[fix](Nereids) support implicit cast ip types to string (#39318) (#39440)

pick from master #39318

fe/fe-common/src/main/java/org/apache/doris/catalog/PrimitiveType.java

@@ -591,6 +591,14 @@ public enum PrimitiveType {
         builder.put(VARIANT, STRING);
         builder.put(VARIANT, JSONB);
 
+        // ipv4
+        builder.put(IPV4, VARCHAR);
+        builder.put(IPV4, STRING);
+
+        // ipv6
+        builder.put(IPV6, VARCHAR);
+        builder.put(IPV6, STRING);
+
         // HLL
         builder.put(HLL, HLL);
 

regression-test/suites/nereids_syntax_p0/cast.groovy

@@ -248,4 +248,20 @@ suite("cast") {
         sql """select cast(k11 as time) ct from test order by ct;"""
         exception "cannot cast"
     }
+
+    // ip
+
+    sql """drop table if exists ip_test"""
+    sql """
+        create table if not exists ip_test (a ipv6, b ipv4)  properties ("replication_num" = "1");
+    """
+    sql """
+        insert into ip_test values('d916:b163:3ce8:e0f3:b953:fa0c:ab21:1ff9', "172.20.48.119");
+    """
+
+    sql """sync"""
+
+    sql """select ipv6_string_to_num(a), ipv4_string_to_num(b) from ip_test"""
+    sql """drop table if exists ip_test"""
 }
+