php - How to bind ISO8601 TSQL DATETIME parameter with PDO?

Question

It seems that PDO has a problem with ISO 8601 formatted timestamps.

I'm connecting from 64-bit Ubuntu 16.04 running PHP 7.0.8 using the Microsoft? ODBC Driver 13 (Preview) for SQL Server?

Here's my simple table:

CREATE TABLE dtest (
    "stamp" DATETIME
);

Works:

$pdoDB = new PDO('odbc:Driver=ODBC Driver 13 for SQL Server;
  Server='.DATABASE_SERVER.';
  Database='.DATABASE_NAME,
  DATABASE_USERNAME,
  DATABASE_PASSWORD
);
$pdoDB->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );

$sql = "INSERT INTO dtest (stamp) VALUES ('2011-03-15T10:23:01')";
$stmt = $pdoDB->prepare($sql);
$params = [];
$stmt->execute($params);

Does not work:

$sql = "INSERT INTO dtest (stamp) VALUES (?)";
$stmt = $pdoDB->prepare($sql);
$params = ['2011-03-15T10:23:01'];
$stmt->execute($params);

Fatal error: Uncaught PDOException: SQLSTATE[22018]: Invalid character value for cast specification: 0 [Microsoft][ODBC Driver 13 for SQL Server]Invalid character value for cast specification (SQLExecute[0] at /build/php7.0-lPMnpS/php7.0-7.0.8/ext/pdo_odbc/odbc_stmt.c:260)

This works if I delete the T so '2011-03-15T10:23:01' becomes '2011-03-15 10:23:01'

$sql = "INSERT INTO dtest (stamp) VALUES (?)";
$stmt = $pdoDB->prepare($sql);
$params = ['2011-03-15 10:23:01'];
$stmt->execute($params);

But I'm writing a script that runs nightly on about 2 million records, so I'd really rather not bear the overhead of running millions of str_replace('T', ' ', $param)

I've also tried using bindParam, but it gives the same error:

$sql  = "INSERT INTO dtest (stamp) VALUES (:tdate)";
$stmt = $pdoDB->prepare($sql);
$date = '2011-03-15T10:23:01';
$stmt->bindParam(':tdate',$date,PDO::PARAM_STR);
$stmt->execute();

Is there anyway to bind and execute this parameter as is? I'm a little dubious of the error message because it appears to be coming from SQL Server as if PDO did its job fine, but that doesn't make sense since it's able to handle the type conversion without parameterization.

---

I've also tried SQL conversion:

Works:

$sql = "INSERT INTO dtest (stamp) VALUES (CONVERT(DATETIME, '2011-03-15T10:23:02', 126))";
$stmt = $pdoDB->prepare($sql);
$params = [];
$stmt->execute($params);

Does not Work:

$sql = "INSERT INTO dtest (stamp) VALUES (CONVERT(DATETIME, ?, 126))";
$stmt = $pdoDB->prepare($sql);
$params = ['2011-03-15T10:23:02'];
$stmt->execute($params);

Answer 1

You will need to use SQL Server's built-in convert() function and specify the format (126) which you are giving it:

$sql = "INSERT INTO dtest (stamp) VALUES (CONVERT(DATETIME, '2011-03-15T10:23:01', 126))";

The documentation mentions :mmm at the end of your string so you might need to manually add :000 at the end of your date string for this to work.