-- 1. CTE BÁSICA — Ventas por región WITH ventas_por_region AS ( SELECT region, COUNT(*) as total_ventas, SUM(monto) as total_monto, AVG(monto) as promedio_monto FROM ventas GROUP BY region ) SELECT * ...
A PySpark SQL query builder that generates SQL for 32+ database dialects using polyglot-sql as its transpilation engine. Write PySpark DataFrame code and generate dialect-specific SQL — no Spark ...
今天就跟大家讲讲八个能让性能大幅度提升优雅的SQL语句，咱不讲虚的基本上都是大多人踩过的坑。 写SQL多年最尴尬的事，莫过于隔段时间回看自己写的代码时，直呼不忍直视。多数人写SQL只追求能正常运行，忽视可读性、执行效率和后期维护性，线上卡顿 ...
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