Current File : /home/vacivi36/ava/lib/adodb/drivers/adodb-mssqlnative.inc.php
<?php
/**
* Native MSSQL driver.
*
* Requires mssql client. Works on Windows.
* https://docs.microsoft.com/sql/connect/php
*
* This file is part of ADOdb, a Database Abstraction Layer library for PHP.
*
* @package ADOdb
* @link https://adodb.org Project's web site and documentation
* @link https://github.com/ADOdb/ADOdb Source code and issue tracker
*
* The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
* any later version. This means you can use it in proprietary products.
* See the LICENSE.md file distributed with this source code for details.
* @license BSD-3-Clause
* @license LGPL-2.1-or-later
*
* @copyright 2000-2013 John Lim
* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/
// security - hide paths
if (!defined('ADODB_DIR')) die();
if (!function_exists('sqlsrv_configure')) {
die("mssqlnative extension not installed");
}
if (!function_exists('sqlsrv_set_error_handling')) {
function sqlsrv_set_error_handling($constant) {
sqlsrv_configure("WarningsReturnAsErrors", $constant);
}
}
if (!function_exists('sqlsrv_log_set_severity')) {
function sqlsrv_log_set_severity($constant) {
sqlsrv_configure("LogSeverity", $constant);
}
}
if (!function_exists('sqlsrv_log_set_subsystems')) {
function sqlsrv_log_set_subsystems($constant) {
sqlsrv_configure("LogSubsystems", $constant);
}
}
class ADODB_mssqlnative extends ADOConnection {
var $databaseType = "mssqlnative";
var $dataProvider = "mssqlnative";
var $replaceQuote = "''"; // string to use to replace quotes
var $fmtDate = "'Y-m-d'";
var $fmtTimeStamp = "'Y-m-d\TH:i:s'";
/**
* Enabling InsertID capability will cause execution of an extra query
* {@see $identitySQL} after each INSERT statement. To improve performance
* when inserting a large number of records, you should switch this off by
* calling {@see enableLastInsertID enableLastInsertID(false)}.
* @var bool $hasInsertID
*/
var $hasInsertID = true;
var $substr = "substring";
var $length = 'len';
var $hasAffectedRows = true;
var $poorAffectedRows = false;
var $metaDatabasesSQL = "select name from sys.sysdatabases where name <> 'master'";
var $metaTablesSQL="select name,case when type='U' then 'T' else 'V' end from sysobjects where (type='U' or type='V') and (name not in ('sysallocations','syscolumns','syscomments','sysdepends','sysfilegroups','sysfiles','sysfiles1','sysforeignkeys','sysfulltextcatalogs','sysindexes','sysindexkeys','sysmembers','sysobjects','syspermissions','sysprotects','sysreferences','systypes','sysusers','sysalternates','sysconstraints','syssegments','REFERENTIAL_CONSTRAINTS','CHECK_CONSTRAINTS','CONSTRAINT_TABLE_USAGE','CONSTRAINT_COLUMN_USAGE','VIEWS','VIEW_TABLE_USAGE','VIEW_COLUMN_USAGE','SCHEMATA','TABLES','TABLE_CONSTRAINTS','TABLE_PRIVILEGES','COLUMNS','COLUMN_DOMAIN_USAGE','COLUMN_PRIVILEGES','DOMAINS','DOMAIN_CONSTRAINTS','KEY_COLUMN_USAGE','dtproperties'))";
var $metaColumnsSQL =
"select c.name,
t.name as type,
c.length,
c.xprec as precision,
c.xscale as scale,
c.isnullable as nullable,
c.cdefault as default_value,
c.xtype,
t.length as type_length,
sc.is_identity
from syscolumns c
join systypes t on t.xusertype=c.xusertype
join sysobjects o on o.id=c.id
join sys.tables st on st.name=o.name
join sys.columns sc on sc.object_id = st.object_id and sc.name=c.name
where o.name='%s'";
var $hasTop = 'top'; // support mssql SELECT TOP 10 * FROM TABLE
var $hasGenID = true;
var $sysDate = 'convert(datetime,convert(char,GetDate(),102),102)';
var $sysTimeStamp = 'GetDate()';
var $maxParameterLen = 4000;
var $arrayClass = 'ADORecordSet_array_mssqlnative';
var $uniqueSort = true;
var $leftOuter = '*=';
var $rightOuter = '=*';
var $ansiOuter = true; // for mssql7 or later
var $identitySQL = 'select SCOPE_IDENTITY()'; // 'select SCOPE_IDENTITY'; # for mssql 2000
var $uniqueOrderBy = true;
var $_bindInputArray = true;
var $_dropSeqSQL = "drop table %s";
var $connectionInfo = array('ReturnDatesAsStrings'=>true);
var $cachedSchemaFlush = false;
var $sequences = false;
var $mssql_version = '';
function __construct()
{
if ($this->debug) {
ADOConnection::outp("<pre>");
sqlsrv_set_error_handling( SQLSRV_ERRORS_LOG_ALL );
sqlsrv_log_set_severity( SQLSRV_LOG_SEVERITY_ALL );
sqlsrv_log_set_subsystems(SQLSRV_LOG_SYSTEM_ALL);
sqlsrv_configure('WarningsReturnAsErrors', 0);
} else {
sqlsrv_set_error_handling(0);
sqlsrv_log_set_severity(0);
sqlsrv_log_set_subsystems(SQLSRV_LOG_SYSTEM_ALL);
sqlsrv_configure('WarningsReturnAsErrors', 0);
}
}
/**
* Initializes the SQL Server version.
