Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) Warning Some

value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) Warning Some Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications

Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) Warning Some

Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) Warning Some

DateTimeField() value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) 1.6. Models Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications

Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications DateTimeField() value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) Warning: Some

Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications DateTimeField() value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) Warning: Some

value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) Warning Some Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications

DateTimeField() value = IntegerField() class Meta: primary_key = False This will yield the following DDL: CREATE TABLE "mydata" ( "timestamp" DATETIME NOT NULL, "value" INTEGER NOT NULL ) Warning: Some Operations that alter your data like this are collectively known as Data Manipulation Language, or DML. In previous sections, we returned to you the results of the query you’ve performed. Since modifications

StringField(Field): def __init__(self, name=None, primary_key=False, default=None, ddl='varchar(100)'): super().__init__(name, ddl, primary_key, default) 注意到 Model 只是一个基类，如何将具体的子类如 User 的映射信息读取 出来呢？答案就是通过 default=next_id, ddl='varchar(50)') email = StringField(ddl='varchar(50)') passwd = StringField(ddl='varchar(50)') admin = BooleanField() name = StringField(ddl='varchar(50)') StringField(ddl='varchar(500)') created_at = FloatField(default=time.time) class Blog(Model): __table__ = 'blogs' id = StringField(primary_key=True, default=next_id, ddl='varchar(50)')