add type constraint

Harish · Harish · commit f133fb9d230a · 2025-12-17T22:57:02.000+07:00
diff --git a/QueryBuilder/Query.Select.cs b/QueryBuilder/Query.Select.cs
@@ -119,7 +119,7 @@ public Query SelectMax(string column, Func<Query, Query> filter = null)
             return SelectAggregate("max", column, filter);
         }
 
-        public Query Select<T>() {
+        public Query Select<T>() where T : class {
             var properties = typeof(T).GetProperties();
             var columns = new List<string>();
             foreach (var property in properties) {

Original file line number	Diff line number	Diff line change
`@@ -119,7 +119,7 @@ public Query SelectMax(string column, Func<Query, Query> filter = null)`
`119`	`119`	`return SelectAggregate("max", column, filter);`
`120`	`120`	`}`
`121`	`121`
`122`		`- public Query Select<T>() {`
	`122`	`+ public Query Select<T>() where T : class {`
`123`	`123`	`var properties = typeof(T).GetProperties();`
`124`	`124`	`var columns = new List<string>();`
`125`	`125`	`foreach (var property in properties) {`