[feature]: create table

[stone1100]

Is your feature request related to a problem? Please describe.
Schema can be predefined by creating table statement.

create table (
host tag,
region tag,
cpu_load gauge,
cpu_usage gauge
)

Describe the solution you'd like
A clear and concise description of what you want to happen.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[joyant]

Do you mean?

create table [if not exist] table_name 
(
    tag_definition [, tag_definition] ...
    field_definition [, field_definition] ...
)

tag_definition:
    tag_name tag
    
field_definition:
    field_name {min | max | first | last | sum}

For example:

create table if not exist cpu 
(
    host tag,
    ip tag,
    load last,
    temperature max
);

[stone1100]

Yes.
The current SQL parsing is not flexible. Currently parsing is being refactored, and this feature depends on #1015 .