1<?php
2/*
3@version   v5.21.0  2021-02-27
4@copyright (c) 2000-2013 John Lim (jlim#natsoft.com). All rights reserved.
5@copyright (c) 2014      Damien Regad, Mark Newnham and the ADOdb community
6  Released under both BSD license and Lesser GPL library license.
7  Whenever there is any discrepancy between the two licenses,
8  the BSD license will take precedence.
9Set tabs to 4 for best viewing.
10
11  Latest version is available at https://adodb.org/
12
13  MSSQL support via ODBC. Requires ODBC. Works on Windows and Unix.
14  For Unix configuration, see http://phpbuilder.com/columns/alberto20000919.php3
15*/
16
17// security - hide paths
18if (!defined('ADODB_DIR')) die();
19
20if (!defined('_ADODB_ODBC_LAYER')) {
21	include_once(ADODB_DIR."/drivers/adodb-odbc.inc.php");
22}
23
24
25class  ADODB_odbc_mssql extends ADODB_odbc {
26	var $databaseType = 'odbc_mssql';
27	var $fmtDate = "'Y-m-d'";
28	var $fmtTimeStamp = "'Y-m-d\TH:i:s'";
29	var $_bindInputArray = true;
30	var $metaDatabasesSQL = "select name from sysdatabases where name <> 'master'";
31	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'))";
32	var $metaColumnsSQL = # xtype==61 is datetime
33	"select c.name,t.name,c.length,c.isnullable, c.status,
34		(case when c.xusertype=61 then 0 else c.xprec end),
35		(case when c.xusertype=61 then 0 else c.xscale end)
36		from syscolumns c join systypes t on t.xusertype=c.xusertype join sysobjects o on o.id=c.id where o.name='%s'";
37	var $hasTop = 'top';		// support mssql/interbase SELECT TOP 10 * FROM TABLE
38	var $sysDate = 'GetDate()';
39	var $sysTimeStamp = 'GetDate()';
40	var $leftOuter = '*=';
41	var $rightOuter = '=*';
42	var $substr = 'substring';
43	var $length = 'len';
44	var $ansiOuter = true; // for mssql7 or later
45	var $identitySQL = 'select SCOPE_IDENTITY()'; // 'select SCOPE_IDENTITY'; # for mssql 2000
46	var $hasInsertID = true;
47	var $connectStmt = 'SET CONCAT_NULL_YIELDS_NULL OFF'; # When SET CONCAT_NULL_YIELDS_NULL is ON,
48														  # concatenating a null value with a string yields a NULL result
49
50	// crashes php...
51	function ServerInfo()
52	{
53	global $ADODB_FETCH_MODE;
54		$save = $ADODB_FETCH_MODE;
55		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
56		$row = $this->GetRow("execute sp_server_info 2");
57		$ADODB_FETCH_MODE = $save;
58		if (!is_array($row)) return false;
59		$arr['description'] = $row[2];
60		$arr['version'] = ADOConnection::_findvers($arr['description']);
61		return $arr;
62	}
63
64	function IfNull( $field, $ifNull )
65	{
66		return " ISNULL($field, $ifNull) "; // if MS SQL Server
67	}
68
69	function _insertid()
70	{
71	// SCOPE_IDENTITY()
72	// Returns the last IDENTITY value inserted into an IDENTITY column in
73	// the same scope. A scope is a module -- a stored procedure, trigger,
74	// function, or batch. Thus, two statements are in the same scope if
75	// they are in the same stored procedure, function, or batch.
