This is one of the most common ways to convert data types in Oracle SQL. The main difference between CAST and TO_NUMBER is thatCAST is ANSI compliant, andTO_NUMBER(along with theother TO_* functions)are Oracle-specific. CAST also works on a wider range of data types, where as there a...
Oracle built-in data types { character_datatypes | number_datatypes | long_and_raw_datatypes | datetime_datatypes | large_object_datatypes | rowid_datatypes } Oracle-supplied data types { any_types | XML_types | spatial_types | media_types } ...
DATE Date and time values LONG Variable-length character data(up to 2G);Oracle推荐不使用此数据类型,推荐使用CLOB、BLOB CLOB Character data(up to 4GB) RAW and LONG RAW Raw binary data BLOB Binary data(up to 4GB) BFILE Binary data stored in an external file(up to 4GB) ROWID A base-64 n...
转:Oracle Timestamp Data Types Oracle's Timestamp data types enhance the Date data type by including fractional seconds and time zone information. It's range is from January 1, 4712 BC to December 31, 9999 AD. Timestamps come in three different flavors: TIMESTAMP TIMESTAMP WITH TIME ZONE ...
Oracle Data Types(数据类型),Oracle数据类型,及与Jdbc规范的对应关系。大类Oracle数据类型Jdbc数据类型精度说明字符CHARCHAR2000字节(500字符) VARCHAR2VARCHAR4000字节(1000字符) CLOBCLOB4G字节 NCHARNCHAR2000字节(666字符) NVARCHAR2NVARCHAR4000字节(1333字符) NCLO
Class OracleTypes oracle.jdbc Class OracleTypes Oracle types. This interface defines constants that are used to identify SQL types. The actual type constant values are equivalent to those in XOPEN. Field Summary static intARRAY static intBFILE...
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For more information about VARCHAR2, see Oracle built-in data types (Oracle documentation). In this pattern, in the sample source data table column, the VARCHAR2(1) data is either a Y, for Yes, or N, for No. This pattern includes instru...
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Oracle recommends that you convert LONG RAW columns to one of the binary LOB column types. ROWID The ROWID is a special type of column known as a pseudocolumn. The ROWID pseudocolumn can be accessed just like a column in a SQL SELECT statement. There is a ROWID pseudocolumn for every ...