Struct SqlGenerator 

pub struct SqlGenerator {
    pub db_type: DatabaseType,
}

SQL 生成器

Fields

db_type: DatabaseType

数据库类型

Implementations

impl SqlGenerator

pub fn new(db_type: DatabaseType) -> Self

创建新的 SQLGenerator

pub fn generate_column_def(&self, column_type: &ColumnType) -> String

生成列定义的 SQL（仅类型部分，用于测试）

pub fn generate_create_table_sql(&self, table: &Table) -> Result<String, String>

生成创建表的 SQL

pub fn generate_create_index_sql(&self, index: &Index) -> Result<String, String>

生成创建索引的 SQL

pub fn generate_drop_table_sql( &self, table_name: &str, ) -> Result<String, String>

生成删除表的 SQL

pub fn generate_add_column_sql( &self, table_name: &str, column: &Column, ) -> Result<String, String>

生成添加列的 SQL

pub fn generate_drop_column_sql( &self, table_name: &str, column_name: &str, ) -> Result<String, String>

生成删除列的 SQL

pub fn generate_migration_sql( &self, migration: &Migration, ) -> Result<String, String>

生成迁移的完整 SQL

Trait Implementations

impl Clone for SqlGenerator

fn clone(&self) -> SqlGenerator

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SqlGenerator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.