feat: 添加自动转换py脚本
This commit is contained in:
dhb52
parent
fd8889e76a
commit
1d4bb4d563
8
sql/tools/.gitignore
vendored
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8
sql/tools/.gitignore
vendored
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# 忽略python虚拟环境
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.env
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.venv
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env/
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venv/
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ENV/
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env.bak/
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venv.bak/
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636
sql/tools/convertor.py
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636
sql/tools/convertor.py
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# encoding=utf8
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"""芋道系统数据库迁移工具
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Author: dhb52 (https://gitee.com/dhb52)
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pip install simple-ddl-parser
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"""
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import pathlib
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import re
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import time
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from abc import ABC, abstractmethod
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from typing import Dict, Tuple
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from simple_ddl_parser import DDLParser
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PREAMBLE = """/*
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Yudao Database Transfer Tool
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Source Server Type : MySQL
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Target Server Type : {db_type}
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Date: {date}
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*/
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"""
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def load_and_clean(sql_file: str) -> str:
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"""加载源 SQL 文件，并清理内容方便下一步 ddl 解析
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Args:
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sql_file (str): sql文件路径
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Returns:
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str: 清理后的sql文件内容
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"""
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REPLACE_PAIR_LIST = (
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(" CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci ", " "),
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(" KEY `", " INDEX `"),
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("UNIQUE INDEX", "UNIQUE KEY"),
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("b'0'", "'0'"),
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("b'1'", "'1'"),
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)
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content = open(sql_file).read()
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for replace_pair in REPLACE_PAIR_LIST:
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content = content.replace(*replace_pair)
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content = re.sub(r"ENGINE.*COMMENT", "COMMENT", content)
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content = re.sub(r"ENGINE.*;", ";", content)
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return content
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class Convertor(ABC):
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def __init__(self, src: str, db_type) -> None:
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self.src = src
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self.db_type = db_type
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self.content = load_and_clean(self.src)
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self.table_script_list = re.findall(r"CREATE TABLE [^;]*;", self.content)
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@abstractmethod
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def translate_type(self, type: str, size: None | int | Tuple[int]) -> str:
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"""字段类型转换
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Args:
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type (str): 字段类型
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size (None | int | Tuple[int]): 字段长度描述, 如varchar(255), decimal(10,2)
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Returns:
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str: 类型定义
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"""
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pass
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@abstractmethod
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def gen_create(self, table_ddl: Dict) -> str:
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"""生成 create 脚本
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Args:
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table_ddl (Dict): 表DDL
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Returns:
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str: 生成脚本
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"""
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pass
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@abstractmethod
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def gen_pk(self, table_name: str) -> str:
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"""生成主键定义
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Args:
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table_name (str): 表名
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Returns:
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str: 生成脚本
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"""
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pass
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@abstractmethod
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def gen_index(self, table_ddl: Dict) -> str:
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"""生成索引定义
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Args:
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table_ddl (Dict): 表DDL
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Returns:
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str: 生成脚本
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"""
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pass
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@abstractmethod
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def gen_comment(self, table_sql: str, table_name: str) -> str:
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"""生成字段/表注释
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Args:
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table_sql (str): 原始表SQL
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table_name (str): 表名
