Used AND, OR, XOR constants instead of hard-coded values.

2 files changed, 5 insertions, 4 deletions

diff --git a/django/db/models/sql/compiler.py b/django/db/models/sql/compiler.py
index 461e1ae156..cfac22a019 100644
--- a/django/db/models/sql/compiler.py
+++ b/django/db/models/sql/compiler.py
@@ -19,6 +19,7 @@ from django.db.models.sql.constants import (
     SINGLE,
 )
 from django.db.models.sql.query import Query, get_order_dir
+from django.db.models.sql.where import AND
 from django.db.transaction import TransactionManagementError
 from django.utils.functional import cached_property
 from django.utils.hashable import make_hashable
@@ -1435,7 +1436,7 @@ class SQLCompiler:
         for index, select_col in enumerate(self.query.select):
             lhs_sql, lhs_params = self.compile(select_col)
             rhs = "%s.%s" % (qn(alias), qn2(columns[index]))
-            self.query.where.add(RawSQL("%s = %s" % (lhs_sql, rhs), lhs_params), "AND")
+            self.query.where.add(RawSQL("%s = %s" % (lhs_sql, rhs), lhs_params), AND)
 
         sql, params = self.as_sql()
         return "EXISTS (%s)" % sql, params
diff --git a/django/db/models/sql/query.py b/django/db/models/sql/query.py
index cf7566d771..14ed0c0a63 100644
--- a/django/db/models/sql/query.py
+++ b/django/db/models/sql/query.py
@@ -2658,7 +2658,7 @@ class JoinPromoter:
             # to rel_a would remove a valid match from the query. So, we need
             # to promote any existing INNER to LOUTER (it is possible this
             # promotion in turn will be demoted later on).
-            if self.effective_connector == "OR" and votes < self.num_children:
+            if self.effective_connector == OR and votes < self.num_children:
                 to_promote.add(table)
             # If connector is AND and there is a filter that can match only
             # when there is a joinable row, then use INNER. For example, in
@@ -2670,8 +2670,8 @@ class JoinPromoter:
             #     (rel_a__col__icontains=Alex | rel_a__col__icontains=Russell)
             # then if rel_a doesn't produce any rows, the whole condition
             # can't match. Hence we can safely use INNER join.
-            if self.effective_connector == "AND" or (
-                self.effective_connector == "OR" and votes == self.num_children
+            if self.effective_connector == AND or (
+                self.effective_connector == OR and votes == self.num_children
             ):
                 to_demote.add(table)
             # Finally, what happens in cases where we have: