Provide API for SQL Dry-Run and Dry-Plan

[goldmedal]

Description

Provide a API to get the result metadata or inner SQL without executing.

Dry Run

Get the result metadata without executing SQL

GET /v1/mdl/dry-run

Sample Body

{
    "manifest" : {
        "catalog": "canner-cml",
        "schema": "tpch_tiny",
        "models": [
            {
                "name": "Orders",
                "refSql": "select * from \"memory\".\"tpch\".\"orders\"",
                "columns": [
                    {
                        "name": "o_orderkey",
                        "type": "integer"
                    },
                    {
                        "name": "o_orderdate",
                        "type": "date"
                    
                    }
                ]
            }
        ]
    },
    "sql": "select \"o_orderkey\", \"o_orderdate\" from \"Orders\" wehre \"o_orderdate\" > ?",
}

• manifest: It's optional. If we don't carry it, use deployed MDL in default.
• sql: It's required. The sql will be dry-run.

Dry Plan

Get the dry-planned SQL which is a SQL can be executed in the data source side.

GET /v1/mdl/dry-plan

Sample Body

{
    "manifest" : {
        "catalog": "canner-cml",
        "schema": "tpch_tiny",
        "models": [
            {
                "name": "Orders",
                "refSql": "select * from \"memory\".\"tpch\".\"orders\"",
                "columns": [
                    {
                        "name": "o_orderkey",
                        "type": "integer"
                    },
                    {
                        "name": "o_orderdate",
                        "type": "date"
                    
                    }
                ]
            }
        ]
    },
    "sql": "select \"o_orderkey\", \"o_orderdate\" from \"Orders\" wehre \"o_orderdate\" > ?",
    "modelingOnly": false
}

• manifest: It's optional. If we don't carry it, use deployed MDL in default.
• sql: It's required. The sql will be planned.
• modelingOnly: It's optional. Enable it to get the SQL without translating by SqlDialect.