Last updated: Fri, 18 Jul 2008

odbc_columns

(PHP 4, PHP 5)

odbc_columns — Elenca i nomi delle colonne nella tabella specificata.

Descrizione

resource odbc_columns ( resource $id_connessione [, string $qualifica [, string $schema [, string $nome_tabella [, string $nome_colonna ]]]] )

Elenca i nomi di tutte le colonne presenti nel range richiesto. La funzione restituisce un identificatore di risultato ODBC oppure FALSE se si verifica un errore.

Le righe risultanti dall'elaborazione contengono i seguenti campi:

TABLE_QUALIFIER
TABLE_SCHKM
TABLE_NAME
COLUMN_NAME
DATA_TYPE
TYPE_NAME
PRECISION
LENGTH
SCALE
RADIX
NULLABLE
REMARKS

I campi di ordinamento delle righe risultanti sono TABLE_QUALIFIER, TABLE_SCHKM e TABLE_NAME.

Gli argomenti schema , nome_tabella e nome_colonna accettano dei criteri di ricerca ('%' per indicare zero o più caratteri e '_' per indicare un singolo carattere).

Vedere anche odbc_columnprivileges() per ottenere i privilegi associati alle colonne.

odbc_commit

odbc_columnprivileges

Last updated: Fri, 18 Jul 2008

add a note User Contributed Notes
odbc_columns

php dot lpatrick at spamgourmet dot com
02-May-2008 10:52


Since I was just looking for table descriptions of an MS Access file I didn't know the table structure of, I wrote this (where $inputfile is the Access file name):



<?php

$conn = odbc_connect("DRIVER={Microsoft Access Driver (*.mdb)}; DBQ=".$inputfile;, "", "");



$tabs = odbc_tables($conn);

$tables = array();

while (odbc_fetch_row($tabs)){

    if (odbc_result($tabs,"TABLE_TYPE")=="TABLE") {

        $table_name = odbc_result($tabs,"TABLE_NAME");

        $tables["{$table_name}"] = array();

        $cols = odbc_exec($conn,'select * from `'.$table_name.'` where 1=2');  // we don't want content

      $ncols = odbc_num_fields($cols);

        for ($n=1; $n<=$ncols; $n++) {

            $field_name = odbc_field_name($cols, $n);

            $tables["{$table_name}"]["{$field_name}"]['len'] = odbc_field_len($cols, $n);

            $tables["{$table_name}"]["{$field_name}"]['type'] = odbc_field_type($cols, $n);

        }

    }

}

odbc_close ($conn);

print_r($tables);

?>

jeremie dot legrand at komori-chambon dot fr
19-Feb-2008 02:43


Here is the way to use odbc_columns() with "Attunity Connect", an ODBC connector to VMS :



$db = "my_database";

$table = "my_table";

$con = odbc_connect($db, "user", "password");

$result = odbc_columns($con, $db, "", $table, "%");

while (odbc_fetch_row($resu)) {

    echo odbc_result_all($resu);

}

Artur
23-Jan-2007 06:15


This is the only way I could actually get field names using odbc_columns. Hope it will be usefull for someone.



$result = odbc_columns($odbc,$dbhost,"dbo", "KIR_ViolationDetail");



while (odbc_fetch_row($result))

{

  echo odbc_result($result,"COLUMN_NAME");

}

ke3wh at comcast dot net
26-Nov-2004 05:47


The complete script to get into from a DSN MS Access DB Table and display it is below.



function Error_Handler( $msg, $cnx ) {

    echo "$msg \n";

    odbc_close( $cnx);

    exit();

    }



$cnx = odbc_connect( 'DSN_NAME' , '', '' );//connect to MSAccess

    if (!$cnx) {

      Error_handler( "Error in odbc_connect" , $cnx );

    }  



    $res400= odbc_columns($cnx,"DSN_NAME","","TABLE");

    echo odbc_result_all($res400);

laundro at gmail dot com
15-Nov-2004 08:29


Getting all column names from Excel with ODBC:

$cols = odbc_columns($connection, $filename, NULL, $sheet);



where:

$connection is the result of your odbc_connect;

$filename is the filename of the Excel file;

$sheet is the name of the Excel worksheet.



This is useful when you want to query an Excel file without having to name ranges beforehand. With the results obtained from the above command, you can populate an array and use its contents (ie the column names) for further querying.

netaminas at hotamil dot com
25-Feb-2004 02:21


Connect with IBM Client Access 32-bit ODBC driver



To access table information in DB2 iSeries (AS/400) via ODBC Driver i've tried with this code and worked!!!



$conn_ODBC = odbc_connect("DSN", "USER", "PASSW") or die;

$tabela = "table name in IBM iSeries";

$libname = "library name in IBM iSeries"



$res400 = odbc_columns($conn_ODBC, "DSN", $libname, $tabela, "%")  or die("<p><font color=#FF0000>Erro Na Leitura da Tabela ".$tabela." do AS/400: ".odbc_errormsg());



echo odbc_result_all($res400);



Netaminas.com

PORTUGAL

21-Oct-2003 11:44


ODBC & MS ACCESS :



odbc_columns($conn,"DSN_NAME","","TABLE_NAME");

Sergio Sartori
25-Feb-2003 08:05


Using this function on a MS SQL Server 2000 database connection with the syntax:



$res = odbc_columns($connId, $dbName, "%", $tableName, "%");



I actually get a result set with THESE columns name:



TABLE_CAT, TABLE_SCHEM, TABLE_NAME, COLUMN_NAME, DATA_TYPE, TYPE_NAME, COLUMN_SIZE, BUFFER_LENGTH, DECIMAL_DIGITS, NUM_PREC_RADIX, NULLABLE, REMARKS



in the order displayed.

jastern at uci dot edu
26-Sep-2002 02:34


i put an example of using odbc_columns() and odbc_tables() with interbase/ODBC at:



http://www.faqts.com/knowledge_base/view.phtml/aid/18988

josh at engledental dot com
12-Jun-2002 05:34


(PHP4.2.1, Win2k, MSSQL 2K)



The result id returned from this function does not appear to behave exactly the same as a result id returned from a query.  



I get all sorts of errors when I try to use subsequent odbc functions on the result id, such as:



odbc_fetch_into - This function only seems to work if I don't specify a row number or if the row number = 0.



odbc_fetch_row - This function will not return a row from the result set.  Under some scenarios, I am able to use it in a while loop, but its seems buggy.  Hence, my odbc_num_of_rows function (hack to replace the non-functional odbc_num_rows function) also doesn't work.



I recommend dumping the results into an array immediately and freeing the result id created by this function.



ps - If anyone has any further insight or workarounds, I would appreciate them.

LyleE at LocalMotion dot com
22-Feb-2001 11:53


Took me a while to figure out this command, thought I would save some other people the time.  We couldn't quite figure out what the qualifier was.  For MSSQL 7.0, it is the Database that you are connecing to.  For the pubs database it would look something like this.





$rs = odbc_columns($DBConnection, "Pubs", "%", "jobs");





That would be for showing the jobs table.

add a note

odbc_commit

odbc_columnprivileges

Last updated: Fri, 18 Jul 2008