_from($db, $table_name, $rows);
?>
add a note
User Contributed Notes
pg_copy_from - [7 notes]
Dave ¶
1 year ago
Dave ¶
2 years ago
Fix for "Copy command failed: ERROR: literal carriage return
found in data" or
"Copy command failed: ERROR: missing data for column
"message" CONTEXT: COPY message, line 1:"
<?php
$message = "HEJ\rHEJ\nHEJ\r\nHEJ\n\rHEJ\tHELLO\\";
$message = addslashes($message);
$message = str_replace(
array("\n","\r","\t"),
array("\\n","\\r","\\t"),
$message);
$copy_message = "1\t". $message ."\t300";
pg_copy_from($db, "message", $copy_message);
?>
Anonymous ¶
3 years ago
see also: pg_put_line for a solution that does not require buffering of all the data to be copied,
kapouer_php at melix dot org ¶
5 years ago
pg syntax is :
COPY test (cola, colb, colc) FROM stdin;
...
this function doesn't let you in which order the columns are !
vlad at php dot net ¶
10 years ago
By default NULL values are a backslash followed with capital N ("\\N").
Also, you can't insert entries with OIDs (I've added it to my TODO list though)
carl at thep.lu.se ¶
10 years ago
Something needs to be said about the format of the array.
Judging by what I've seen, it's pretty much what you get
from loading a tab-separated file with file(). That is, the
lines are linefeed-terminated and there's no need to have
an extra line with "\.". On the other hand, when I try using this
command the connection to the server ends up in some odd
state and is then lost:
PHP Warning: UåSèo() query failed: server closed the connection unexpectedly
I think it might be safer to use the lower-level function
pg_put_line() for now.
etiger13 at gmail dot com ¶
3 years ago
This will not look in other schema's, only the schema's in your search path. You can temporarily change this behavior with the following code:
<?php
pg_query($conn, "SET search_path TO myschema;");
$copy_from = pg_copy_from($conn, 'tablename', $filetoarray, ",");
if ( !$copy_from )
{
echo pg_last_error($conn);
exit;
}
pg_query("RESET search_path;");
?>