No results come back when adding temptable and querying it in SQLSRV - php

Question

I am trying to create a temptable and do some calculations that populates the temptable and finally get the results from the created temp table. But so far I have been unsuccessful. My query is a little bit more involved but here is the thing that I am trying to do. This code assumes we have database connection set up with codeigniter.
-- This generate no results i.e. Array ()
$sql = "CREATE TABLE #output(name varchar NULL, id int NULL);
insert into #output (name,id) VALUES('sam',5)
SELECT * FROM #output";
$res = $this->db->query($sql);
--Also tried this and returns nothing
$queryList = [
'sql1' => "IF OBJECT_ID('tempdb.dbo.#output', 'U') IS NOT NULL DROP TABLE #output;",
'sql2' => "CREATE TABLE #output(name varchar NULL, id int NULL);",
'sql3' => "insert into #output (name,id) VALUES('sam',5)",
'sql4' => "SELECT * FROM #output"
];
$result = array();
foreach($queryList as $key => $value){
$result[$key] = $this->db->query($value, FALSE, TRUE);
}
These two were written to use codeigniter db drivers. None of the above queires even resulted in #output temptable in the tempdb of the database.
I also tried using sqlsrv_query directly, this one at least created the #output temptable but did not give me any results back.
-- Created the #output temptable but didn't give me back the data inserted
$conn = sqlsrv_connect( $serverName, $connectionInfo);
if( $conn ) {
echo "Connection established.<br />";
$sql = "CREATE TABLE #output(name varchar NULL, id int NULL);
insert into #output (name,id) VALUES('sam',5)
SELECT * FROM #output
--DROP TABLE #output";
$stm = sqlsrv_query($conn, $sql,[]);
while( $obj = sqlsrv_fetch_object( $stm )) {
echo $obj->name . '<br />';
//print_r($obj);
}
I have been trying a lot of scenarios but couldn't figure out what is wrong with my code. Oh BTW I also tried codeigniter trans_start() and end and added every query as a separate query but that didn't work out either. I couldn't think or search anything else and so here is my request for a help.
Here is my environment:
SQLSRV 5.3
SQL server 2012
ODBC Driver 17
CodeIgniter 3.1.9
PHP 7.0.31

Answer 1

Solution:
You need to fix some issues:
define varchar columns with this format: varchar [(n|max)]. When n is not specified, the default length is 1 and when you try to INSERT value 'sam', a warning will be generated.
put SET NOCOUNT ON; as first statement. If you miss that part, your statement will return more than one resultset, so you must make resultsets available by using sqlsrv_next_result().
Working example:
<?php
$server = 'server\instance,port';
$database = 'database';
$username = 'username';
$password = 'password';
$cinfo = array(
"Database" => $database,
"UID" => $username,
"PWD" => $password
);
$conn = sqlsrv_connect($server, $cinfo);
if ($conn === false) {
echo print_r(sqlsrv_errors(), true);
exit;
}
# Statement
$sql = "
SET NOCOUNT ON;
CREATE TABLE #output(name varchar(50) NULL, id int NULL);
INSERT INTO #output (name, id) VALUES ('sam', 5);
SELECT * FROM #output;
";
$stmt = sqlsrv_query($conn, $sql);
if ($stmt === false) {
echo print_r(sqlsrv_errors(), true);
exit;
}
# Results
while ($obj = sqlsrv_fetch_object($stmt)) {
echo 'Name: '.$obj->name.'</br>';
echo 'ID: '.$obj->id.'</br>';
}
# End
sqlsrv_free_stmt($stmt);
sqlsrv_close($conn);
?>
Notes:
I'm not so familiar with CodeIgniter, but I think that this is your problem.