Kuery ClientWrite SQL as it is

A Kotlin/JVM database client built on Spring Data — interpolated runtime values become bind parameters via a compiler plugin

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Why Kuery Client?

GitHub

♥️

Love SQL

ORM libraries are convenient, but they each require learning their own DSL, which we believe is a steep cost. Kuery Client emphasizes writing SQL as it is.

🛡️

Safe by design

Interpolated runtime values are converted into bind parameters by the compiler plugin, so the normal SQL-building path never concatenates them into the SQL text.

✅

Compile-time checks

The compiler plugin warns when a SQL string cannot be converted safely, and can optionally validate SQL syntax — mistakes surface at compile time, not in production.

🍃

Built on Spring Data

Kuery Client is implemented on top of spring-data-r2dbc and spring-data-jdbc. Use whichever you prefer. You can keep using Spring's ecosystem as is, such as @Transactional.

🔭

Observability

It supports Micrometer Observation, so you can collect and customize metrics, tracing, and logging.

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Extensible

When dealing with complex data schemas, you often want to share common query logic. Kotlin's extension functions make this easy.