diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMLONGLAT.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMLONGLAT.sql
index 0ee2eafcd..ea1543d83 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMLONGLAT.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMLONGLAT.sql
@@ -1,6 +1,6 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 CREATE OR REPLACE SECURE FUNCTION @@SF_SCHEMA@@.QUADBIN_FROMLONGLAT
 (longitude FLOAT, latitude FLOAT, resolution INT)
@@ -16,13 +16,13 @@ AS $$
                 SELECT
                     resolution AS z,
                     ACOS(-1) AS PI,
-                    GREATEST(-85.05, LEAST(85.05, latitude)) AS latitude
+                    GREATEST(-85.05, LEAST(85.05, latitude)) AS params_latitude
             ),
             __zxy AS (
                 SELECT
                     z,
-                    bitand( CAST(FLOOR(BITSHIFTLEFT(1, z) * ((longitude / 360.0) + 0.5)) AS INT), (BITSHIFTLEFT(1, z) - 1)) AS x,
-                    bitand( CAST(FLOOR(BITSHIFTLEFT(1, z) * (0.5 - (LN(TAN(PI/4.0 + latitude/2.0 * PI/180.0)) / (2*PI)))) AS INT),
+                    BITAND( CAST(FLOOR(BITSHIFTLEFT(1, z) * ((longitude / 360.0) + 0.5)) AS INT), (BITSHIFTLEFT(1, z) - 1)) AS x,
+                    BITAND( CAST(FLOOR(BITSHIFTLEFT(1, z) * (0.5 - (LN(TAN(PI/4.0 + params_latitude/2.0 * PI/180.0)) / (2*PI)))) AS INT),
                             (BITSHIFTLEFT(1, z) - 1)) AS y
                 FROM __params
             )
diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMQUADKEY.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMQUADKEY.sql
index d8991f85a..ac37f8e22 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMQUADKEY.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMQUADKEY.sql
@@ -1,6 +1,6 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 CREATE OR REPLACE FUNCTION @@SF_SCHEMA@@._QUADBIN_FROMQUADKEY
 (quadkey STRING)
@@ -22,5 +22,8 @@ CREATE OR REPLACE FUNCTION @@SF_SCHEMA@@.QUADBIN_FROMQUADKEY
 RETURNS BIGINT
 IMMUTABLE
 AS $$
-    SELECT CAST(@@SF_SCHEMA@@._QUADBIN_FROMQUADKEY(QUADKEY) AS BIGINT)
+    IFF(quadkey IS NULL,
+        NULL,
+        CAST(@@SF_SCHEMA@@._QUADBIN_FROMQUADKEY(QUADKEY) AS BIGINT)
+    )
 $$;
diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMZXY.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMZXY.sql
index 008e1c29b..6404b8895 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMZXY.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_FROMZXY.sql
@@ -1,6 +1,6 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 CREATE OR REPLACE FUNCTION @@SF_SCHEMA@@._QUADBIN_FROMZXY
 (z DOUBLE, x DOUBLE, y DOUBLE)
@@ -25,7 +25,10 @@ CREATE OR REPLACE SECURE FUNCTION @@SF_SCHEMA@@.QUADBIN_FROMZXY
 RETURNS BIGINT
 IMMUTABLE
 AS $$
-    @@SF_SCHEMA@@._QUADBIN_STRING_TOINT(
-       @@SF_SCHEMA@@._QUADBIN_FROMZXY(Z, X, Y)
+    IFF(z IS NULL OR x IS NULL OR y IS NULL,
+        NULL,
+        @@SF_SCHEMA@@._QUADBIN_STRING_TOINT(
+            @@SF_SCHEMA@@._QUADBIN_FROMZXY(Z, X, Y)
+        )
     )
 $$;
diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_KRING.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_KRING.sql
index 6e4819ad6..7c56caa8f 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_KRING.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_KRING.sql
@@ -1,6 +1,6 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 -- The function returns a STRING for two main issues related with Snowflake limitations
 -- 1. Snowflake has a native support of BigInt numbers, however, if the UDF
@@ -14,5 +14,8 @@ CREATE OR REPLACE SECURE FUNCTION @@SF_SCHEMA@@.QUADBIN_KRING
 RETURNS ARRAY
 IMMUTABLE
 AS $$
-    TO_ARRAY(PARSE_JSON(@@SF_SCHEMA@@._QUADBIN_KRING(TO_VARCHAR(ORIGIN, 'xxxxxxxxxxxxxxxx'), SIZE, false)))
+    IFF(origin IS NULL OR size IS NULL,
+        NULL,
+        TO_ARRAY(PARSE_JSON(@@SF_SCHEMA@@._QUADBIN_KRING(TO_VARCHAR(ORIGIN, 'xxxxxxxxxxxxxxxx'), SIZE, false)))
+    )
 $$;
diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_KRING_DISTANCES.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_KRING_DISTANCES.sql
index e75e7f9eb..80ec7e764 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_KRING_DISTANCES.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_KRING_DISTANCES.sql
@@ -1,6 +1,6 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 -- The function returns a STRING for two main issues related with Snowflake limitations
 -- 1. Snowflake has a native support of BigInt numbers, however, if the UDF
@@ -14,5 +14,8 @@ CREATE OR REPLACE SECURE FUNCTION @@SF_SCHEMA@@.QUADBIN_KRING_DISTANCES
 RETURNS ARRAY
 IMMUTABLE
 AS $$
-    TO_ARRAY(PARSE_JSON(@@SF_SCHEMA@@._QUADBIN_KRING(TO_VARCHAR(ORIGIN, 'xxxxxxxxxxxxxxxx'), SIZE, true)))