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Returns:
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str: 生成脚本
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"""
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pass
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@abstractmethod
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def gen_insert(self, table_name: str) -> str:
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"""生成 insert 语句块
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Args:
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table_name (str): 表名
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Returns:
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str: 生成脚本
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"""
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pass
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def print(self):
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"""打印转换后的sql脚本到终端"""
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print(
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PREAMBLE.format(
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db_type=self.db_type,
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date=time.strftime("%Y-%m-%d %H:%M:%S"),
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)
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)
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error_scripts = []
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for table_sql in self.table_script_list:
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ddl = DDLParser(table_sql.replace("`", "")).run()
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# 如果parse失败, 需要跟进
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if len(ddl) == 0:
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error_scripts.append(table_sql)
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continue
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table_ddl = ddl[0]
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table_name = table_ddl["table_name"]
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# 忽略 quartz 的内容
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if table_name.lower().startswith("qrtz"):
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continue
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# 为每个表生成个5个基本部分
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create = self.gen_create(table_ddl)
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pk = self.gen_pk(table_name)
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index = self.gen_index(table_ddl)
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comment = self.gen_comment(table_sql, table_name)
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inserts = self.gen_insert(table_name)
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# 组合当前表的DDL脚本
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script = f"""{create}
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{pk}
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{index}
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{comment}
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{inserts}
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"""
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# 清理
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script = re.sub("\n{3,}", "\n\n", script).strip() + "\n"
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print(script)
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# 将parse失败的脚本打印出来
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if error_scripts:
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for script in error_scripts:
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print(script)
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class PostgreSQLConvertor(Convertor):
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def __init__(self, src):
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super().__init__(src, "PostgreSQL")
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def translate_type(self, type, size):
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"""类型转换"""
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type = type.lower()
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if type == "varchar":
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return f"varchar({size})"
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if type == "int":
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return "int4"
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if type == "bigint" or type == "bigint unsigned":
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return "int8"
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if type == "datetime":
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return "timestamp"
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if type == "bit":
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return "bool"
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if type in ("tinyint", "smallint"):
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return "int2"
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if type == "text":
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return "text"
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if type in ("blob", "mediumblob"):
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return "bytea"
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if type == "decimal":
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return (
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f"numeric({','.join(str(s) for s in size)})" if len(size) else "numeric"
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)
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def gen_create(self, ddl: Dict) -> str:
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"""生成 create"""
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def _generate_column(col):
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name = col["name"].lower()
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if name == "deleted":
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return "deleted int2 NOT NULL DEFAULT 0"
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type = col["type"].lower()
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full_type = self.translate_type(type, col["size"])
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nullable = "NULL" if col["nullable"] else "NOT NULL"
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default = f"DEFAULT {col['default']}" if col["default"] is not None else ""
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return f"{name} {full_type} {nullable} {default}"
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table_name = ddl["table_name"].lower()
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columns = [f"{_generate_column(col).strip()}" for col in ddl["columns"]]
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script = f"""-- ----------------------------
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-- Table structure for {table_name}
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-- ----------------------------
