First i write manually update, delete, insert and select query and execute data with mysql_query
function
Like this:
Select query
$prefix = $wpdb->prefix;
$postSql = "SELECT DISTINCT post_id
FROM " . $prefix . "postmeta As meta
Inner Join " . $prefix . "posts As post
On post.ID = meta.post_id
Where post_type="product"
And post_status="publish"
And meta_key Like '%product_img%'";
$postQry = mysql_query($postSql);
while ($postRow = mysql_fetch_array($postQry)) {
$post_id = $postRow['post_id'];
}
Insert Query
$insert_images = "Insert Into " . $prefix . "postmeta(post_id,meta_key,meta_value) Value('$post_id','$meta_key','$data_serialize')";
mysql_query($insert_images);
Update Query:
$update_price = "Update " . $prefix . "postmeta
Set meta_key = 'wpc_product_price'
Where post_id = $supportMetaID
And meta_key Like '%product_price%'";
mysql_query($update_price);
Delete Query
mysql_query("Delete From " . $prefix . "postmeta Where meta_key IN ('product_img1','product_img2','product_img3')");
All queries are working perfectly … but now i want to embed all queries in wordpress queries.
I can also use wordpress queries like
$wpdb->get_results( "SELECT id, name FROM mytable" );
$wpdb->insert(
'table',
array(
'column1' => 'value1',
'column2' => 123
),
);
$wpdb->update(
'table',
array(
'column1' => 'value1', // string
'column2' => 'value2' // integer (number)
),
array( 'ID' => 1 )
);
$wpdb->delete( 'table', array( 'ID' => 1 ) );
But you can see that i use and / or
conditions in my queries. So any body help me how can i embed my queries in wordpress
2 Answers
About UPDATE+INSERT:
I have made a function for myself, and might help you too, i.e. :
UPDATE_OR_INSERT('wp_users', array('gender'=>'female'), array('name'=>'Monika') );
that will UPDATE A VALUE in column (where name=monika
), but in case that value doesnt exists, then it creates a new record in DB.
Why this is necessary? because As far as i know, there is no sophisticated WP function, that will update data in DB (if value exists) or inserts data (if not exists). Instead, we use : $wpdb->update()
or $wpdb->insert()
.
So, use that function, it helps:
function UPDATE_OR_INSERT($tablename, $NewArray, $WhereArray){ global $wpdb; $arrayNames= array_keys($WhereArray);
//convert array to STRING
$o=''; $i=1; foreach ($WhereArray as $key=>$value){ $o .= $key . ' = \''. $value .'\''; if ($i != count($WhereArray)) { $o .=' AND '; $i++;} }
//check if already exist
$CheckIfExists = $wpdb->get_var("SELECT ".$arrayNames[0]." FROM ".$tablename." WHERE ".$o);
if (!empty($CheckIfExists)) { return $wpdb->update($tablename, $NewArray, $WhereArray );}
else { return $wpdb->insert($tablename, array_merge($NewArray, $WhereArray) ); }
}