wrong error report run update stmt

[xiongjiwei]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

create view v as select 1 as b;
create table t (a int);

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

update v, t set a=2;
Query OK, 0 rows affected (0.02 sec)
Rows matched: 0  Changed: 0  Warnings: 0

3. What did you see instead (Required)

(1105, 'update view v is not supported now.')

4. What is your TiDB version? (Required)

[ti-srebot]

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Bug

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1. Root Cause Analysis (RCA) (optional)

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5. Affected versions

6. Fixed versions