一、定义：

from django.db import models# Create your models here.class Person(models.Model):    first_name = models.CharField(max_length=100)    last_name  = models.CharField(max_length=100)    class Meta():        index_together = ["first_name", "last_name"]

 

二、生成目标SQL：

python3 manage.py makemigrations pollsMigrations for 'polls':  polls/migrations/0001_initial.py    - Create model Person    - Alter index_together for person (1 constraint(s))

 

 

三、查看目标SQL：

python3 manage.py sqlmigrate polls 0001BEGIN;---- Create model Person--CREATE TABLE "polls_person" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "first_name" varchar(100) NOT NULL, "last_name" varchar(100) NOT NULL);---- Alter index_together for person (1 constraint(s))--CREATE INDEX "polls_person_first_name_last_name_0c87f2f4_idx" ON "polls_person" ("first_name", "last_name");COMMIT;