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 Data Types(数据类型) 对于有些官方不建议使用的数据类型(如LONG,LONG RAW等)此处不在说明。
Note: Data types vary slightly by DBMS. For instance, columns defined as BLOB data types in Oracle, DB2, and PointBase would be defined as TEXT columns in Microsoft SQL Server and Sybase. Null Value Indicates whether or not null values can be stored for the column. Column Description A det...
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...
When you update a row in a table compressed with Hybrid Columnar Compression (HCC), theROWIDof the row changes. HCC, a feature of certain Oracle storage systems, is described inOracle Database Concepts. See Also: Oracle Database PL/SQL Packages and Types Referencefor information about theDBMS...
Extended data types are subject to the same rules and restrictions as LOBs. Refer to Oracle Database SecureFiles and Large Objects Developer's Guide for more information. Note that, although you must set MAX_STRING_SIZE = EXTENDED in order to set the size of a RAW data type to greater th...
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 ...
Oracle Database in multicloud environments Database applications achieve high performance, scale, and availability in your selected hyperscaler by using Oracle Database services running on Oracle Cloud Infrastructure, which is collocated in the hyperscaler’s data centers and deeply integrated with the ...
Oracle Database in multicloud environments Database applications achieve high performance, scale, and availability in your selected hyperscaler by using Oracle Database services running on Oracle Cloud Infrastructure, which is collocated in the hyperscaler’s data centers and deeply integrated with the ...
Data Types 最后更新时间:2024-11-06 14:20:11 BackingIndexMetaField Backing index metadata fields Used by actions: DescribeIndexList, DescribeIndexMeta. NameTypeDescription IndexNameStringBacking index name Note: This field may returnnull, indicating that no valid value can be obtained....