fix dt floor misuse

Author: TrevorBergeron

tests/unit/core/compile/sqlglot/expressions/snapshots/test_unary_compiler/test_floor_dt/out.sql

@@ -5,9 +5,9 @@ WITH `bfcte_0` AS (
 ), `bfcte_1` AS (
   SELECT
     *,
-    TIMESTAMP_TRUNC(`bfcol_0`, DAY) AS `bfcol_1`
+    TIMESTAMP_TRUNC(`bfcol_0`, D) AS `bfcol_1`
   FROM `bfcte_0`
 )
 SELECT
   `bfcol_1` AS `timestamp_col`
-FROM `bfcte_1`
+FROM `bfcte_1`

tests/unit/core/compile/sqlglot/expressions/snapshots/test_unary_compiler/test_normalize/out.sql

@@ -5,9 +5,9 @@ WITH `bfcte_0` AS (
 ), `bfcte_1` AS (
   SELECT
     *,
-    TIMESTAMP_TRUNC(`bfcol_0`, DAY) AS `bfcol_1`
+    TIMESTAMP_TRUNC(`bfcol_0`, D) AS `bfcol_1`
   FROM `bfcte_0`
 )
 SELECT
   `bfcol_1` AS `timestamp_col`
-FROM `bfcte_1`
+FROM `bfcte_1`

tests/unit/core/compile/sqlglot/expressions/test_unary_compiler.py

@@ -153,7 +153,7 @@ def test_expm1(scalar_types_df: bpd.DataFrame, snapshot):
 
 def test_floor_dt(scalar_types_df: bpd.DataFrame, snapshot):
     bf_df = scalar_types_df[["timestamp_col"]]
-    sql = _apply_unary_op(bf_df, ops.FloorDtOp("DAY"), "timestamp_col")
+    sql = _apply_unary_op(bf_df, ops.FloorDtOp("D"), "timestamp_col")
 
     snapshot.assert_match(sql, "out.sql")