Numerical Types, Functions, and Operators Mathematical functions Bitwise functions String parsing Numerical Types, Functions, and Operators int16 16-bit integer int32 32...

Model _meta API Field access API Retrieving a single field instance of a model by name Retrieving all field instances of a model Model _meta API class Options The model ...

Model _meta API Field access API Retrieving a single field instance of a model by name Retrieving all field instances of a model Model _meta API class Options The model _...

Model _meta API Field access API Retrieving a single field instance of a model by name Retrieving all field instances of a model Model _meta API class Options The model ...

Callbacks 注册 Callback 删除 Callback 替换 Callback 注册带顺序的 Callback 预定义 Callback 插件 Callbacks GORM 自身也是基于 Callbacks 的，包括 Create 、Query 、Update 、Delete 、Row 、Raw 。此外，您也完全可以根据自己...

加载器与关系 Model Loader Loader Expression Many-to-One Relationship Self Referencing Other Relationships Advanced Usage of Loaders 加载器与关系 Loaders are used to load database row...

package sql Overview Index Examples Package files Subdirectories version: 1.10 package sql import "database/sql" Overview Package sql provides a generic interface a...

声明模型 简单示例 一对多(one-to-many)关系 多对多(many-to-many)关系 声明模型 通常下，Flask-SQLAlchemy 的行为就像一个来自 declarative 扩展配置正确的 declarative 基类。因此，我们强烈建议您阅读 SQLAlchemy 文档以获取一个全面的参考。尽管如此，我们这里还是给出了...

Disable Default Transaction Transaction Nested Transactions Control the transaction manually A Specific Example SavePoint, RollbackTo Disable Default Transaction GORM perfo...

The DAL: A quick tour The DAL: A quick tour web2py defines the following classes that make up the DAL: The DAL object represents a database connection. For example: db = D...