refactor: fix isdigit_op and isdecimal_op

Author: chelsea-lin

bigframes/core/compile/sqlglot/expressions/string_ops.py

@@ -153,12 +153,15 @@ def _(expr: TypedExpr) -> sge.Expression:
 
 @register_unary_op(ops.isdecimal_op)
 def _(expr: TypedExpr) -> sge.Expression:
-    return sge.RegexpLike(this=expr.expr, expression=sge.convert(r"^\d+$"))
+    return sge.RegexpLike(this=expr.expr, expression=sge.convert(r"^(\p{Nd})+$"))
 
 
 @register_unary_op(ops.isdigit_op)
 def _(expr: TypedExpr) -> sge.Expression:
-    return sge.RegexpLike(this=expr.expr, expression=sge.convert(r"^\p{Nd}+$"))
+    regexp_pattern = (
+        r"^[\p{Nd}\x{00B9}\x{00B2}\x{00B3}\x{2070}\x{2074}-\x{2079}\x{2080}-\x{2089}]+$"
+    )
+    return sge.RegexpLike(this=expr.expr, expression=sge.convert(regexp_pattern))
 
 
 @register_unary_op(ops.islower_op)

tests/unit/core/compile/sqlglot/expressions/snapshots/test_string_ops/test_isdecimal/out.sql

@@ -5,7 +5,7 @@ WITH `bfcte_0` AS (
 ), `bfcte_1` AS (
   SELECT
     *,
-    REGEXP_CONTAINS(`string_col`, '^\\d+$') AS `bfcol_1`
+    REGEXP_CONTAINS(`string_col`, '^(\\p{Nd})+$') AS `bfcol_1`
   FROM `bfcte_0`
 )
 SELECT

tests/unit/core/compile/sqlglot/expressions/snapshots/test_string_ops/test_isdigit/out.sql

@@ -5,7 +5,10 @@ WITH `bfcte_0` AS (
 ), `bfcte_1` AS (
   SELECT
     *,
-    REGEXP_CONTAINS(`string_col`, '^\\p{Nd}+$') AS `bfcol_1`
+    REGEXP_CONTAINS(
+      `string_col`,
+      '^[\\p{Nd}\\x{00B9}\\x{00B2}\\x{00B3}\\x{2070}\\x{2074}-\\x{2079}\\x{2080}-\\x{2089}]+$'
+    ) AS `bfcol_1`
   FROM `bfcte_0`
 )
 SELECT