* Dies if connected to a non-supported version (2000 and older)
*/
function ServerVersion() {
$data = $this->ServerInfo();
preg_match('/^\d{2}/', $data['version'], $matches);
$version = (int)reset($matches);
// We only support SQL Server 2005 and up
if($version < 9) {
die("SQL SERVER VERSION {$data['version']} NOT SUPPORTED IN mssqlnative DRIVER");
}
$this->mssql_version = $version;
}
function ServerInfo() {
global $ADODB_FETCH_MODE;
static $arr = false;
if (is_array($arr))
return $arr;
if ($this->fetchMode === false) {
$savem = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
} elseif ($this->fetchMode >=0 && $this->fetchMode <=2) {
$savem = $this->fetchMode;
} else
$savem = $this->SetFetchMode(ADODB_FETCH_NUM);
$arrServerInfo = sqlsrv_server_info($this->_connectionID);
$ADODB_FETCH_MODE = $savem;
$arr = array();
$arr['description'] = $arrServerInfo['SQLServerName'].' connected to '.$arrServerInfo['CurrentDatabase'];
$arr['version'] = $arrServerInfo['SQLServerVersion'];//ADOConnection::_findvers($arr['description']);
return $arr;
}
function IfNull( $field, $ifNull )
{
return " ISNULL($field, $ifNull) "; // if MS SQL Server
}
public function enableLastInsertID($enable = true) {
$this->hasInsertID = $enable;
$this->lastInsID = false;
}
/**
* Get the last value inserted into an IDENTITY column.
*
* The value will actually be set in {@see _query()} when executing an
* INSERT statement, but only if the connection's $hasInsertId property
* is true; this can be set with {@see enableLastInsertId()}.
*
* @inheritDoc
*/
protected function _insertID($table = '', $column = '')
{
return $this->lastInsID;
}
function _affectedrows()
{
if ($this->_queryID)
return sqlsrv_rows_affected($this->_queryID);
}
function GenID($seq='adodbseq',$start=1) {
switch($this->mssql_version){
case 9:
case 10:
return $this->GenID2008($seq, $start);
break;
default:
return $this->GenID2012($seq, $start);
break;
}
}
function CreateSequence($seq='adodbseq',$start=1)
{
switch($this->mssql_version){
case 9:
case 10:
return $this->CreateSequence2008($seq, $start);
break;
default:
return $this->CreateSequence2012($seq, $start);
break;
}
}
/**
* For Server 2005,2008, duplicate a sequence with an identity table
*/
function CreateSequence2008($seq='adodbseq',$start=1)
{
if($this->debug) ADOConnection::outp("<hr>CreateSequence($seq,$start)");
sqlsrv_begin_transaction($this->_connectionID);
$start -= 1;
$this->Execute("create table $seq (id int)");//was float(53)
$ok = $this->Execute("insert into $seq with (tablock,holdlock) values($start)");
if (!$ok) {
if($this->debug) ADOConnection::outp("<hr>Error: ROLLBACK");
sqlsrv_rollback($this->_connectionID);
return false;
}
sqlsrv_commit($this->_connectionID);
return true;
}
/**
* Proper Sequences Only available to Server 2012 and up
*/
function CreateSequence2012($seq='adodbseq',$start=1){
if (!$this->sequences){
$sql = "SELECT name FROM sys.sequences";
$this->sequences = $this->GetCol($sql);
}
$ok = $this->Execute("CREATE SEQUENCE $seq START WITH $start INCREMENT BY 1");
if (!$ok)
die("CANNOT CREATE SEQUENCE" . print_r(sqlsrv_errors(),true));
$this->sequences[] = $seq;
}
/**
* For Server 2005,2008, duplicate a sequence with an identity table
*/
function GenID2008($seq='adodbseq',$start=1)
{
if($this->debug) ADOConnection::outp("<hr>CreateSequence($seq,$start)");
sqlsrv_begin_transaction($this->_connectionID);
$ok = $this->Execute("update $seq with (tablock,holdlock) set id = id + 1");
if (!$ok) {
$start -= 1;
$this->Execute("create table $seq (id int)");//was float(53)
$ok = $this->Execute("insert into $seq with (tablock,holdlock) values($start)");
if (!$ok) {
if($this->debug) ADOConnection::outp("<hr>Error: ROLLBACK");
sqlsrv_rollback($this->_connectionID);
return false;
}
}
$num = $this->GetOne("select id from $seq");
sqlsrv_commit($this->_connectionID);
return $num;
}
/**
* Only available to Server 2012 and up
* Cannot do this the normal adodb way by trapping an error if the
