These two regex won't match with the complex column type now.

grafana#783

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+### Fixes
+- Fixed converter regex for `Nullable(IP)` and `Nullable(String)`. It won't match to `Array(Nullable(IP))` or `Array(Nullable(String))` any more. (#783)
+
 ## 4.0.4
 
 ### Fixes

pkg/converters/converters.go

@@ -33,8 +33,8 @@ var matchRegexes = map[string]*regexp.Regexp{
 	"Nested()":                  regexp.MustCompile(`^Nested\(.*\)`),
 	"Nullable(Date)":            regexp.MustCompile(`^Nullable\(Date\(?`),
 	"Nullable(Decimal)":         regexp.MustCompile(`^Nullable\(Decimal`),
-	"Nullable(IP)":              regexp.MustCompile(`Nullable\(IP`),
-	"Nullable(String)":          regexp.MustCompile(`Nullable\(String`),
+	"Nullable(IP)":              regexp.MustCompile(`^Nullable\(IP`),
+	"Nullable(String)":          regexp.MustCompile(`^Nullable\(String`),
 	"Point":                     regexp.MustCompile(`^Point`),
 	"SimpleAggregateFunction()": regexp.MustCompile(`^SimpleAggregateFunction\(.*\)`),
 	"Tuple()":                   regexp.MustCompile(`^Tuple\(.*\)`),

pkg/plugin/driver_test.go

@@ -868,6 +868,20 @@ func TestArrayNullableUInt256(t *testing.T) {
 	}
 }
 
+func TestArrayNullableString(t *testing.T) {
+	for name, protocol := range Protocols {
+		t.Run(fmt.Sprintf("using %s", name), func(t *testing.T) {
+			var val []*string
+			conn, close := setupTest(t, "col1 Array(Nullable(String))", protocol, nil)
+			defer close(t)
+			v := "48"
+			val = append(val, &v, nil)
+			insertData(t, conn, val)
+			checkRows(t, conn, 1, val)
+		})
+	}
+}
+
 func TestMap(t *testing.T) {
 	for name, protocol := range Protocols {
 		t.Run(fmt.Sprintf("using %s", name), func(t *testing.T) {