# Conditional compile-time verified queries with SQLx
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[<img alt="crates.io" src="https://img.shields.io/crates/v/sqlx-conditional-queries.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/sqlx-conditional-queries)
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This crate provides a macro for generating conditional compile-time verified queries while using the SQLx `query_as!` macro.
This allows you to have parts of the query conditional in ways in which your chosen database doesn't allow by emitting multiple `query_as!` invocations that are chosen over by a match statement.
The currently supported SQLx version is 0.9.
## Variant growth
Note that this means that we end up emitting as many `query_as!` invocations as there are elements in the [Cartesian product] of all of the different conditionals.
This means that the number of variants increase very rapidly!
[Cartesian product]: https://en.wikipedia.org/wiki/Cartesian_product
## Features
Which database type should be supported is specified by activating one of the following features.
If more than one feature is activated then the first one in the list takes precedence.
- `postgres`
- `mysql`
- `sqlite`
#### License
<sup>
Licensed under either of <a href="LICENSE-APACHE">Apache License, Version 2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
</sup>
<br>
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Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this crate by you,
as defined in the Apache-2.0 license,
shall be dual licensed as above, without any additional terms or conditions.
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