datafuselabs · sundy-li · Jan 6, 2023 · Dec 27, 2022 · Dec 27, 2022 · Dec 27, 2022
diff --git a/Cargo.lock b/Cargo.lock
diff --git a/docs/doc/15-sql-functions/120-other-functions/to_nullable.md b/docs/doc/15-sql-functions/120-other-functions/to_nullable.md
@@ -34,16 +34,6 @@ select to_nullable(3);
 +----------------+
 ```
 
-```sql
-select to_nullable(null);
-
-+-------------------+
-| to_nullable(NULL) |
-+-------------------+
-|              NULL |
-+-------------------+
-```
-
 
 
 

diff --git a/docs/doc/15-sql-functions/40-string-functions/elt.md b/docs/doc/15-sql-functions/40-string-functions/elt.md
diff --git a/docs/doc/15-sql-functions/40-string-functions/export_set.md b/docs/doc/15-sql-functions/40-string-functions/export_set.md
diff --git a/docs/doc/15-sql-functions/40-string-functions/field.md b/docs/doc/15-sql-functions/40-string-functions/field.md
diff --git a/docs/doc/15-sql-functions/40-string-functions/find_in_set.md b/docs/doc/15-sql-functions/40-string-functions/find_in_set.md
diff --git a/docs/doc/15-sql-functions/40-string-functions/format.md b/docs/doc/15-sql-functions/40-string-functions/format.md
diff --git a/docs/doc/15-sql-functions/40-string-functions/substring_index.md b/docs/doc/15-sql-functions/40-string-functions/substring_index.md
diff --git a/docs/doc/15-sql-functions/60-conversion-functions/try_cast.md b/docs/doc/15-sql-functions/60-conversion-functions/try_cast.md
@@ -40,8 +40,8 @@ SELECT try_cast('abc' AS INT UNSIGNED);
 
 SELECT typeof(try_cast('abc' AS INT UNSIGNED));
 +-----------------------------------+
-| typeof(try_cast('abc' as UInt32)) |
+| typeof(try_cast('abc' as uint32)) |
 +-----------------------------------+
-| INT UNSIGNED                      |
+| INT UNSIGNED NULL                 |
 +-----------------------------------+
 ```
diff --git a/docs/doc/15-sql-functions/70-hash-functions/city64withseed.md b/docs/doc/15-sql-functions/70-hash-functions/city64withseed.md
@@ -31,11 +31,4 @@ SELECT City64WithSeed('1234567890', 12);
 |             10660895976650300430 |
 +----------------------------------+
 
-SELECT City64WithSeed('1234567890', 12.12);
-+-------------------------------------+
-| City64WithSeed('1234567890', 12.12) |
-+-------------------------------------+
-|                10660895976650300430 |
-+-------------------------------------+
-
 ```
diff --git a/docs/doc/15-sql-functions/80-uuid-functions/gen-zero-uuid.md b/docs/doc/15-sql-functions/80-uuid-functions/gen-zero-uuid.md
diff --git a/docs/doc/15-sql-functions/80-uuid-functions/is-empty-uuid.md b/docs/doc/15-sql-functions/80-uuid-functions/is-empty-uuid.md