Pony is an advanced object-relational mapper. The most interesting feature of Pony is its ability to write queries to the database using Python generator expressions and lambdas. P...

Apache Calcite 是一款开源SQL解析工具, 可以将各种SQL语句解析成抽象语法术AST(Abstract Syntax Tree), 之后通过操作AST就可以把SQL中所要表达的算法与关系体现在具体代码之中。Apache Calcite is a dynamic data management framework. It contains ma...