added PDO identifierQuote and fetchFirstNoLog

SE/se-lib/Core/Pdo.php

@@ -32,6 +32,14 @@ class Core_Pdo extends PDO {
 		return strtolower($this->_type);
 	}
 
+	public function identifierQuote($identifier) {
+		switch (strtolower($this->_type)) {
+			case 'pgsql': return $identifier; // "'{$identifier}'";
+			case 'mysql': return "`{$identifier}`";
+		}
+		return $identifier;
+	}
+
 	public function getTableStruct($tblName) {// TODO: mved to Core_Storage_*
 		$sth = $this->prepare("
 			-- show fields from {$tblName}
@@ -437,6 +445,15 @@ EOF_STRUCT_MYSQL;
 		return $sth->fetch();
 	}
 
+	public function fetchFirstNoLog($sql, $values = []) { // fetch only first row - used in User::getID() required in DBG
+		$sth = $this->prepare($sql);
+		if (!empty($values)) {
+			$this->bindValues($sth, $values);
+		}
+		$sth->execute();
+		return $sth->fetch();
+	}
+
 	public function fetchAll($sql, $values = []) {
 		$sth = $this->prepare($sql);
 		if (!empty($values)) {