Get Statement from Query

Description

I would like to get the raw sql statement defined in a .sq file and validated/generated with the compiler.

Usecase 1: Having a class with more than 256 attributes. Instead defining the raw query in Kotlin code and validate the query at runtime (eg wrong typed names), it would be nice to validate it with SQLDelight. Then you can use SqlDriver.executeQuery with a custom binders block. Usecase 2: Using other APIs, which requires a SQL statement, eg Postgres CopyManager. Same reason, the validation can be done by the compiler.

// sq file
filter:
SELECT * FROM foo WHERE name = ?;

// kt file
val rawStatement = queries.filter().statement // SELECT * FROM foo WHERE name = ?;
driver.executeQuery(null, rawStatement, ...)

[hfhbd]

The new QueryResult async api is nice, without it it was impossible to return R in executeQuery, now I can use:

override fun <R> executeQuery(
        identifier: Int?,
        sql: String,
        mapper: (SqlCursor) -> R,
        parameters: Int,
        binders: (SqlPreparedStatement.() -> Unit)?
    ): QueryResult<R> {
        lastStatement = sql
        return QueryResult.AsyncValue { 
            error("Not supported")
        }
    }

[AlecStrong]

once you have an instance of Query it isn’t, so that proposed API would work:

selectWithArgs:
SELECT *
FROM test
WHERE args IN ?;

val myQuery = myQueries.selectWithArgs("foo", "bar")
myQuery.rawSql