Scala中三个引号应用

双引号

1.换行需要加/n ,比如:

val s = "select * from user \n where user_id >100"
println(s)

控制台输出结果:
select * from user
where user_id >100

三引号

1:中间字符串可以直接回车换行

val s ="""select * from user
         where user_id >100
         and age <18 """
println(s)

控制台输出结果:
select * from user
where user_id >100
and age <18

2:保留代码块原意,中间可以有双引号

val s ="""select * from user
         where user_id >100
         and name="dudu" """
println(s)

控制台输出结果:
select * from user
where user_id >100
and name=“dudu”

3:格式化

在idea中输入三个双引号,回车,行头会出现|,回车一次,会出现一个|,结尾是.stripMargin

val s =
      """select *
        |from user
        |where user_name="dudu"
        |and age = 18
      """.stripMargin
    println(s)

控制台输出结果:
select *
from user
where user_name=“dudu”
and age = 18