* sequence does not exist because sql server will auto create a
* sequence with the starting number of -9223372036854775808
*/
function GenID2012($seq='adodbseq',$start=1)
{
/*
* First time in create an array of sequence names that we
* can use in later requests to see if the sequence exists
* the overhead is creating a list of sequences every time
* we need access to at least 1. If we really care about
* performance, we could maybe flag a 'nocheck' class variable
*/
if (!$this->sequences){
$sql = "SELECT name FROM sys.sequences";
$this->sequences = $this->GetCol($sql);
}
if (!is_array($this->sequences)
|| is_array($this->sequences) && !in_array($seq,$this->sequences)){
$this->CreateSequence2012($seq, $start);
}
$num = $this->GetOne("SELECT NEXT VALUE FOR $seq");
return $num;
}
// Format date column in sql string given an input format that understands Y M D
function SQLDate($fmt, $col=false)
{
if (!$col) {
$col = $this->sysTimeStamp;
}
$s = '';
$ConvertableFmt=array(
"m/d/Y"=>101, "m/d/y"=>101 // US
,"Y.m.d"=>102, "y.m.d"=>102 // ANSI
,"d/m/Y"=>103, "d/m/y"=>103 // French /english
,"d.m.Y"=>104, "d.m.y"=>104 // German
,"d-m-Y"=>105, "d-m-y"=>105 // Italian
,"m-d-Y"=>110, "m-d-y"=>110 // US Dash
,"Y/m/d"=>111, "y/m/d"=>111 // Japan
,"Ymd"=>112, "ymd"=>112 // ISO
,"H:i:s"=>108 // Time
);
if (key_exists($fmt,$ConvertableFmt)) {
return "convert (varchar ,$col," . $ConvertableFmt[$fmt] . ")";
}
$len = strlen($fmt);
for ($i=0; $i < $len; $i++) {
if ($s) $s .= '+';
$ch = $fmt[$i];
switch($ch) {
case 'Y':
case 'y':
$s .= "datename(yyyy,$col)";
break;
case 'M':
$s .= "convert(char(3),$col,0)";
break;
case 'm':
$s .= "replace(str(month($col),2),' ','0')";
break;
case 'Q':
case 'q':
$s .= "datename(quarter,$col)";
break;
case 'D':
case 'd':
$s .= "replace(str(day($col),2),' ','0')";
break;
case 'h':
$s .= "substring(convert(char(14),$col,0),13,2)";
break;
case 'H':
$s .= "replace(str(datepart(hh,$col),2),' ','0')";
break;
case 'i':
$s .= "replace(str(datepart(mi,$col),2),' ','0')";
break;
case 's':
$s .= "replace(str(datepart(ss,$col),2),' ','0')";
break;
case 'a':
case 'A':
$s .= "substring(convert(char(19),$col,0),18,2)";
break;
case 'l':
$s .= "datename(dw,$col)";
break;
default:
if ($ch == '\\') {
$i++;
$ch = substr($fmt,$i,1);
}
$s .= $this->qstr($ch);
break;
}
}
return $s;
}
function BeginTrans()
{
if ($this->transOff) return true;
$this->transCnt += 1;
if ($this->debug) ADOConnection::outp('<hr>begin transaction');
sqlsrv_begin_transaction($this->_connectionID);
return true;
}
function CommitTrans($ok=true)
{
if ($this->transOff) return true;
if ($this->debug) ADOConnection::outp('<hr>commit transaction');
if (!$ok) return $this->RollbackTrans();
if ($this->transCnt) $this->transCnt -= 1;
sqlsrv_commit($this->_connectionID);
return true;
}
function RollbackTrans()
{
if ($this->transOff) return true;
if ($this->debug) ADOConnection::outp('<hr>rollback transaction');
if ($this->transCnt) $this->transCnt -= 1;
sqlsrv_rollback($this->_connectionID);
return true;
}
function SetTransactionMode( $transaction_mode )
{
$this->_transmode = $transaction_mode;
if (empty($transaction_mode)) {
$this->Execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
return;
}
if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
$this->Execute("SET TRANSACTION ".$transaction_mode);
}
/*
Usage:
$this->BeginTrans();
$this->RowLock('table1,table2','table1.id=33 and table2.id=table1.id'); # lock row 33 for both tables
# some operation on both tables table1 and table2
$this->CommitTrans();
See http://www.swynk.com/friends/achigrik/SQL70Locks.asp
*/
function RowLock($tables,$where,$col='1 as adodbignore')
{
if ($col == '1 as adodbignore') $col = 'top 1 null as ignore';
if (!$this->transCnt) $this->BeginTrans();
return $this->GetOne("select $col from $tables with (ROWLOCK,HOLDLOCK) where $where");
}
function SelectDB($dbName)
{
$this->database = $dbName;
$this->databaseName = $dbName; # obsolete, retained for compat with older adodb versions
