Fix empty string

Author: AsafMah

azkustodata/kql/builder_test.go

@@ -129,6 +129,11 @@ func TestBuilder(t *testing.T) {
 				AddColumn("b\na\nz").AddLiteral(" == ").
 				AddFunction("f_u_n\u1234c").AddLiteral("()"),
 			`database("f\"\"o").["b\\a\\r"] | where ["b\na\nz"] == ["f_u_n\u1234c"]()`},
+		{
+			"Test Empty String",
+			New(`myTable | where col = `).AddString(""),
+			`myTable | where col = ""`,
+		},
 	}
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {

azkustodata/kql/string_utils.go

@@ -26,10 +26,6 @@ func RequiresQuoting(value string) bool {
 }
 
 func QuoteString(value string, hidden bool) string {
-	if value == "" {
-		return value
-	}
-
 	var literal strings.Builder
 
 	if hidden {