76			return $this->GetOne($this->identitySQL);
77	}
78
79
80	function MetaForeignKeys($table, $owner=false, $upper=false)
81	{
82	global $ADODB_FETCH_MODE;
83
84		$save = $ADODB_FETCH_MODE;
85		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
86		$table = $this->qstr(strtoupper($table));
87
88		$sql =
89"select object_name(constid) as constraint_name,
90	col_name(fkeyid, fkey) as column_name,
91	object_name(rkeyid) as referenced_table_name,
92   	col_name(rkeyid, rkey) as referenced_column_name
93from sysforeignkeys
94where upper(object_name(fkeyid)) = $table
95order by constraint_name, referenced_table_name, keyno";
96
97		$constraints = $this->GetArray($sql);
98
99		$ADODB_FETCH_MODE = $save;
100
101		$arr = false;
102		foreach($constraints as $constr) {
103			//print_r($constr);
104			$arr[$constr[0]][$constr[2]][] = $constr[1].'='.$constr[3];
105		}
106		if (!$arr) return false;
107
108		$arr2 = false;
109
110		foreach($arr as $k => $v) {
111			foreach($v as $a => $b) {
112				if ($upper) $a = strtoupper($a);
113				$arr2[$a] = $b;
114			}
115		}
116		return $arr2;
117	}
118
119	function MetaTables($ttype=false,$showSchema=false,$mask=false)
120	{
121		if ($mask) {//$this->debug=1;
122			$save = $this->metaTablesSQL;
123			$mask = $this->qstr($mask);
124			$this->metaTablesSQL .= " AND name like $mask";
125		}
126		$ret = ADOConnection::MetaTables($ttype,$showSchema);
127
128		if ($mask) {
129			$this->metaTablesSQL = $save;
130		}
131		return $ret;
132	}
133
134	function MetaColumns($table, $normalize=true)
135	{
136
137		$this->_findschema($table,$schema);
138		if ($schema) {
139			$dbName = $this->database;
140			$this->SelectDB($schema);
141		}
142		global $ADODB_FETCH_MODE;
143		$save = $ADODB_FETCH_MODE;
144		$ADODB_FETCH_MODE = ADODB_FETCH_NUM;
145
146		if ($this->fetchMode !== false) $savem = $this->SetFetchMode(false);
147		$rs = $this->Execute(sprintf($this->metaColumnsSQL,$table));
148
149		if ($schema) {
150			$this->SelectDB($dbName);
151		}
152
153		if (isset($savem)) $this->SetFetchMode($savem);
154		$ADODB_FETCH_MODE = $save;
155		if (!is_object($rs)) {
156			$false = false;
157			return $false;
158		}
159
160		$retarr = array();
161		while (!$rs->EOF){
162			$fld = new ADOFieldObject();
163			$fld->name = $rs->fields[0];
164			$fld->type = $rs->fields[1];
165
166			$fld->not_null = (!$rs->fields[3]);
167			$fld->auto_increment = ($rs->fields[4] == 128);		// sys.syscolumns status field. 0x80 = 128 ref: http://msdn.microsoft.com/en-us/library/ms186816.aspx
168
169
170			if (isset($rs->fields[5]) && $rs->fields[5]) {
171				if ($rs->fields[5]>0) $fld->max_length = $rs->fields[5];
172				$fld->scale = $rs->fields[6];
173				if ($fld->scale>0) $fld->max_length += 1;
174			} else
175				$fld->max_length = $rs->fields[2];
176
177
178			if ($save == ADODB_FETCH_NUM) {
179				$retarr[] = $fld;
180			} else {
181				$retarr[strtoupper($fld->name)] = $fld;
182			}
183				$rs->MoveNext();
184			}
185
186			$rs->Close();
187			return $retarr;
188
189	}
190
191
192	function MetaIndexes($table,$primary=false, $owner=false)
193	{
194		$table = $this->qstr($table);
195
196		$sql = "SELECT i.name AS ind_name, C.name AS col_name, USER_NAME(O.uid) AS Owner, c.colid, k.Keyno,
197			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,
