update plan's inline projection may cause column resolution error

[pcqz]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

CREATE TABLE tb1 (cid INT, code INT, class VARCHAR(10));
CREATE TABLE tb2 (cid INT, code INT, class VARCHAR(10));
INSERT INTO tb1 (cid, code, class) VALUES(1, 1, 'old');
INSERT INTO tb2 (cid, code, class) VALUES(1, 1, 'new');
UPDATE tb1, (SELECT code AS cid, code, MAX(class) AS class FROM tb2 GROUP BY code) tb3 SET tb1.cid = tb3.cid, tb1.code = tb3.code, tb1.class = tb3.class;

2. What did you expect to see? (Required)

Update executes successfully.

3. What did you see instead (Required)

[err="runtime error: index out of range [0] with length 0"] [stack="github.com/pingcap/tidb/server.(*clientConn).Run.func1\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/server/conn.go:1075\nruntime.gopanic\n\t/usr/local/go/src/runtime/panic.go:884\ngithub.com/pingcap/tidb/executor.(*ExecStmt).Exec.func1\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/executor/adapter.go:463\nruntime.gopanic\n\t/usr/local/go/src/runtime/panic.go:884\nruntime.goPanicIndex\n\t/usr/local/go/src/runtime/panic.go:113\ngithub.com/pingcap/tidb/util/chunk.(*Column).IsNull\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/util/chunk/column.go:169\ngithub.com/pingcap/tidb/util/chunk.Row.IsNull\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/util/chunk/row.go:218\ngithub.com/pingcap/tidb/util/chunk.Row.GetDatumWithBuffer\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/util/chunk/row.go:162\ngithub.com/pingcap/tidb/util/chunk.Row.GetDatumRowWithBuffer\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/util/chunk/row.go:125\ngithub.com/pingcap/tidb/util/chunk.Row.GetDatumRow\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/util/chunk/row.go:119\ngithub.com/pingcap/tidb/executor.(*UpdateExec).updateRows\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/executor/update.go:292\ngithub.com/pingcap/tidb/executor.(*UpdateExec).Next\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/executor/update.go:239\ngithub.com/pingcap/tidb/executor.Next\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/executor/executor.go:326\ngithub.com/pingcap/tidb/executor.(*ExecStmt).next\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/executor/adapter.go:1202\ngithub.com/pingcap/tidb/executor.(*ExecStmt).handleNoDelayExecutor\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/executor/adapter.go:947\ngithub.com/pingcap/tidb/executor.(*ExecStmt).handleNoDelay\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/executor/adapter.go:773\ngithub.com/pingcap/tidb/executor.(*ExecStmt).Exec\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/executor/adapter.go:568\ngithub.com/pingcap/tidb/session.runStmt\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/session/session.go:2394\ngithub.com/pingcap/tidb/session.(*session).ExecuteStmt\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/session/session.go:2251\ngithub.com/pingcap/tidb/server.(*TiDBContext).ExecuteStmt\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/server/driver_tidb.go:294\ngithub.com/pingcap/tidb/server.(*clientConn).handleStmt\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/server/conn.go:2094\ngithub.com/pingcap/tidb/server.(*clientConn).handleQuery\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/server/conn.go:1885\ngithub.com/pingcap/tidb/server.(*clientConn).dispatch\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/server/conn.go:1372\ngithub.com/pingcap/tidb/server.(*clientConn).Run\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/server/conn.go:1153\ngithub.com/pingcap/tidb/server.(*Server).onConn\n\t/home/jenkins/agent/workspace/build-common/go/src/github.com/pingcap/tidb/server/server.go:677"]

4. What is your TiDB version? (Required)

v7.1.1, master