if ($this->_connectionID) {
$rs = $this->Execute('USE '.$dbName);
if($rs) {
return true;
} else return false;
}
else return false;
}
function ErrorMsg()
{
$retErrors = sqlsrv_errors(SQLSRV_ERR_ALL);
if($retErrors != null) {
foreach($retErrors as $arrError) {
$this->_errorMsg .= "SQLState: ".$arrError[ 'SQLSTATE']."\n";
$this->_errorMsg .= "Error Code: ".$arrError[ 'code']."\n";
$this->_errorMsg .= "Message: ".$arrError[ 'message']."\n";
}
}
return $this->_errorMsg;
}
function ErrorNo()
{
$err = sqlsrv_errors(SQLSRV_ERR_ALL);
if ($err && $err[0])
return $err[0]['code'];
else
return 0;
}
// returns true or false
function _connect($argHostname, $argUsername, $argPassword, $argDatabasename)
{
if (!function_exists('sqlsrv_connect'))
{
if ($this->debug)
ADOConnection::outp('Microsoft SQL Server native driver (mssqlnative) not installed');
return null;
}
if (!empty($this->port))
/*
* Port uses a comma
*/
$argHostname .= ",".$this->port;
$connectionInfo = $this->connectionInfo;
$connectionInfo["Database"] = $argDatabasename;
if ((string)$argUsername != '' || (string)$argPassword != '')
{
/*
* If they pass either a userid or password, we assume
* SQL Server authentication
*/
$connectionInfo["UID"] = $argUsername;
$connectionInfo["PWD"] = $argPassword;
if ($this->debug)
ADOConnection::outp('userid or password supplied, attempting connection with SQL Server Authentication');
}
else
{
/*
* If they don't pass either value, we won't add them to the
* connection parameters. This will then force an attempt
* to use windows authentication
*/
if ($this->debug)
ADOConnection::outp('No userid or password supplied, attempting connection with Windows Authentication');
}
/*
* Now merge in the passed connection parameters setting
*/
foreach ($this->connectionParameters as $options)
{
foreach($options as $parameter=>$value)
$connectionInfo[$parameter] = $value;
}
if ($this->debug) ADOConnection::outp("connecting to host: $argHostname params: ".var_export($connectionInfo,true));
if(!($this->_connectionID = @sqlsrv_connect($argHostname,$connectionInfo)))
{
if ($this->debug)
ADOConnection::outp( 'Connection Failed: '.print_r( sqlsrv_errors(), true));
return false;
}
$this->ServerVersion();
return true;
}
// returns true or false
function _pconnect($argHostname, $argUsername, $argPassword, $argDatabasename)
{
//return null;//not implemented. NOTE: Persistent connections have no effect if PHP is used as a CGI program. (FastCGI!)
return $this->_connect($argHostname, $argUsername, $argPassword, $argDatabasename);
}
function Prepare($sql)
{
return $sql; // prepare does not work properly with bind parameters as bind parameters are managed by sqlsrv_prepare!
}
// returns concatenated string
// MSSQL requires integers to be cast as strings
// automatically cast every datatype to VARCHAR(255)
// @author David Rogers (introspectshun)
function Concat()
{
$s = "";
$arr = func_get_args();
// Split single record on commas, if possible
if (sizeof($arr) == 1) {
foreach ($arr as $arg) {
$args = explode(',', $arg);
}
$arr = $args;
}
array_walk(
$arr,
function(&$value, $key) {
$value = "CAST(" . $value . " AS VARCHAR(255))";
}
);
$s = implode('+',$arr);
if (sizeof($arr) > 0) return "$s";
return '';
}
/*
Unfortunately, it appears that mssql cannot handle varbinary > 255 chars
So all your blobs must be of type "image".
Remember to set in php.ini the following...
; Valid range 0 - 2147483647. Default = 4096.
mssql.textlimit = 0 ; zero to pass through
; Valid range 0 - 2147483647. Default = 4096.
mssql.textsize = 0 ; zero to pass through
*/
function UpdateBlob($table,$column,$val,$where,$blobtype='BLOB')
{
if (strtoupper($blobtype) == 'CLOB') {
$sql = "UPDATE $table SET $column='" . $val . "' WHERE $where";
return $this->Execute($sql) != false;
}
$sql = "UPDATE $table SET $column=0x".bin2hex($val)." WHERE $where";
return $this->Execute($sql) != false;
}
/**
* Execute a query.
*
* If executing an INSERT statement and $hasInsertId is true, will set
* $lastInsId.
