feat(snowflake): add support for TRIM function

Author: fivetran-BradfordPaskewitz

sqlglot/dialects/snowflake.py

@@ -500,7 +500,10 @@ class Snowflake(Dialect):
         **Dialect.ANNOTATORS,
         **{
             expr_type: lambda self, e: self._annotate_by_args(e, "this")
-            for expr_type in (exp.Reverse,)
+            for expr_type in (
+                exp.Reverse,
+                exp.Trim,
+            )
         },
     }
 

tests/fixtures/optimizer/annotate_functions.sql

@@ -1559,6 +1559,30 @@ BINARY;
 REVERSE(NULL);
 NULL;
 
+# dialect: snowflake
+TRIM('hello world');
+VARCHAR;
+
+# dialect: snowflake
+TRIM('hello world', 'hello');
+VARCHAR;
+
+# dialect: snowflake
+TRIM(tbl.bin_col);
+BINARY;
+
+# dialect: snowflake
+TRIM(tbl.bin_col, tbl.bin_col);
+BINARY;
+
+# dialect: snowflake
+TRIM(tbl.str_col);
+TEXT;
+
+# dialect: snowflake
+TRIM(tbl.str_col, tbl.str_col);
+TEXT;
+
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 -- T-SQL
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