python: datatype convert

 

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# encoding: utf-8 # 版权所有 2024 ©涂聚文有限公司 # 许可信息查看：言語成了邀功盡責的功臣，還需要行爲每日來值班嗎 # 描述： 数据类型换 # https://learn.microsoft.com/en-us/sql/machine-learning/python/python-libraries-and-data-types?view=sql-server-ver16 # sql server https://docs.devart.com/python/sqlserver/data-types.htm # sql server https://zontroy.com/mssql-to-python-type-mapping # mysql https://zontroy.com/mysql-to-python-type-mapping # mysql https://docs.devart.com/python/mysql/data-types.htm # postgresql https://zontroy.com/postgresql-to-python-type-mapping # postgresql https://docs.devart.com/python/postgresql/data-types.htm # oracle  https://zontroy.com/oracle-to-python-type-mapping # oracle https://docs.devart.com/python/oracle/data-types.htm # sqlite https://docs.devart.com/python/sqlite/data-types.htm # datatype convert # Author    : geovindu,Geovin Du 涂聚文. # IDE       : PyCharm 2023.1 python 3.11 # OS        : windows 10 # Datetime  : 2024/12/9 21:39 # User      : geovindu # Product   : PyCharm # Project   : pyGenerator # File      : datatypeConvert.py # explain   : 学习   class DataTyepconvert(object):     """     數據類型轉換     """     def __init__(self):         """           """         self._strdatabase = "sql server、mysql、postgresql、oracle、sqlite"         pass       @staticmethod     def SqlServerConvert(datattype:str)->str:         """         sql server 數據類型轉換 python datatype         :param dtattype:         :return:         """         pythodatatype=""         dtattype=datattype.lower()         try:             match dtattype:                 case "int":                     pythodatatype="int"                     pass                 case "char":                     pythodatatype ="str"                     pass                 case "nchar":                     pythodatatype = "str"                     pass                 case "nvarchar":                     pythodatatype = "str"                     pass                 case "bigint":                     pythodatatype="float64"                     pass                 case "binary":                     pythodatatype ="bytes"                     pass                 case "bit":                     pythodatatype = "bool"                     pass                 case "date":                     pythodatatype = "datetime"                     pass                 case "datetime":                     pythodatatype = "datetime"                 case "datetime2":                     pythodatatype = "datetime"                 case "time":                     pythodatatype = "time"                 case "real":                     pythodatatype="float64"                     pass                 case "smalldatetime":                     pythodatatype ="datetime"                     pass                 case "smallint":                     pythodatatype = "int32"                     pass                 case "tinyint":                     pythodatatype = "int32"                     pass                 case "uniqueidentifier":                     pythodatatype="str"                     pass                 case "float":                     pythodatatype ="float"                     pass                 case "varbinary":                     pythodatatype = "bytes"                     pass                 case "decimal":                     pythodatatype = "float"                     pass                 case "image":                     pythodatatype="bytes"                     pass                 case "money":                     pythodatatype ="float"                     pass                 case "smallmoney":                     pythodatatype ="float"                     pass                 case "numeric":                     pythodatatype ="float"                     pass                 case "text":                     pythodatatype = "str"                     pass                 case "ntext":                     pythodatatype = "str"                     pass                 case _:                     pythodatatype='str'                     pass         except ValueError as erro:             pythodatatype = 'str'           return pythodatatype       @staticmethod     def mySQLConvert(datattype:str)->str:         """         mySQL 數據類型轉換 python datatype         :param dtattype:         :return:         """         pythodatatype=""         dtattype=datattype.lower()         try:             match dtattype:                 case "char":                     pythodatatype="str"                     pass                 case "varchar":                     pythodatatype ="str"                     pass                 case "enum":                     pythodatatype = "str"                     pass                 case "set":                     pythodatatype="str"                     pass                 case "tinytext":                     pythodatatype ="str"                     pass                 case "mediumtext":                     pythodatatype = "str"                     pass                 case "text":                     pythodatatype="str"                     pass                 case "longtext":                     pythodatatype ="str"                     pass                 case "json":                     pythodatatype = "str"                     pass                 case "bit":                     pythodatatype="int"                     pass                 case "tinyint":                     pythodatatype ="int"                     pass                 case "tinyint unsigned":                     pythodatatype = "int"                     pass                 case "smallint":                     pythodatatype = "int"                     pass                 case "smallint unsigned":                     pythodatatype = "int"                     pass                 case "mediumint":                     pythodatatype = "int"                     pass                 case "mediumint unsigned":                     pythodatatype = "int"                     pass                 case "int":                     pythodatatype = "int"                     pass                 case "int unsigned":                     pythodatatype = "int"                     pass                 case "bigint":                     pythodatatype = "int"                     pass                 case "bigint unsigned":                     pythodatatype = "int"                     pass                 case "year":                     pythodatatype = "int"                     pass                 case "decimal":                     pythodatatype = "float"                     pass                 case "float":                     pythodatatype = "float"                     pass                 case "double":                     pythodatatype = "float"                     pass                 case "date":                     pythodatatype = "date"                     pass                 case "time":                     pythodatatype = "time"                     pass                 case "datetime":                     pythodatatype = "datetime"                     pass                 case "timestamp":                     pythodatatype = "datetime"                     pass                 case "binary":                     pythodatatype = "binary"                     pass                 case "varbinary":                     pythodatatype = "binary"                     pass                 case "tinyblob":                     pythodatatype = "bytes"                     pass                 case "blob":                     pythodatatype = "bytes"                     pass                 case "mediumblob":                     pythodatatype = "bytes"                     pass                 case "longblob":                     pythodatatype = "bytes"                     pass                   case _:                     pythodatatype='str'                     pass         except ValueError as erro:             pythodatatype = 'str'           return pythodatatype       @staticmethod     def postgreSQLConvert(datattype:str)->str:         """         postgreSQL 數據類型轉換 python datatype         :param dtattype:         :return:         """         pythodatatype=""         dtattype=datattype.lower()         