摘要:
逻辑运算 AND,OR,NOT ......where 表达式1 and 表达式2; ......where 表达式2 and 表达式1; SQL优化: SQL在解析where时是从右向左解析的。所以:and 时应该将易假的放在右侧,or时应该将易真的值放在右侧 order by order by 阅读全文
摘要:
var v = 123; function foo(){ var v = 456; function inner(){ console.log(v) } return inner } result = foo() console.log(result()) # 问输出结果://456 Name='root'; Age = 18; funct... 阅读全文