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part1/results/2/bug_5bfa8387-29bc-455d-9d73-69771b6b426c_unexpected_error.md

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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
+CREATE TABLE T (
+  a TEXT,
+  b TEXT,
+  c REAL
+);
+INSERT INTO T VALUES ('a','b',if(1, 1.0)), ('a','c',-1.0), ('b','d',0.0);
+SELECT
+COALESCE(a,'e') AS d,
+COALESCE(b,'f') AS e,
+SUM(c) AS f
+FROM T
+GROUP BY a,b;
+CREATE TABLE T1 (
+  a INTEGER,
+  b TEXT
+);
+CREATE TABLE T2 (
+  a INTEGER,
+  b TEXT
+);
+INSERT INTO T1 VALUES (1,'a'),(2,'b');
+INSERT INTO T2 VALUES (1,'c'),(1,'d');
+SELECT T1.b,
+(
+  SELECT GROUP_CONCAT(b,',')
+  FROM T2
+  WHERE T2.a=T1.a
+) AS c
+FROM T1;
+INSERT INTO T1 DEFAULT VALUES;
+INSERT INTO T2 VALUES (NULL, NULL);
+UPDATE T2 SET b = 74 WHERE b BETWEEN 0 AND 100;
+INSERT INTO T2 SELECT * FROM T2;
+UPDATE T SET a = -84 WHERE +rowid = 1;
+SELECT * FROM T2;
+SELECT * FROM T;
+```
+
+## Actual output
+
+```sql
+a|c,d
+b|
+1|c
+1|d
+|
+1|c
+1|d
+|
+```
+
+## Expectation
+
+```sql
+
+```
+
+## Flag
+
+```
+
+```
+