+    IFF(origin IS NULL OR size IS NULL,
+        NULL,
+        TO_ARRAY(PARSE_JSON(@@SF_SCHEMA@@._QUADBIN_KRING(TO_VARCHAR(ORIGIN, 'xxxxxxxxxxxxxxxx'), SIZE, true)))
+    )
 $$;
diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_SIBLING.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_SIBLING.sql
index c79ec79fd..877711c64 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_SIBLING.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_SIBLING.sql
@@ -1,6 +1,6 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 -- FIXME: slow
 
@@ -9,16 +9,19 @@ CREATE OR REPLACE SECURE FUNCTION @@SF_SCHEMA@@.QUADBIN_SIBLING
 RETURNS INT
 IMMUTABLE
 AS $$
-    CASE direction
-        WHEN 'left' THEN
-            @@SF_SCHEMA@@._QUADBIN_SIBLING(quadbin, -1, 0)
-        WHEN 'right' THEN
-            @@SF_SCHEMA@@._QUADBIN_SIBLING(quadbin, 1, 0)
-        WHEN 'up' THEN
-            @@SF_SCHEMA@@._QUADBIN_SIBLING(quadbin, 0, -1)
-        WHEN 'down' THEN
-            @@SF_SCHEMA@@._QUADBIN_SIBLING(quadbin, 0, 1)
-        ELSE
-            NULL
-    END
+    IFF(quadbin IS NULL OR direction IS NULL,
+        NULL,
+        CASE direction
+            WHEN 'left' THEN
+                @@SF_SCHEMA@@._QUADBIN_SIBLING(quadbin, -1, 0)
+            WHEN 'right' THEN
+                @@SF_SCHEMA@@._QUADBIN_SIBLING(quadbin, 1, 0)
+            WHEN 'up' THEN
+                @@SF_SCHEMA@@._QUADBIN_SIBLING(quadbin, 0, -1)
+            WHEN 'down' THEN
+                @@SF_SCHEMA@@._QUADBIN_SIBLING(quadbin, 0, 1)
+            ELSE
+                NULL
+        END
+    )
 $$;
diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOPARENT.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOPARENT.sql
index 322e1ef33..d75a9b600 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOPARENT.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOPARENT.sql
@@ -1,25 +1,30 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 CREATE OR REPLACE SECURE FUNCTION @@SF_SCHEMA@@.QUADBIN_TOPARENT
 (quadbin BIGINT, resolution INT)
 RETURNS BIGINT
 IMMUTABLE
 AS $$
-    SELECT bitor(
-                bitor(
-                    bitand(
-                        quadbin,
-                        bitnot(
-                            bitshiftleft(31, 52)
-                        )
+    IFF(quadbin IS NULL OR resolution IS NULL OR resolution < 0 OR resolution > 26,
+        NULL,
+        (
+        SELECT bitor(
+                    bitor(
+                        bitand(
+                            quadbin,
+                            bitnot(
+                                bitshiftleft(31, 52)
+                            )
+                        ),
+                        bitshiftleft(resolution, 52)
                     ),
-                    bitshiftleft(resolution, 52)
-                ),
-                bitshiftright(
-                    4503599627370495,
-                    resolution * 2
+                    bitshiftright(
+                        4503599627370495,
+                        resolution * 2
+                    )
                 )
-            )
+        )
+    )
 $$;
diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOQUADKEY.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOQUADKEY.sql
index d418ae0d4..af62d8a6f 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOQUADKEY.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOQUADKEY.sql
@@ -1,6 +1,6 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 CREATE OR REPLACE FUNCTION @@SF_SCHEMA@@._QUADBIN_TOQUADKEY
 (quadbin STRING)
@@ -20,5 +20,8 @@ CREATE OR REPLACE FUNCTION @@SF_SCHEMA@@.QUADBIN_TOQUADKEY
 RETURNS STRING
 IMMUTABLE
 AS $$
-    SELECT @@SF_SCHEMA@@._QUADBIN_TOQUADKEY(CAST(QUADBIN AS STRING))
+    IFF(quadbin IS NULL,
+        NULL,
+        @@SF_SCHEMA@@._QUADBIN_TOQUADKEY(CAST(QUADBIN AS STRING))
+    )
 $$;
diff --git a/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOZXY.sql b/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOZXY.sql
index 6b7d0462c..d46b2e6c1 100644
--- a/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOZXY.sql
+++ b/clouds/snowflake/modules/sql/quadbin/QUADBIN_TOZXY.sql
@@ -1,6 +1,6 @@
-----------------------------
--- Copyright (C) 2022 CARTO
-----------------------------
+--------------------------------
+-- Copyright (C) 2022-2023 CARTO
+--------------------------------
 
 
 CREATE OR REPLACE SECURE FUNCTION @@SF_SCHEMA@@.QUADBIN_TOZXY
@@ -8,5 +8,8 @@ CREATE OR REPLACE SECURE FUNCTION @@SF_SCHEMA@@.QUADBIN_TOZXY
 RETURNS OBJECT
 IMMUTABLE
 AS $$
-    @@SF_SCHEMA@@._QUADBIN_TOZXY(TO_VARCHAR(QUADBIN, 'xxxxxxxxxxxxxxxx'))
+    IFF(quadbin IS NULL,
+        NULL,
+        @@SF_SCHEMA@@._QUADBIN_TOZXY(TO_VARCHAR(QUADBIN, 'xxxxxxxxxxxxxxxx'))
+    )
 $$;