only concat $columns with $this->_processIndexes($table) when returns string
only concat $columns with $this->_processIndexes($table) when returns string

natanfelles/CodeIgniter4,bcit-ci/CodeIgniter4,ytetsuro/CodeIgniter4,lonnieezell/CodeIgniter4,samsonasik/CodeIgniter4,kenjis/CodeIgniter4,samsonasik/CodeIgniter4,natanfelles/CodeIgniter4,lonnieezell/CodeIgniter4,samsonasik/CodeIgniter4,lonnieezell/CodeIgniter4,ytetsuro/CodeIgniter4,ytetsuro/CodeIgniter4,kenjis/CodeIgniter4,samsonasik/CodeIgniter4,bcit-ci/CodeIgniter4,natanfelles/CodeIgniter4,lonnieezell/CodeIgniter4,samsonasik/CodeIgniter4,natanfelles/CodeIgniter4,bcit-ci/CodeIgniter4,kenjis/CodeIgniter4,samsonasik/CodeIgniter4,bcit-ci/CodeIgniter4,lonnieezell/CodeIgniter4,bcit-ci/CodeIgniter4,lonnieezell/CodeIgniter4,natanfelles/CodeIgniter4,ytetsuro/CodeIgniter4,ytetsuro/CodeIgniter4,kenjis/CodeIgniter4,ytetsuro/CodeIgniter4,natanfelles/CodeIgniter4,kenjis/CodeIgniter4