*
* @param string $sql
* @param array $inputarr
* @return resource|false Query Id if successful, otherwise false
*/
function _query($sql, $inputarr = false)
{
$this->_errorMsg = false;
if (is_array($sql)) {
$sql = $sql[1];
}
// Handle native driver flaw for retrieving the last insert ID
if ($this->hasInsertID) {
// Check if it's an INSERT statement
$retrieveLastInsertID = preg_match(
'/^\W*insert[\s\w()[\]",.]+values\s*\((?:[^;\']|\'\'|(?:(?:\'\')*\'[^\']+\'(?:\'\')*))*;?$/i',
$sql
);
if ($retrieveLastInsertID) {
// Append the identity SQL, so it is executed in the same
// scope as the insert query.
$sql .= '; ' . $this->identitySQL;
}
} else {
$retrieveLastInsertID = false;
}
if ($inputarr) {
// Ensure that the input array is indexed numerically, as required
// by sqlsrv_query(). If param() was used to create portable binds
// then the array might be associative.
$inputarr = array_values($inputarr);
$rez = sqlsrv_query($this->_connectionID, $sql, $inputarr);
} else {
$rez = sqlsrv_query($this->_connectionID, $sql);
}
if ($this->debug) {
ADOConnection::outp("<hr>running query: " . var_export($sql, true)
. "<hr>input array: " . var_export($inputarr, true)
. "<hr>result: " . var_export($rez, true)
);
}
$this->lastInsID = false;
if (!$rez) {
$rez = false;
} elseif ($retrieveLastInsertID) {
// Get the inserted id from the last result
// Note: loop is required as server may return more than one row,
// e.g. if triggers are involved (see #41)
while (sqlsrv_next_result($rez)) {
sqlsrv_fetch($rez);
$this->lastInsID = sqlsrv_get_field($rez, 0, SQLSRV_PHPTYPE_INT);
}
}
return $rez;
}
// returns true or false
function _close()
{
if ($this->transCnt) {
$this->RollbackTrans();
}
if($this->_connectionID) {
$rez = sqlsrv_close($this->_connectionID);
}
$this->_connectionID = false;
return $rez;
}
function MetaIndexes($table,$primary=false, $owner = false)
{
$table = $this->qstr($table);
$sql = "SELECT i.name AS ind_name, C.name AS col_name, USER_NAME(O.uid) AS Owner, c.colid, k.Keyno,
CASE WHEN I.indid BETWEEN 1 AND 254 AND (I.status & 2048 = 2048 OR I.Status = 16402 AND O.XType = 'V') THEN 1 ELSE 0 END AS IsPK,
CASE WHEN I.status & 2 = 2 THEN 1 ELSE 0 END AS IsUnique
FROM dbo.sysobjects o INNER JOIN dbo.sysindexes I ON o.id = i.id
INNER JOIN dbo.sysindexkeys K ON I.id = K.id AND I.Indid = K.Indid
INNER JOIN dbo.syscolumns c ON K.id = C.id AND K.colid = C.Colid
WHERE LEFT(i.name, 8) <> '_WA_Sys_' AND o.status >= 0 AND O.Name LIKE $table
ORDER BY O.name, I.Name, K.keyno";
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== FALSE) {
$savem = $this->SetFetchMode(FALSE);
}
$rs = $this->Execute($sql);
if (isset($savem)) {
$this->SetFetchMode($savem);
}
$ADODB_FETCH_MODE = $save;
if (!is_object($rs)) {
return FALSE;
}
$indexes = array();
while ($row = $rs->FetchRow()) {
if (!$primary && $row[5]) continue;
$indexes[$row[0]]['unique'] = $row[6];
$indexes[$row[0]]['columns'][] = $row[1];
}
return $indexes;
}
public function metaForeignKeys($table, $owner = '', $upper = false, $associative = false)
{
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
$table = $this->qstr(strtoupper($table));
$sql =
"select object_name(constid) as constraint_name,
col_name(fkeyid, fkey) as column_name,
object_name(rkeyid) as referenced_table_name,
col_name(rkeyid, rkey) as referenced_column_name
from sysforeignkeys
where upper(object_name(fkeyid)) = $table
order by constraint_name, referenced_table_name, keyno";
$constraints = $this->GetArray($sql);
$ADODB_FETCH_MODE = $save;
$arr = false;
foreach($constraints as $constr) {
//print_r($constr);
$arr[$constr[0]][$constr[2]][] = $constr[1].'='.$constr[3];
}
if (!$arr) return false;
$arr2 = false;
foreach($arr as $k => $v) {
foreach($v as $a => $b) {
if ($upper) $a = strtoupper($a);
if (is_array($arr2[$a])) { // a previous foreign key was define for this reference table, we merge the new one
$arr2[$a] = array_merge($arr2[$a], $b);
} else {
$arr2[$a] = $b;
}
}
}
return $arr2;
}
//From: Fernando Moreira <FMoreira@imediata.pt>
function MetaDatabases()
{
$this->SelectDB("master");
$rs = $this->Execute($this->metaDatabasesSQL);
