存储过程不返回数据

Question

我正在将脚本从(已停产的)Windows服务器转移到我们的Linux服务器.我需要传输的脚本之一是与MSSQL-server 的连接.

建立了与服务器的连接,我可以从任何表中获取"常规"数据,但是当我执行存储过程时,我没有收到任何所需的数据.该过程只false在执行时返回.

测试准备好的错误语句$stmt->errorInfo()没有向我显示任何相关信息,它只返回错误代码00000,这应该表明一切(应该)正常工作.

Array
(
    [0] => 00000
    [1] => 0
    [2] => (null) [0] (severity 0) [(null)]
    [3] => 0
    [4] => 0
)

---

PHP

$con = new \PDO('dblib:charset=UTF-8;host=freedts;dbname=database', 'user', 'password');
/** ------------------------------------------------------**/
$sql = 'SELECT * FROM prgroepen';
$stmt = $con->prepare($sql);
if ($stmt) {
    try {
        $stmt->execute();
        $data = $stmt->fetch(\PDO::FETCH_ASSOC);
        if ($data) echo '<pre>'.print_r($data, true).'</pre>';
        else var_dump($data);

    }catch(\Exception $e) {
        echo $e->getMessage();
    }
}

/** ------------------------------------------------------**/
$SP = <<<SQL
    DECLARE @return_value int,
            @soort nvarchar(1),
            @dagen money

    EXEC    @return_value = [dbo].[web_voorraadstatus] @produkt = N'ABEC24_9002', @aantal = 1, @soort = @soort OUTPUT, @dagen = @dagen OUTPUT
    SELECT  @soort as N'@soort', @dagen as N'@dagen'
SQL;

$stmt = $con->prepare($SP);
if ($stmt) {
    try {
        $stmt->execute();
        $data = $stmt->fetch(\PDO::FETCH_ASSOC);
        if ($data) echo '<pre>'.print_r($data, true).'</pre>';
        else var_dump($data);

    }catch(\Exception $e) {
        echo $e->getMessage();
    }
}

---

产量

Array
(
    [kode] => A
    [omschrijving] => ACCESSOIRE DISPLAYS
    [aeenheid] => ST
    [agb] => 604006
    [veenheid] => ST
    [vgb] => 700011
    [coefaank] => 
    [coefverk] => 
    [internet] => 1
    [foto] => #\\serverpc\fws$\GROEPEN\A.jpg#
    [vader] => 
    [produkt_niveau] => 0
    [bs_kode] => 
    [bs_vader] => 
    [web_volgorde] => 6
    [pdfcataloog] => 
)

bool(false) 

---

我也尝试以不同的方式打电话给SP,但也无济于事.完全相同的代码在Windows服务器上运行完美,唯一的区别是Windows服务器使用sqlsrv-driver

/** ============================== **/
/*  @produkt as nvarchar(15),
/*  @aantal as money,
/*  @soort as nvarchar(1) output,
/*  @dagen as money output
/** ============================== **/
$stmt = $con->prepare('execute web_voorraadstatus ?, ?, ?, ?');

$stmt->bindParam(1, $produkt, PDO::PARAM_STR);
$stmt->bindParam(2, $aantal, PDO::PARAM_STR);
$stmt->bindParam(3, $soort, PDO::PARAM_STR, 1);
$stmt->bindParam(4, $dagen, PDO::PARAM_STR, 10);

var_dump($stmt->execute()); # true
var_dump($soort, $dagen);   # NULL, NULL

---

那么dblib实际上能够执行存储过程并检索它返回的数据吗？

注意:客户端字符集已UTF-8在FreeDTS配置文件中设置

---

这是freeDTS日志的一部分,似乎我从MSSQL-server 接收数据就好了？

dblib.c:4639:dbsqlok(0x7fcfd8acc530)
dblib.c:4669:dbsqlok() not done, calling tds_process_tokens()
token.c:540:tds_process_tokens(0x7fcfd78d7bd0, 0x7ffe281bec38, 0x7ffe281bec3c, 0x6914)
util.c:156:Changed query state from PENDING to READING
net.c:555:Received header
0000 04 01 00 5c 00 37 01 00-                        |...\.7..|

net.c:609:Received packet
0000 04 01 00 5c 00 37 01 00-79 00 00 00 00 fe 01 00 |...\.7.. y.......|
0010 e0 00 00 00 00 00 81 02-00 00 00 21 00 e7 02 00 |........ ...!....|
0020 09 04 d0 00 34 06 40 00-73 00 6f 00 6f 00 72 00 |....4.@. s.o.o.r.|
0030 74 00 00 00 21 00 6e 08-06 40 00 64 00 61 00 67 |t...!.n. .@.d.a.g|
0040 00 65 00 6e 00 d1 02 00-56 00 08 00 00 00 00 90 |.e.n.... V.......|
0050 d0 03 00 fd 10 00 c1 00-01 00 00 00             |........ ....|

Answer 1

我可能是错的，但我认为这是 DBLIB 和 FreeTDS 的标准行为，因为它们每个连接规则只有一个语句。

要解决为每个语句打开连接对象的问题 - 确保在每次获取后关闭游标。

$stmt->closeCursor();

Windows 上的 sqlsrv 没有此行为，因此跨平台的结果不同。