framework/db/ColumnSchemaBuilder.php
protected function buildLengthString()
    {
        if ($this->length === null || $this->length === []) {
            return '';
        }
        if (is_array($this->length)) {
            $this->length = implode(',', $this->length);
        }

        return "({$this->length})";
    }
protected function buildLengthString()
    {
        if ($this->length === null || $this->length === []) {
            return '';
        }
        if (is_array($this->length)) {
            $this->length = implode(',', $this->length);
        }

        return "({$this->length})";
    }
Builds the length/precision part of the column.
@return string