File: instant_alter_limit%2C8k.rdiff

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--- instant_alter_limit.result
+++ instant_alter_limit,8k.reject
@@ -6,6 +6,28 @@
 ENGINE=InnoDB;
 INSERT INTO t VALUES(1,2,3,4,5);
 SET innodb_strict_mode = OFF;
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
 SELECT * FROM t;
 b	d	a	c	e
 NULL	NULL	1	NULL	NULL
@@ -13,11 +35,17 @@
 ADD COLUMN b INT, ALGORITHM=INSTANT;
 ERROR 0A000: ALGORITHM=INSTANT is not supported for this operation. Try ALGORITHM=INPLACE
 ALTER TABLE t CHANGE COLUMN b beta INT AFTER a, ALGORITHM=INSTANT;
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
 ALTER TABLE t DROP e, DROP c, DROP d, ALGORITHM=INSTANT;
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
 SELECT * FROM t;
 a	beta
 1	NULL
 ALTER TABLE t DROP COLUMN beta, ALGORITHM=INSTANT;
+Warnings:
+Warning	139	Row size too large (> 4030). Changing some columns to TEXT or BLOB may help. In current row format, BLOB prefix of 0 bytes is stored inline.
 ALTER TABLE t ADD COLUMN b INT NOT NULL, ALGORITHM=INSTANT;
 ERROR 0A000: ALGORITHM=INSTANT is not supported for this operation. Try ALGORITHM=INPLACE
 SELECT variable_value-@old_instant instants
@@ -44,6 +72,13 @@
 FROM information_schema.global_status
 WHERE variable_name = 'innodb_instant_alter_column';
 instants
-502
+492
 DROP TABLE t;
+#
+# MDEV-21787 Alter table failure tries to access uninitialized column
+#
+CREATE TABLE t1(f1 INT PRIMARY KEY, f2 TEXT GENERATED ALWAYS AS (SUBSTR(f4, 1, 400)), f3 VARCHAR(500), f4 TEXT)ENGINE=InnoDB ROW_FORMAT=Compact;
+ALTER TABLE t1 ADD UNIQUE KEY (f2(9));
+ALTER TABLE t1 ADD COLUMN f5 TEXT, ALGORITHM=INPLACE;
+DROP TABLE t1;
 ALTER DATABASE test CHARACTER SET utf8mb4 COLLATE utf8mb4_uca1400_ai_ci;