区别: 这两个属性都属于user_tab_columns视图,他们的含义: 1,data_length:当前列数据类型的字节长度 如:EMPNO NUMBER(4) 22 ENAME VARCHAR2(10) 10 2,data_precision:列相关数据类型(数字类型)的具体长度(有效位数),一个十进制数(NUMBER类型),或一个二进制树(FLOAT类型) 如:SAL NUMBER(7,2) 7...
区别: 这两个属性都属于user_tab_columns视图,他们的含义: 1,data_length:当前列数据类型的字节长度 如:EMPNO NUMBER(4) 22 ENAME VARCHAR2(10) 10 2,data_precision:列相关数据类型(数字类型)的具体长度(有效位数),一个十进制数(NUMBER类型),或一个二进制树(FLOAT类型) 如:SAL NUMBER(7,2) 7...
Naïve Bayes – model object ore.odmNB object • name of the model • settings used to build the model • attributes used to build the model: name, type (numerical or categorical), data type, data length (size), precision and scale for numeric data, and whether the variable is ...
Precision Price List Request Date Return Reason Salesperson Ship From Address1..5 Ship To Ship To Address1..5 Ship To Customer Ship To Location Shipping Tolerances above Shipping Tolerances below Trading Partner Information Original Internal Item Original Item Identifier Type Orig...
The columns include: name, type (numerical or categorical), data type, data length (size), precision and scale for numeric data, and whether the variable is the target. distributions Target class distributions at each tree node. 82 ore.odmGLM nodes Node summary information. See summary.ore....
insert into col$(obj#,name,intcol#,segcol#,type#,length,precision#,scale,null$,offset,fixedstorage,segcollength,deflength,default$,col#,property,charsetid,charsetform,spare1,spare2,spare3)values(:1,:2,:3,:4,:5,:6,decode(:7,0,null,:7),decode(:5,2,decode(:8,-127/*MAXSB1MINAL*...
Complex: Data types for complex numbers. Floating Types: Additional Floating Types. Half-Precision: Half-Precision Floating Point. Decimal Float: Decimal Floating Types. Hex Floats: Hexadecimal floating-point constants. Fixed-Point: Fixed-Point Types. Named Address Spaces: Named address spaces. Oracle...
Rails :time as Oracle TIMESTAMP to support subsecond precision [#817, #816] Rails :datetime as Oracle TIMESTAMP to support subsecond precision [#739] Remove ActiveRecord::OracleEnhanced::Type::Timestamp [#815] Deprecate quote_date_with_to_date and quote_timestamp_with_to_timestamp [#...
select column_name, data_type, data_length, data_precision, data_scale from user_tab_columns where table_name = ‘table_name’; 修改表 alter table语句可以用于对表进行修改。 alter table语句可以执行以下任务: 1)添加、修改、删除列; 2)添加或删除约束; 3)启用或禁用约束。 添加列 alter table tabl...
DATA_TYPE String 参数的数据类型。 DEFAULT_VALUE String 参数的默认值。 DEFAULT_LENGTH Decimal 参数的默认值的长度。 IN_OUT String 参数方向(IN、OUT 或 IN/OUT)。 DATA_LENGTH Decimal 列的长度(字节数)。 DATA_PRECISION Decimal 十进制位 (NUMBER) 或二进制位 (FLOAT) 的长度。