refactor(helper): Adjusted the return values of some methods in `help… #235

Job	Run time
go test (1.18.x, ubuntu-latest, mysql:latest)	56s
go test (1.18.x, ubuntu-latest, mysql:latest)	56s
go test (1.18.x, ubuntu-latest, mysql:5.7)	1m 5s
go test (1.18.x, ubuntu-latest, mysql:5.7)	1m 5s
go test (1.19.x, ubuntu-latest, mysql:latest)	59s
go test (1.19.x, ubuntu-latest, mysql:latest)	59s
go test (1.19.x, ubuntu-latest, mysql:5.7)	1m 6s
go test (1.19.x, ubuntu-latest, mysql:5.7)	58s
go test (1.20.x, ubuntu-latest, mysql:latest)	1m 3s
go test (1.20.x, ubuntu-latest, mysql:latest)	1m 1s
go test (1.20.x, ubuntu-latest, mysql:5.7)	55s
go test (1.20.x, ubuntu-latest, mysql:5.7)	55s
go test (1.21.x, ubuntu-latest, mysql:latest)	1m 13s
go test (1.21.x, ubuntu-latest, mysql:latest)	1m 10s
go test (1.21.x, ubuntu-latest, mysql:5.7)	1m 7s
go test (1.21.x, ubuntu-latest, mysql:5.7)	1m 4s
go test (1.22.x, ubuntu-latest, mysql:latest)	1m 4s
go test (1.22.x, ubuntu-latest, mysql:latest)	1m 3s
go test (1.22.x, ubuntu-latest, mysql:5.7)	1m 5s
go test (1.22.x, ubuntu-latest, mysql:5.7)	1m 18s
	21m 2s

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