$rows = $rs->GetRows();
$ret = array();
for($i=0;$i<count($rows);$i++) {
$ret[] = $rows[$i][0];
}
$this->SelectDB($this->database);
if($ret)
return $ret;
else
return false;
}
// "Stein-Aksel Basma" <basma@accelero.no>
// tested with MSSQL 2000
function MetaPrimaryKeys($table, $owner=false)
{
global $ADODB_FETCH_MODE;
$schema = '';
$this->_findschema($table,$schema);
if (!$schema) $schema = $this->database;
if ($schema) $schema = "and k.table_catalog like '$schema%'";
$sql = "select distinct k.column_name,ordinal_position from information_schema.key_column_usage k,
information_schema.table_constraints tc
where tc.constraint_name = k.constraint_name and tc.constraint_type =
'PRIMARY KEY' and k.table_name = '$table' $schema order by ordinal_position ";
$savem = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
$a = $this->GetCol($sql);
$ADODB_FETCH_MODE = $savem;
if ($a && sizeof($a)>0) return $a;
$false = false;
return $false;
}
function MetaTables($ttype=false,$showSchema=false,$mask=false)
{
if ($mask) {
$save = $this->metaTablesSQL;
$mask = $this->qstr(($mask));
$this->metaTablesSQL .= " AND name like $mask";
}
$ret = ADOConnection::MetaTables($ttype,$showSchema);
if ($mask) {
$this->metaTablesSQL = $save;
}
return $ret;
}
function MetaColumns($table, $upper=true, $schema=false){
/*
* A simple caching mechanism, to be replaced in ADOdb V6
*/
static $cached_columns = array();
if ($this->cachedSchemaFlush)
$cached_columns = array();
if (array_key_exists($table,$cached_columns)){
return $cached_columns[$table];
}
$this->_findschema($table,$schema);
if ($schema) {
$dbName = $this->database;
$this->SelectDB($schema);
}
global $ADODB_FETCH_MODE;
$save = $ADODB_FETCH_MODE;
$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
$rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
if ($schema) {
$this->SelectDB($dbName);
}
if (isset($savem)) $this->SetFetchMode($savem);
$ADODB_FETCH_MODE = $save;
if (!is_object($rs)) {
$false = false;
return $false;
}
$retarr = array();
while (!$rs->EOF){
$fld = new ADOFieldObject();
if (array_key_exists(0,$rs->fields)) {
$fld->name = $rs->fields[0];
$fld->type = $rs->fields[1];
$fld->max_length = $rs->fields[2];
$fld->precision = $rs->fields[3];
$fld->scale = $rs->fields[4];
$fld->not_null =!$rs->fields[5];
$fld->has_default = $rs->fields[6];
$fld->xtype = $rs->fields[7];
$fld->type_length = $rs->fields[8];
$fld->auto_increment= $rs->fields[9];
} else {
$fld->name = $rs->fields['name'];
$fld->type = $rs->fields['type'];
$fld->max_length = $rs->fields['length'];
$fld->precision = $rs->fields['precision'];
$fld->scale = $rs->fields['scale'];
$fld->not_null =!$rs->fields['nullable'];
$fld->has_default = $rs->fields['default_value'];
$fld->xtype = $rs->fields['xtype'];
$fld->type_length = $rs->fields['type_length'];
$fld->auto_increment= $rs->fields['is_identity'];
}
if ($save == ADODB_FETCH_NUM)
$retarr[] = $fld;
else
$retarr[strtoupper($fld->name)] = $fld;
$rs->MoveNext();
}
$rs->Close();
$cached_columns[$table] = $retarr;
return $retarr;
}
/**
* Returns a substring of a varchar type field
*
* The SQL server version varies because the length is mandatory, so
* we append a reasonable string length
*
* @param string $fld The field to sub-string
* @param int $start The start point
* @param int $length An optional length
*
* @return The SQL text
*/
function substr($fld,$start,$length=0)
{
if ($length == 0)
/*
* The length available to varchar is 2GB, but that makes no
* sense in a substring, so I'm going to arbitrarily limit
* the length to 1K, but you could change it if you want
*/
$length = 1024;
$text = "SUBSTRING($fld,$start,$length)";
return $text;
}
/**
* Returns the maximum size of a MetaType C field. Because of the
* database design, SQL Server places no limits on the size of data inserted
* Although the actual limit is 2^31-1 bytes.
*
* @return int
*/
function charMax()
{
return ADODB_STRINGMAX_NOLIMIT;
}
/**
* Returns the maximum size of a MetaType X field. Because of the
* database design, SQL Server places no limits on the size of data inserted
* Although the actual limit is 2^31-1 bytes.
