Tracking issue: InfluxQL support

[ShiKaiWi]

Describe This Problem

InfluxQL is widely used in the timeseries DBMS field, and CeresDB should support such a protocol for integration into the ecosystem.

Proposal

The work includes three parts:

• Write: the parser of line protocol;
• Query:
  • The parser for InfluxQL;
  • The planner for InfluxQL;

Additional Context

No response

[Rachelint]

Works of query part may can be divided into three part:

• Support statements compatible with sql statments (may be need some rewrites)
  • Wildcard and regrex in projection, from clause, group by clause.
  • From multiple tables.
• Support statements can be represent by udf
  Selector aggregate function.
  • Some special udf.
• Support statemetns only can be represent by extension logical node
  • Some special clause, such as slimit clause, soffset clause, fill clause.

[ShiKaiWi]

In favor of #698