{`a%__%\`, `a\%\_\__`, '\\', false, nil},
		{`a%__%\`, `a\%\_\_%`, '\\', true, nil},
		{`a%__%\`, `a?%?_?_?%\`, '?', true, nil},
	}

	for i, tc := range evalCases {
		// fmt.Println("Case:", i)
		res, err := evalSQLLike(tc.iText, tc.iPat, tc.iEsc)
		if res != tc.matchExpected || err != tc.errExpected {
			t.Errorf("Eval Case %d failed: %v %v", i, res, err)
		}
	}

	errInvalidSubstringIndexLen = errors.New("Substring start index or length falls outside the string")
)

const (
	percent    rune = '%'
	underscore rune = '_'
	runeZero   rune = 0
)

func evalSQLLike(text, pattern string, escape rune) (match bool, err error) {
	s := []rune{}
	prev := runeZero
	hasLeadingPercent := false
	patLen := len([]rune(pattern))
	for i, r := range pattern {
		if i > 0 && prev == escape {