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DROP TABLE IF EXISTS {table_name};
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CREATE TABLE {table_name} (
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{',\n '.join(columns)}
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);"""
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return script
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def gen_comment(self, table_sql, table_name) -> str:
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"""生成字段及表的注释"""
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script = ""
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for line in table_sql.split("\n"):
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match = re.match(r"^`([^`]+)`.* COMMENT '([^']+)'", line.strip())
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if match:
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script += f"COMMENT ON COLUMN {table_name}.{match.group(1)} IS '{match.group(2).replace('\\n', '\n')}';\n"
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match = re.search(r"COMMENT \= '([^']+)';", table_sql)
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table_comment = match.group(1) if match else None
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if table_comment:
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script += f"COMMENT ON TABLE {table_name} IS '{table_comment}';\n"
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return script
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def gen_pk(self, table_name) -> str:
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"""生成主键定义"""
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return f"ALTER TABLE {table_name} ADD CONSTRAINT pk_{table_name} PRIMARY KEY (id);\n"
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def gen_index(self, ddl) -> str:
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"""生成 index"""
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def generate_columns(columns):
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keys = [
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f"{col['name'].lower()}{" " + col['order'].lower() if col['order'] != 'ASC' else ''}"
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for col in columns[0]
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]
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return ", ".join(keys)
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script = ""
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for no, index in enumerate(ddl["index"], 1):
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columns = generate_columns(index["columns"])
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table_name = ddl["table_name"].lower()
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script += (
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f"CREATE INDEX idx_{table_name}_{no:02d} ON {table_name} ({columns});\n"
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)
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return script
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def gen_insert(self, table_name) -> str:
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"""生成 insert 语句，以及根据最后的 insert id+1 生成 Sequence"""
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PREFIX = f"INSERT INTO `{table_name}`"
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# 收集 `table_name` 对应的 insert 语句
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inserts = []
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for line in self.content.split("\n"):
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if line.startswith(PREFIX):
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head, tail = line.replace(PREFIX, "").split(" VALUES ", maxsplit=1)
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head = head.strip().replace("`", "").lower()
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tail = tail.strip().replace(r"\"", '"')
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script = f"INSERT INTO {table_name.lower()} {head} VALUES {tail}"
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# bit(1)数据转换
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script = script.replace("b'0'", "'0'").replace("b'1'", "'1'")
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inserts.append(script)
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## 生成 insert 脚本
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script = ""
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last_id = 0
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if inserts:
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script += f"""\n\n-- ----------------------------
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-- Records of {table_name.lower()}
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-- ----------------------------
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-- @formatter:off
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BEGIN;
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{'\n'.join(inserts)}
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COMMIT;
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-- @formatter:on"""
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match = re.search(r"VALUES \((\d+),", inserts[-1])
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if match:
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last_id = int(match.group(1))
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# 生成 Sequence
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script += (
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"\n\n"
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+ f"""DROP SEQUENCE IF EXISTS {table_name}_seq;
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CREATE SEQUENCE {table_name}_seq
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START {last_id + 1};"""
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)
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return script
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class OracleConvertor(Convertor):
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def __init__(self, src):
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super().__init__(src, "Oracle")
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def translate_type(self, type, size: None | int | Tuple[int]):
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"""类型转换"""
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type = type.lower()
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if type == "varchar":
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return f"varchar2({size if size < 4000 else 4000})"
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if type == "int":
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return "number"
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if type == "bigint" or type == "bigint unsigned":
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return "number"
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if type == "datetime":
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return "date"
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if type == "bit":