try:             match dtattype:                 case "character":                     pythodatatype="str"                     pass                 case "character varying":                     pythodatatype ="str"                     pass                 case "text":                     pythodatatype = "str"                     pass                 case "smallint":                     pythodatatype = "int"                     pass                 case "integer":                     pythodatatype = "int"                     pass                 case "bigint":                     pythodatatype = "int"                     pass                 case "serial":                     pythodatatype = "int"                     pass                 case "bigserial":                     pythodatatype = "int"                     pass                 case "real":                     pythodatatype = "float"                     pass                 case "double precision":                     pythodatatype = "float"                     pass                 case "numeric":                     pythodatatype = "numeric"                     pass                 case "date":                     pythodatatype = "date"                     pass                 case "time":                     pythodatatype = "time"                     pass                 case "time with time zone":                     pythodatatype = "time"                     pass                 case "timestamp":                     pythodatatype = "datetime"                     pass                 case "timestamp with time zone":                     pythodatatype = "datetime"                     pass                 case "bytea":                     pythodatatype = "binary"                     pass                 case "point":                     pythodatatype = "point"                     pass                 case "lseg":                     pythodatatype = "lseg"                     pass                 case "line":                     pythodatatype = "line"                     pass                 case "path":                     pythodatatype = "path"                     pass                 case "polygon":                     pythodatatype = "polygon"                     pass                 case "box":                     pythodatatype = "box"                     pass                 case "circle":                     pythodatatype = "circle"                     pass                 case _:                     pythodatatype='str'                     pass         except ValueError as erro:             pythodatatype = 'str'           return pythodatatype         @staticmethod     def SQLiteConvert(datattype:str)->str:         """         SQLite 數據類型轉換 python datatype         :param dtattype:         :return:         """         pythodatatype=""         dtattype=datattype.lower()         try:             match dtattype:                 case "int8":                     pythodatatype="int"                     pass                 case "tinyint":                     pythodatatype ="int"                     pass                 case "int2":                     pythodatatype = "int"                     pass                 case "smallint":                     pythodatatype = "int"                     pass                 case "int":                     pythodatatype = "int"                     pass                 case "integer":                     pythodatatype = "int"                     pass                 case "mediumint":                     pythodatatype = "int"                     pass                 case "int64":                     pythodatatype = "int"                     pass                 case "bigint":                     pythodatatype = "int"                     pass                 case "unsigned bigint":                     pythodatatype = "int"                     pass                 case "real":                     pythodatatype = "float"                     pass                 case "float":                     pythodatatype = "float"                     pass                 case "double":                     pythodatatype = "float"                     pass                 case "char":                     pythodatatype = "str"                     pass                 case "varchar":                     pythodatatype = "str"                     pass                 case "text":                     pythodatatype = "str"                     pass                 case "date":                     pythodatatype = "date"                     pass                 case "time":                     pythodatatype = "time"                     pass                 case "datetime":                     pythodatatype = "datetime"                     pass                 case "timestamp":                     pythodatatype = "datetime"                     pass                 case "blob":                     pythodatatype = "binary"                     pass                 case "binary":                     pythodatatype = "binary"                     pass                 case "unknown":                     pythodatatype = "str"                     pass                   case _:                     pythodatatype='str'                     pass         except ValueError as erro:             pythodatatype = 'str'           return pythodatatype       @staticmethod     def oracleConvert(datattype:str)->str:         """         oracle 數據類型轉換 python datatype         :param dtattype:         :return:         """         pythodatatype=""         dtattype=datattype.lower()         try:             match dtattype:                 case "char":                     pythodatatype="str"                     pass                 case "varchar2":                     pythodatatype ="str"                     pass                 case "nchar":                     pythodatatype = "str"                     pass                 case "nvarchar2":                     pythodatatype = "str"                     pass                 case "clob":                     pythodatatype = "str"                     pass                 case "nclob":                     pythodatatype = "str"                     pass                 case "cfile":                     pythodatatype = "str"                     pass                 case "long":                     pythodatatype = "str"                     pass                 case "rowid":                     pythodatatype = "str"                     pass                 case "urowid":                     pythodatatype = "str"                     pass                 case "float":                     pythodatatype = "float"                     pass                 case "binary_float":                     pythodatatype = "float"                     pass                 case "binary_double":                     pythodatatype = "float"                     pass                 case "number":                     pythodatatype = "float"                     pass                 case "integer":                     pythodatatype = "int"                     pass                 case "decimal":                     pythodatatype = "float"                     pass                 case "date":                     pythodatatype = "date"                     pass                 case "timestamp":                     pythodatatype = "datetime"                     pass                 case "timestamp with time zone":                     pythodatatype = "datetime"                     pass                 case "timestamp with local time zone":                     pythodatatype = "datetime"                     pass                 case "blob":                     pythodatatype = "binary"                     pass                 case "bfile":                     pythodatatype = "binary"                     pass                 case "raw":                     pythodatatype = "binary"                     pass                 case "long raw":                     pythodatatype = "binary"                     pass                 case _:                     pythodatatype='str'                     pass         except ValueError as erro:             pythodatatype = 'str'           return pythodatatype