Describe the bug

HI，I have a table，and a COLUMN named op, this field data type is "string",when i update it,.
for example ，update table set op='u' where name='test';
this sql return the ERROR: inconvertible types: CHAR -> STRING [from=, to=op];

the ”PostgreSQL wire protocol“ way and the ”Web Console“ way return the same error

How can i update this success ?

Thank you

To reproduce

No response

Expected Behavior

the sql "update table set op='u' where name='test'; “ can be success when the field data type is string

Environment

- **QuestDB version**: 7.0.0
- **OS**:centos7.0
- **Browser**: chrome

Additional context

No response