Basic support for update statement

[YaroslavLitvinov]

Failed to update table data using following update statement :
UPDATE public.public.simple_int SET a=6 WHERE a=5;

Following query unexpectedly return 0:
select count(*) from public.public.simple_int where a=6;

Test failed:
https://github.com/Embucket/compatibility-test-suite/blob/main/tests/slt/sql/simple/test_fqn.slt#L8

[rampage644]

@osipovartem Was there an issue you were working on to have UPDATE stmt support added?

[camuel]

do we support update????

[YaroslavLitvinov]

do we support update????

It seems we are not, at least on Datafusion layer