*
* @return int
*/
function textMax()
{
return ADODB_STRINGMAX_NOLIMIT;
}
/**
* Lists procedures, functions and methods in an array.
*
* @param string $procedureNamePattern (optional)
* @param string $catalog (optional)
* @param string $schemaPattern (optional)
* @return array of stored objects in current database.
*
*/
public function metaProcedures($procedureNamePattern = null, $catalog = null, $schemaPattern = null)
{
$metaProcedures = array();
$procedureSQL = '';
$catalogSQL = '';
$schemaSQL = '';
if ($procedureNamePattern)
$procedureSQL = "AND ROUTINE_NAME LIKE " . strtoupper($this->qstr($procedureNamePattern));
if ($catalog)
$catalogSQL = "AND SPECIFIC_SCHEMA=" . strtoupper($this->qstr($catalog));
if ($schemaPattern)
$schemaSQL = "AND ROUTINE_SCHEMA LIKE {$this->qstr($schemaPattern)}";
$fields = " ROUTINE_NAME,ROUTINE_TYPE,ROUTINE_SCHEMA,ROUTINE_CATALOG";
$SQL = "SELECT $fields
FROM {$this->database}.information_schema.routines
WHERE 1=1
$procedureSQL
$catalogSQL
$schemaSQL
ORDER BY ROUTINE_NAME
";
$result = $this->execute($SQL);
if (!$result)
return false;
while ($r = $result->fetchRow()){
if (!isset($r[0]))
/*
* Convert to numeric
*/
$r = array_values($r);
$procedureName = $r[0];
$schemaName = $r[2];
$routineCatalog= $r[3];
$metaProcedures[$procedureName] = array('type'=> $r[1],
'catalog' => $routineCatalog,
'schema' => $schemaName,
'remarks' => '',
);
}
return $metaProcedures;
}
/**
* An SQL Statement that adds a specific number of
* days or part to local datetime
*
* @param float $dayFraction
* @param string $date
*
* @return string
*/
public function offsetDate($dayFraction, $date = false)
{
if (!$date)
/*
* Use GETDATE() via systTimestamp;
*/
$date = $this->sysTimeStamp;
/*
* seconds, number of seconds, date base
*/
$dateFormat = "DATEADD(s, %s, %s)";
/*
* Adjust the offset back to seconds
*/
$fraction = $dayFraction * 24 * 3600;
return sprintf($dateFormat,$fraction,$date);
}
}
/*--------------------------------------------------------------------------------------
Class Name: Recordset
--------------------------------------------------------------------------------------*/
class ADORecordset_mssqlnative extends ADORecordSet {
var $databaseType = "mssqlnative";
var $canSeek = false;
var $fieldOffset = 0;
// _mths works only in non-localised system
/**
* @var bool True if we have retrieved the fields metadata
*/
private $fieldObjectsRetrieved = false;
/*
* Cross-reference the objects by name for easy access
*/
private $fieldObjectsIndex = array();
/*
* Cross references the dateTime objects for faster decoding
*/
private $dateTimeObjects = array();
/*
* flags that we have dateTimeObjects to handle
*/
private $hasDateTimeObjects = false;
/*
* This is cross reference between how the types are stored
* in SQL Server and their english-language description
* -154 is a time field, see #432
*/
private $_typeConversion = array(
-155 => 'datetimeoffset',
-154 => 'char',
-152 => 'xml',
-151 => 'udt',
-11 => 'uniqueidentifier',
-10 => 'ntext',
-9 => 'nvarchar',
-8 => 'nchar',
-7 => 'bit',
-6 => 'tinyint',
-5 => 'bigint',
-4 => 'image',
-3 => 'varbinary',
-2 => 'timestamp',
-1 => 'text',
1 => 'char',
2 => 'numeric',
3 => 'decimal',
4 => 'int',
5 => 'smallint',
6 => 'float',
7 => 'real',
12 => 'varchar',
91 => 'date',
93 => 'datetime'
);
function __construct($id,$mode=false)
{
if ($mode === false) {
global $ADODB_FETCH_MODE;
$mode = $ADODB_FETCH_MODE;
}
$this->fetchMode = $mode;
parent::__construct($id);
}
function _initrs()
{
$this->_numOfRows = -1;//not supported
// Cache the metadata right now
$this->_fetchField();
}
//Contributed by "Sven Axelsson" <sven.axelsson@bokochwebb.se>
// get next resultset - requires PHP 4.0.5 or later
function NextRecordSet()
{
if (!sqlsrv_next_result($this->_queryID)) return false;
$this->_inited = false;
$this->bind = false;
$this->_currentRow = -1;
$this->Init();
return true;
}
/* Use associative array to get fields array */
function Fields($colname)
{
if (!is_array($this->fields))
/*
* Too early
*/
return;
if ($this->fetchMode != ADODB_FETCH_NUM)
return $this->fields[$colname];
if (!$this->bind) {
$this->bind = array();
for ($i=0; $i < $this->_numOfFields; $i++) {
$o = $this->FetchField($i);
$this->bind[strtoupper($o->name)] = $i;
}
}
return $this->fields[$this->bind[strtoupper($colname)]];
}
/**
* Returns: an object containing field information.