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return "number(1,0)"
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if type in ("tinyint", "smallint"):
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return "smallint"
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if type == "text":
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return "clob"
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if type in ("blob", "mediumblob"):
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return "blob"
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if type == "decimal":
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return (
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f"number({','.join(str(s) for s in size)})" if len(size) else "number"
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)
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def gen_create(self, ddl) -> str:
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"""生成 CREATE 语句"""
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def generate_column(col):
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name = col["name"].lower()
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if name == "deleted":
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return "deleted number(1,0) DEFAULT 0 NOT NULL"
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type = col["type"].lower()
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full_type = self.translate_type(type, col["size"])
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nullable = "NULL" if col["nullable"] else "NOT NULL"
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default = f"DEFAULT {col['default']}" if col["default"] is not None else ""
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return f"{'\"size\"' if name == "size" else name } {full_type} {default} {nullable}"
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table_name = ddl["table_name"].lower()
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columns = [f"{generate_column(col).strip()}" for col in ddl["columns"]]
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script = f"""-- ----------------------------
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-- Table structure for {table_name}
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-- ----------------------------
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CREATE TABLE {ddl['table_name'].lower()} (
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{',\n '.join(columns)}
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);"""
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# oracle INSERT '' 不能通过 NOT NULL 校验
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script = script.replace("DEFAULT '' NOT NULL", "DEFAULT '' NULL")
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return script
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def gen_comment(self, table_sql, table_name) -> str:
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script = ""
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for line in table_sql.split("\n"):
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match = re.search(r"`([^`]+)`.* COMMENT '([^']+)'", line)
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if match:
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script += f"COMMENT ON COLUMN {table_name}.{match.group(1)} IS '{match.group(2).replace('\\n', '\n')}';\n"
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match = re.search(r"COMMENT \= '([^']+)';", table_sql)
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table_comment = match.group(1) if match else None
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if table_comment:
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script += f"COMMENT ON TABLE {table_name} IS '{table_comment}';"
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return script
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def gen_pk(self, table_name) -> str:
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"""生成主键定义"""
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return f"ALTER TABLE {table_name} ADD CONSTRAINT pk_{table_name} PRIMARY KEY (id);\n"
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def gen_index(self, table_ddl) -> str:
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"""生成 INDEX 定义"""
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def generate_columns(columns):
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keys = [
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f"{col['name'].lower()}{" " + col['order'].lower() if col['order'] != 'ASC' else ''}"
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for col in columns[0]
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]
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return ", ".join(keys)
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script = ""
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for no, index in enumerate(table_ddl["index"], 1):
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columns = generate_columns(index["columns"])
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table_name = table_ddl["table_name"].lower()
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script += (
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f"CREATE INDEX idx_{table_name}_{no:02d} ON {table_name} ({columns});\n"
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)
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return script
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def gen_insert(self, table_name) -> str:
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"""拷贝 INSERT 语句"""
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PREFIX = f"INSERT INTO `{table_name}`"
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inserts = []
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for line in self.content.split("\n"):
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if line.startswith(PREFIX):
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head, tail = line.replace(PREFIX, "").split(" VALUES ", maxsplit=1)
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head = head.strip().replace("`", "").lower()
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tail = tail.strip().replace(r"\"", '"')
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script = f"INSERT INTO {table_name.lower()} {head} VALUES {tail}"
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# bit(1)数据转换
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script = script.replace("b'0'", "'0'").replace("b'1'", "'1'")
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# 对日期数据添加 TO_DATE 转换
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script = re.sub(
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r"('\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}')",
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r"to_date(\g<1>, 'SYYYY-MM-DD HH24:MI:SS')",
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script,
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)
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inserts.append(script)
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## 生成 insert 脚本
