hasOperator example

// Do we want to escape the table name?         if ($escape === true) {
            $table = $this->db->protectIdentifiers($table, true, null, false);
        }

        if ($cond instanceof RawSql) {
            $this->QBJoin[] = $type . 'JOIN ' . $table . ' ON ' . $cond;

            return $this;
        }

        if ($this->hasOperator($cond)) {
            $cond = ' USING (' . ($escape ? $this->db->escapeIdentifiers($cond) : $cond) . ')';
        } elseif ($escape === false) {
            $cond = ' ON ' . $cond;
        } else {
            // Split multiple conditions             if (preg_match_all('/\sAND\s|\sOR\s/i', $cond$joints, PREG_OFFSET_CAPTURE)) {
                $conditions = [];
                $joints     = $joints[0];
                array_unshift($joints['', 0]);

                for ($i = count($joints) - 1, $pos = strlen($cond)$i >= 0; $i--) {
                    

        }

        // Extract any aliases that might exist. We use this information         // in the protectIdentifiers to know whether to add a table prefix         $this->trackAliases($table);

        if (is_bool($escape)) {
            $escape = $this->db->protectIdentifiers;
        }

        if ($this->hasOperator($cond)) {
            $cond = ' USING (' . ($escape ? $this->db->escapeIdentifiers($cond) : $cond) . ')';
        } elseif ($escape === false) {
            $cond = ' ON ' . $cond;
        } else {
            // Split multiple conditions             if (preg_match_all('/\sAND\s|\sOR\s/i', $cond$joints, PREG_OFFSET_CAPTURE)) {
                $conditions = [];
                $joints     = $joints[0];
                array_unshift($joints['', 0]);

                for ($i = count($joints) - 1, $pos = strlen($cond)$i >= 0; $i--) {
                    
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