Fixed #31836 -- Dropped support for JSONField __contains and __contained_by lookups on SQLite.

The current implementation works only for basic examples without
supporting nested structures and doesn't follow "the general principle
that the contained object must match the containing object as to
structure and data contents, possibly after discarding some
non-matching array elements or object key/value pairs from the
containing object".

1 files changed, 0 insertions, 10 deletions

diff --git a/django/db/backends/sqlite3/base.py b/django/db/backends/sqlite3/base.py
index 26863d282f..8a105d4f35 100644
--- a/django/db/backends/sqlite3/base.py
+++ b/django/db/backends/sqlite3/base.py
@@ -5,7 +5,6 @@ import datetime
 import decimal
 import functools
 import hashlib
-import json
 import math
 import operator
 import re
@@ -235,7 +234,6 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         create_deterministic_function('DEGREES', 1, none_guard(math.degrees))
         create_deterministic_function('EXP', 1, none_guard(math.exp))
         create_deterministic_function('FLOOR', 1, none_guard(math.floor))
-        create_deterministic_function('JSON_CONTAINS', 2, _sqlite_json_contains)
         create_deterministic_function('LN', 1, none_guard(math.log))
         create_deterministic_function('LOG', 2, none_guard(lambda x, y: math.log(y, x)))
         create_deterministic_function('LPAD', 3, _sqlite_lpad)
@@ -601,11 +599,3 @@ def _sqlite_lpad(text, length, fill_text):
 @none_guard
 def _sqlite_rpad(text, length, fill_text):
     return (text + fill_text * length)[:length]
-
-
-@none_guard
-def _sqlite_json_contains(haystack, needle):
-    target, candidate = json.loads(haystack), json.loads(needle)
-    if isinstance(target, dict) and isinstance(candidate, dict):
-        return target.items() >= candidate.items()
-    return target == candidate