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script = ""
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last_id = 0
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if inserts:
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script += f"""\n\n-- ----------------------------
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-- Records of {table_name.lower()}
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-- ----------------------------
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-- @formatter:off
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{'\n'.join(inserts)}
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COMMIT;
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-- @formatter:on"""
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match = re.search(r"VALUES \((\d+),", inserts[-1])
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if match:
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last_id = int(match.group(1))
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# 生成 Sequence
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script += f"""
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CREATE SEQUENCE {table_name}_seq
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START WITH {last_id + 1};"""
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return script
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class SQLServerConvertor(Convertor):
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"""_summary_
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Args:
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Convertor (_type_): _description_
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"""
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def __init__(self, src):
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super().__init__(src, "Microsoft SQL Server")
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def translate_type(self, type, size):
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"""类型转换"""
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type = type.lower()
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if type == "varchar":
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return f"nvarchar({size if size < 4000 else 4000})"
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if type == "int":
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return "int"
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||||
if type == "bigint" or type == "bigint unsigned":
|
||||
return "bigint"
|
||||
if type == "datetime":
|
||||
return "datetime2"
|
||||
if type == "bit":
|
||||
return "varchar(1)"
|
||||
if type in ("tinyint", "smallint"):
|
||||
return "tinyint"
|
||||
if type == "text":
|
||||
return "nvarchar(max)"
|
||||
if type in ("blob", "mediumblob"):
|
||||
return "varbinary(max)"
|
||||
if type == "decimal":
|
||||
return (
|
||||
f"numeric({','.join(str(s) for s in size)})" if len(size) else "numeric"
|
||||
)
|
||||
|
||||
def gen_create(self, ddl: Dict) -> str:
|
||||
"""生成 create"""
|
||||
|
||||
def _generate_column(col):
|
||||
name = col["name"].lower()
|
||||
if name == 'id':
|
||||
return "id bigint NOT NULL PRIMARY KEY IDENTITY"
|
||||
if name == "deleted":
|
||||
return "deleted bit DEFAULT 0 NOT NULL"
|
||||
|
||||
type = col["type"].lower()
|
||||
full_type = self.translate_type(type, col["size"])
|
||||
nullable = "NULL" if col["nullable"] else "NOT NULL"
|
||||
default = f"DEFAULT {col['default']}" if col["default"] is not None else ""
|
||||
return f"{name} {full_type} {default} {nullable}"
|
||||
|
||||
table_name = ddl["table_name"].lower()
|
||||
columns = [f"{_generate_column(col).strip()}" for col in ddl["columns"]]
|
||||
script = f"""-- ----------------------------
|
||||
-- Table structure for {table_name}
|
||||
-- ----------------------------
|
||||
DROP TABLE IF EXISTS {table_name};
|
||||
CREATE TABLE {table_name} (
|
||||
{',\n '.join(columns)}
|
||||
)
|
||||
GO"""
|
||||
|
||||
return script
|
||||
|
||||
def gen_comment(self, table_sql, table_name) -> str:
|
||||
"""生成字段及表的注释"""
|
||||
|
||||
script = ""
|
||||
for line in table_sql.split("\n"):
|
||||
match = re.match(r"^`([^`]+)`.* COMMENT '([^']+)'", line.strip())
|
||||
if match:
|
||||
script += f"""EXEC sp_addextendedproperty
|
||||
'MS_Description', N'{match.group(2).replace('\\n', '\n')}',
|
||||
'SCHEMA', N'dbo',
|
||||
'TABLE', N'{table_name}',
|
||||
'COLUMN', N'{match.group(1)}'
|
||||
GO
|
||||
|
||||
"""
|
||||
|
||||
match = re.search(r"COMMENT \= '([^']+)';", table_sql)
|
||||
table_comment = match.group(1) if match else None
|
||||
if table_comment:
|
||||
script += f"""EXEC sp_addextendedproperty
|
||||
'MS_Description', N'{table_comment}',
|
||||
'SCHEMA', N'dbo',
|
||||
'TABLE', N'{table_name}'
|
||||
GO
|
||||
|
||||
"""
|
||||
|
||||
return script
|
||||
|
||||
def gen_pk(self, table_name) -> str:
|
||||
"""生成主键定义"""
|
||||
return ""
|
||||
|
||||
def gen_index(self, ddl) -> str:
|
||||
"""生成 index"""
|
||||
|
||||
def generate_columns(columns):
|
||||
keys = [
|
||||
f"{col['name'].lower()}{" " + col['order'].lower() if col['order'] != 'ASC' else ''}"
|
||||
for col in columns[0]
|
||||
]
|
||||
return ", ".join(keys)
|
||||
|
||||
script = ""
|
||||
for no, index in enumerate(ddl["index"], 1):
|
||||
columns = generate_columns(index["columns"])
|
||||
table_name = ddl["table_name"].lower()
|
||||
script += f"CREATE INDEX idx_{table_name}_{no:02d} ON {table_name} ({columns})\nGO\n"
|
||||
|
||||
return script
|
||||
|
||||
def gen_insert(self, table_name) -> str:
|
||||
"""生成 insert 语句，以及根据最后的 insert id+1 生成 Sequence"""
|
||||
|
||||
PREFIX = f"INSERT INTO `{table_name}`"
|
||||
|
||||
# 收集 `table_name` 对应的 insert 语句
|
||||
inserts = []
|
||||
for line in self.content.split("\n"):
|
||||
if line.startswith(PREFIX):
|
||||
head, tail = line.replace(PREFIX, "").split(" VALUES ", maxsplit=1)
|
||||
head = head.strip().replace("`", "").lower()
|
||||
tail = tail.strip().replace(r"\"", '"')
|
||||
# SQLServer: 字符串前加N，hack，是否存在替换字符串内容的风险
|
||||
tail = tail.replace(", '", ", N'").replace("VALUES ('", "VALUES (N')")
|
||||
script = f"INSERT INTO {table_name.lower()} {head} VALUES {tail}"
|
||||
# bit(1)数据转换
|
||||
script = script.replace("b'0'", "'0'").replace("b'1'", "'1'")
|
||||
# 删除 insert 的结尾分号
|
||||
script = re.sub(";$", r"\nGO", script)
|
||||
inserts.append(script)
|
||||
|
||||
## 生成 insert 脚本
|
||||
script = ""
|
||||
if inserts:
|
||||
script += f"""\n\n-- ----------------------------
|
||||
-- Records of {table_name.lower()}
|
||||
-- ----------------------------
|
||||
-- @formatter:off
|
||||
BEGIN TRANSACTION
|
||||
GO
|
||||
SET IDENTITY_INSERT {table_name.lower()} ON
|
||||
GO
|
||||
{'\n'.join(inserts)}
|
||||
SET IDENTITY_INSERT {table_name.lower()} OFF
|
||||
GO
|
||||
COMMIT
|
||||
GO
|
||||
-- @formatter:on"""
|
||||
|
||||
return script
|
||||
|
||||
|
||||
def main():
|
||||
sql_file = pathlib.Path('../mysql/ruoyi-vue-pro.sql').resolve().as_posix()
|
||||
# convertor = PostgreSQLConvertor(sql_file)
|
||||
# convertor = OracleConvertor(sql_file)
|
||||
convertor = SQLServerConvertor(sql_file)
|
||||
convertor.print()
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
Loading…
Reference in New Issue
Block a user