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+## Summary
+<!--Explain briefly what goes wrong and explain why you believe this is a bug and not the intended behavior of SQLite (if it is not a crash).-->**No review yet**
+
+## Minimized query
+
+```sql
+PRAGMA reverse_unordered_selects;
+PRAGMA secure_delete = ON;
+PRAGMA automatic_index = TRUE;
+.stats vmstep
+CREATE TABLE t1(a, b, c, d);
+CREATE UNIQUE INDEX i1 ON t1(b, c);
+CREATE UNIQUE INDEX i2 ON t1(d COLLATE nocase);
+CREATE TABLE t2(x INTEGER PRIMARY KEY, y);
+CREATE TABLE t3(c1 PRIMARY KEY NOT NULL, c2 NOT NULL);
+CREATE INDEX i3 ON t3(c2);
+CREATE TABLE t4(a, b NOT NULL, c NOT NULL, d NOT NULL);
+CREATE UNIQUE INDEX t4i1 ON t4(b, c);
+CREATE UNIQUE INDEX t4i2 ON t4(d COLLATE nocase);
+SELECT DISTINCT c FROM t1 WHERE b = ?;
+SELECT DISTINCT c FROM t1 WHERE b IN (lower(NULL),jsonb_array(2, 2, NULL));
+SELECT DISTINCT a, b, c COLLATE nocase FROM t1
+
+```
+
+## Actual output
+
+```sql
+0
+1
+VM-steps: 30
+VM-steps: 26
+VM-steps: 26
+VM-steps: 28
+VM-steps: 39
+VM-steps: 26
+VM-steps: 28
+VM-steps: 26
+VM-steps: 26
+VM-steps: 8
+VM-steps: 7
+```
+
+## Expectation
+
+```sql
+
+```
+
+## Flag
+
+```
+
+```
+