when should i go for join and when should i go for concatenation can u please share me brief

[#1]

can u pls help me guys

[Colin-Albert]

ApplyMap is better than join in most cases

http://community.qlik.com/blogs/qlikviewdesignblog/2012/09/18/one-favorite-function-applymap

[maxgro]

it depends on what you want to get

see attachment for difference