198			CASE WHEN I.status & 2 = 2 THEN 1 ELSE 0 END AS IsUnique
199			FROM dbo.sysobjects o INNER JOIN dbo.sysindexes I ON o.id = i.id
200			INNER JOIN dbo.sysindexkeys K ON I.id = K.id AND I.Indid = K.Indid
201			INNER JOIN dbo.syscolumns c ON K.id = C.id AND K.colid = C.Colid
202			WHERE LEFT(i.name, 8) <> '_WA_Sys_' AND o.status >= 0 AND O.Name LIKE $table
203			ORDER BY O.name, I.Name, K.keyno";
204
205		global $ADODB_FETCH_MODE;
206		$save = $ADODB_FETCH_MODE;
207        $ADODB_FETCH_MODE = ADODB_FETCH_NUM;
208        if ($this->fetchMode !== FALSE) {
209        	$savem = $this->SetFetchMode(FALSE);
210        }
211
212        $rs = $this->Execute($sql);
213        if (isset($savem)) {
214        	$this->SetFetchMode($savem);
215        }
216        $ADODB_FETCH_MODE = $save;
217
218        if (!is_object($rs)) {
219        	return FALSE;
220        }
221
222		$indexes = array();
223		while ($row = $rs->FetchRow()) {
224			if (!$primary && $row[5]) continue;
225
226            $indexes[$row[0]]['unique'] = $row[6];
227            $indexes[$row[0]]['columns'][] = $row[1];
228    	}
229        return $indexes;
230	}
231
232	function _query($sql,$inputarr=false)
233	{
234		if (is_string($sql)) $sql = str_replace('||','+',$sql);
235		return ADODB_odbc::_query($sql,$inputarr);
236	}
237
238	function SetTransactionMode( $transaction_mode )
239	{
240		$this->_transmode  = $transaction_mode;
241		if (empty($transaction_mode)) {
242			$this->Execute('SET TRANSACTION ISOLATION LEVEL READ COMMITTED');
243			return;
244		}
245		if (!stristr($transaction_mode,'isolation')) $transaction_mode = 'ISOLATION LEVEL '.$transaction_mode;
246		$this->Execute("SET TRANSACTION ".$transaction_mode);
247	}
248
249	// "Stein-Aksel Basma" <basma@accelero.no>
250	// tested with MSSQL 2000
251	function MetaPrimaryKeys($table, $owner = false)
252	{
253	global $ADODB_FETCH_MODE;
254
255		$schema = '';
256		$this->_findschema($table,$schema);
257		//if (!$schema) $schema = $this->database;
258		if ($schema) $schema = "and k.table_catalog like '$schema%'";
259
260		$sql = "select distinct k.column_name,ordinal_position from information_schema.key_column_usage k,
261		information_schema.table_constraints tc
262		where tc.constraint_name = k.constraint_name and tc.constraint_type =
263		'PRIMARY KEY' and k.table_name = '$table' $schema order by ordinal_position ";
264
265		$savem = $ADODB_FETCH_MODE;
266		$ADODB_FETCH_MODE = ADODB_FETCH_ASSOC;
267		$a = $this->GetCol($sql);
268		$ADODB_FETCH_MODE = $savem;
269
270		if ($a && sizeof($a)>0) return $a;
271		$false = false;
272		return $false;
273	}
274
275	function SelectLimit($sql,$nrows=-1,$offset=-1, $inputarr=false,$secs2cache=0)
276	{
277		$nrows = (int) $nrows;
278		$offset = (int) $offset;
279		if ($nrows > 0 && $offset <= 0) {
280			$sql = preg_replace(
281				'/(^\s*select\s+(distinctrow|distinct)?)/i','\\1 '.$this->hasTop." $nrows ",$sql);
282			$rs = $this->Execute($sql,$inputarr);
283		} else
284			$rs = ADOConnection::SelectLimit($sql,$nrows,$offset,$inputarr,$secs2cache);
285
286		return $rs;
287	}
288
289	// Format date column in sql string given an input format that understands Y M D
290	function SQLDate($fmt, $col=false)
291	{
292		if (!$col) $col = $this->sysTimeStamp;
293		$s = '';
294
295		$len = strlen($fmt);
296		for ($i=0; $i < $len; $i++) {
