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database/sql: add NullInt32

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It is common for database integers to be represented as int32
internally. Although NullInt64 is already defined,
this should remove some type casts and make working with those eaiser.

For #31231

Change-Id: Ia0c37ecef035fee0734c1d1fb6f58aef6905cf5e
Reviewed-on: https://go-review.googlesource.com/c/go/+/174178
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Daniel Theophanes 2019-04-26 11:46:26 -07:00
parent 8ef45cf60b
commit 2177bfb343
3 changed files with 43 additions and 0 deletions
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13
src/database/sql/sql_test.go
View file

@ -131,6 +131,7 @@ func TestDriverPanic(t *testing.T) {
}
func exec(t testing.TB, db *DB, query string, args ...interface{}) {
t.Helper()
_, err := db.Exec(query, args...)
if err != nil {
t.Fatalf("Exec of %q: %v", query, err)
@ -1671,6 +1672,18 @@ func TestNullInt64Param(t *testing.T) {
nullTestRun(t, spec)
}
func TestNullInt32Param(t *testing.T) {
spec := nullTestSpec{"nullint32", "int32", [6]nullTestRow{
{NullInt32{31, true}, 1, NullInt32{31, true}},
{NullInt32{-22, false}, 1, NullInt32{0, false}},
{22, 1, NullInt32{22, true}},
{NullInt32{33, true}, 1, NullInt32{33, true}},
{NullInt32{222, false}, 1, NullInt32{0, false}},
{0, NullInt32{31, false}, nil},
}}
nullTestRun(t, spec)
}
func TestNullFloat64Param(t *testing.T) {
spec := nullTestSpec{"nullfloat64", "float64", [6]nullTestRow{
{NullFloat64{31.2, true}, 1, NullFloat64{31.2, true}},