File: index-prefix.txt

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golang-ariga-atlas 0.7.2-2
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apply 1.hcl
cmpshow users 1.sql

# Change prefix.
apply 2.hcl
cmpshow users 2.sql

# Drop prefix.
apply 3.hcl
cmpshow users 3.sql

-- 1.hcl --
schema "$db" {}

table "users" {
  schema = schema.$db
  column "name" {
    type = varchar(255)
  }
  index "user_name" {
    on {
      column = column.name
      prefix = 64
    }
  }
}

-- 1.sql --
CREATE TABLE `users` (
  `name` varchar(255) NOT NULL,
  KEY `user_name` (`name`(64))
)

-- 2.hcl --
schema "$db" {}

table "users" {
  schema = schema.$db
  column "name" {
    type = varchar(255)
  }
  index "user_name" {
    on {
      column = column.name
      prefix = 128
    }
  }
}

-- 2.sql --
CREATE TABLE `users` (
  `name` varchar(255) NOT NULL,
  KEY `user_name` (`name`(128))
)

-- 3.hcl --
schema "$db" {}

table "users" {
  schema = schema.$db
  column "name" {
    type = varchar(128)
  }
  index "user_name" {
    on {
      column = column.name
    }
  }
}

-- 3.sql --
CREATE TABLE `users` (
  `name` varchar(128) NOT NULL,
  KEY `user_name` (`name`)
)