CASE WHEN 是一个强大的条件表达式，允许我们在 SQL 查询中根据不同的条件返回不同的值。它在数据处理、报表生成等方面有着广泛的应用。本文将深入探讨 CASE WHEN 的语法、用法以及各种应用场景，并通过丰富的示例代码帮助你更好地掌握这一功能。 一、引言 1. 主题概述 CASE WHEN 语句是 SQL 中一种 ...

If you want to know what-all motherboards are used in a product line, in classic (non-CTE or Common Table Expression) SQL you have to walk tables and issue queries in multiple steps.

Evaluates a set of `Boolean` expressions to determine the result. Is the expression returned if no comparison operation evaluates to `true`. If this argument is omitted and no comparison operation ...

Evaluates a set of `Boolean` expressions to determine the result. Is the expression returned if no comparison operation evaluates to `true`. If this argument is omitted and no comparison operation ...

During IC design, worst-case simulations help designers account for variations in characteristics of PNP and NPN transistors and base and polysilicon resistors. These four classes of devices alone ...