*
* Get column information in the Recordset object. fetchField()
* can be used in order to obtain information about fields in a
* certain query result. If the field offset isn't specified,
* the next field that wasn't yet retrieved by fetchField()
* is retrieved.
*
* @param int $fieldOffset (optional default=-1 for all
* @return mixed an ADOFieldObject, or array of objects
*/
private function _fetchField($fieldOffset = -1)
{
if ($this->fieldObjectsRetrieved) {
if ($this->fieldObjectsCache) {
// Already got the information
if ($fieldOffset == -1) {
return $this->fieldObjectsCache;
} else {
return $this->fieldObjectsCache[$fieldOffset];
}
} else {
// No metadata available
return false;
}
}
$this->fieldObjectsRetrieved = true;
/*
* Retrieve all metadata in one go. This is always returned as a
* numeric array.
*/
$fieldMetaData = sqlsrv_field_metadata($this->_queryID);
if (!$fieldMetaData) {
// Not a statement that gives us metaData
return false;
}
$this->_numOfFields = count($fieldMetaData);
foreach ($fieldMetaData as $key=>$value) {
$fld = new ADOFieldObject;
// Caution - keys are case-sensitive, must respect casing of values
$fld->name = $value['Name'];
$fld->max_length = $value['Size'];
$fld->column_source = $value['Name'];
$fld->type = $this->_typeConversion[$value['Type']];
$this->fieldObjectsCache[$key] = $fld;
$this->fieldObjectsIndex[$fld->name] = $key;
}
if ($fieldOffset == -1) {
return $this->fieldObjectsCache;
}
return $this->fieldObjectsCache[$fieldOffset];
}
/*
* Fetchfield copies the oracle method, it loads the field information
* into the _fieldobjs array once, to save multiple calls to the
* sqlsrv_field_metadata function
*
* @param int $fieldOffset (optional)
*
* @return adoFieldObject
*
* @author KM Newnham
* @date 02/20/2013
*/
function fetchField($fieldOffset = -1)
{
return $this->fieldObjectsCache[$fieldOffset];
}
function _seek($row)
{
return false;//There is no support for cursors in the driver at this time. All data is returned via forward-only streams.
}
// speedup
function MoveNext()
{
if ($this->EOF)
return false;
$this->_currentRow++;
if ($this->_fetch())
return true;
$this->EOF = true;
return false;
}
function _fetch($ignore_fields=false)
{
if ($this->fetchMode & ADODB_FETCH_ASSOC) {
if ($this->fetchMode & ADODB_FETCH_NUM)
$this->fields = @sqlsrv_fetch_array($this->_queryID,SQLSRV_FETCH_BOTH);
else
$this->fields = @sqlsrv_fetch_array($this->_queryID,SQLSRV_FETCH_ASSOC);
if (is_array($this->fields))
{
if (ADODB_ASSOC_CASE == ADODB_ASSOC_CASE_LOWER)
$this->fields = array_change_key_case($this->fields,CASE_LOWER);
else if (ADODB_ASSOC_CASE == ADODB_ASSOC_CASE_UPPER)
$this->fields = array_change_key_case($this->fields,CASE_UPPER);
}
}
else
$this->fields = @sqlsrv_fetch_array($this->_queryID,SQLSRV_FETCH_NUMERIC);
if (!$this->fields)
return false;
return $this->fields;
}
/**
* close() only needs to be called if you are worried about using too much
* memory while your script is running. All associated result memory for
* the specified result identifier will automatically be freed.
*
* @return bool tru if we succeeded in closing down
*/
function _close()
{
/*
* If we are closing down a failed query, collect any
* error messages. This is a hack fix to the "close too early"
* problem so this might go away later
*/
$this->connection->errorMsg();
if(is_resource($this->_queryID)) {
$rez = sqlsrv_free_stmt($this->_queryID);
$this->_queryID = false;
return $rez;
}
return true;
}
}
class ADORecordSet_array_mssqlnative extends ADORecordSet_array {}
/*
Code Example 1:
select object_name(constid) as constraint_name,
object_name(fkeyid) as table_name,
col_name(fkeyid, fkey) as column_name,
object_name(rkeyid) as referenced_table_name,
col_name(rkeyid, rkey) as referenced_column_name
from sysforeignkeys
where object_name(fkeyid) = x
order by constraint_name, table_name, referenced_table_name, keyno
Code Example 2:
select constraint_name,
column_name,
ordinal_position
from information_schema.key_column_usage
where constraint_catalog = db_name()
and table_name = x
order by constraint_name, ordinal_position
http://www.databasejournal.com/scripts/article.php/1440551
*/
Mini Shell