297			if ($s) $s .= '+';
298			$ch = $fmt[$i];
299			switch($ch) {
300			case 'Y':
301			case 'y':
302				$s .= "datename(yyyy,$col)";
303				break;
304			case 'M':
305				$s .= "convert(char(3),$col,0)";
306				break;
307			case 'm':
308				$s .= "replace(str(month($col),2),' ','0')";
309				break;
310			case 'Q':
311			case 'q':
312				$s .= "datename(quarter,$col)";
313				break;
314			case 'D':
315			case 'd':
316				$s .= "replace(str(day($col),2),' ','0')";
317				break;
318			case 'h':
319				$s .= "substring(convert(char(14),$col,0),13,2)";
320				break;
321
322			case 'H':
323				$s .= "replace(str(datepart(hh,$col),2),' ','0')";
324				break;
325
326			case 'i':
327				$s .= "replace(str(datepart(mi,$col),2),' ','0')";
328				break;
329			case 's':
330				$s .= "replace(str(datepart(ss,$col),2),' ','0')";
331				break;
332			case 'a':
333			case 'A':
334				$s .= "substring(convert(char(19),$col,0),18,2)";
335				break;
336
337			default:
338				if ($ch == '\\') {
339					$i++;
340					$ch = substr($fmt,$i,1);
341				}
342				$s .= $this->qstr($ch);
343				break;
344			}
345		}
346		return $s;
347	}
348
349	/**
350	* Returns a substring of a varchar type field
351	*
352	* The SQL server version varies because the length is mandatory, so
353	* we append a reasonable string length
354	*
355	* @param	string	$fld	The field to sub-string
356	* @param	int		$start	The start point
357	* @param	int		$length	An optional length
358	*
359	* @return	The SQL text
360	*/
361	function substr($fld,$start,$length=0)
362	{
363		if ($length == 0)
364			/*
365		     * The length available to varchar is 2GB, but that makes no
366			 * sense in a substring, so I'm going to arbitrarily limit
367			 * the length to 1K, but you could change it if you want
368			 */
369			$length = 1024;
370
371		$text = "SUBSTRING($fld,$start,$length)";
372		return $text;
373	}
374
375	/**
376	* Returns the maximum size of a MetaType C field. Because of the
377	* database design, SQL Server places no limits on the size of data inserted
378	* Although the actual limit is 2^31-1 bytes.
379	*
380	* @return int
381	*/
382	function charMax()
383	{
384		return ADODB_STRINGMAX_NOLIMIT;
385	}
386
387	/**
388	* Returns the maximum size of a MetaType X field. Because of the
389	* database design, SQL Server places no limits on the size of data inserted
390	* Although the actual limit is 2^31-1 bytes.
391	*
392	* @return int
393	*/
394	function textMax()
395	{
396		return ADODB_STRINGMAX_NOLIMIT;
397	}
398
399	// returns concatenated string
400	// MSSQL requires integers to be cast as strings
401	// automatically cast every datatype to VARCHAR(255)
402	// @author David Rogers (introspectshun)
403	function Concat()
404	{
405		$s = "";
406		$arr = func_get_args();
407
408		// Split single record on commas, if possible
409		if (sizeof($arr) == 1) {
410			foreach ($arr as $arg) {
411				$args = explode(',', $arg);
412			}
413			$arr = $args;
414		}
415
416		array_walk(
417			$arr,
418			function(&$value, $key) {
419				$value = "CAST(" . $value . " AS VARCHAR(255))";
420			}
421		);
422		$s = implode('+',$arr);
423		if (sizeof($arr) > 0) return "$s";
424
425		return '';
426	}
427
428}
429
430class  ADORecordSet_odbc_mssql extends ADORecordSet_odbc {
431
432	var $databaseType = 'odbc_mssql';
433
434}
435