create index upper_names_i on table ( upper ( name ) );You can use functions in bitmap or B-tree indexes.Bear in mind if you have a function-based index, to use it the function in your where clause must match the definition in the index exactly(*). So if your index is:Copy...
Users who had previously been granted privileges on a redefined function can still access the function without being regranted the privileges. If any function-based indexes depend on the function, then Oracle Database marks the indexesDISABLED. ...
INDEX_NAME|INDEX_TYPE|TABLE_OWNER|TABLE_NAME|UNIQUENESS|+---+---+---+---+---+|I1|FUNCTION-BASED NORMAL|SYS|T1_FUNC|NONUNIQUE|+---+---+---+---+---+2rowsinset
To create a function-based index, in addition to the prerequisites for creating a conventional index, if the index is based on user-defined functions, then those functions must be markedDETERMINISTIC. Also, you must have theEXECUTEobject privilege on any user-defined function(s) used in the fu...
functionintheWHEREclause. Becauseinthepast,usingthefunctionintheWHEREclause wouldmakeitimpossibletoimprovetheperformanceofthe statementbycreatinganindexthatwascreatedonthistable withoutusingit. Example: Usingcostbasedoptimizers,theindexisthestandardBtree index,builtontheSURNAMEcolumn. ...
CREATE FUNCTION CREATE GLOBAL INDEX CREATE GROUP CREATE INCREMENTAL MATERIALIZED VIEW CREATE INDEX CREATE LANGUAGE CREATE MASKING POLICY CREATE MATERIALIZED VIEW CREATE MODEL CREATE NODE CREATE NODE GROUP CREATE PROCEDURE CREATE RESOURCE LABEL CREATE ROLE CREATE ROW LEVEL SECURITY POLICY...
CREATE FUNCTION (SQL) CREATE FUNCTION (外部) 創建地點 CREATE MATERIALIZED VIEW CREATE RECIPIENT CREATE SCHEMA CREATE SERVER CREATE SHARE CREATE STREAMING TABLE CREATE TABLE 數據表屬性和數據表選項 CREATE TABLE 使用 Hive 格式 CREATE TABLE CONSTRAINT ...
1. "CREATE OR REPLACE FUNCTION"是用来创建或替换函数的关键字。 2. "function_name"是要创建或替换的函数的名称。函数名应该是唯一的,并且应该遵循数据库的命名规范。 3. "parameter1", "parameter2"等是函数的输入参数。每个参数由参数名称和参数数据类型组成。在函数中,我们可以使用这些参数来接收输入值,并根...
--- 1.0 2015/5/21 geovindu 1. Created this function. NOTES: Automaticallyavailable Auto ReplaceKeywords: Object Name f_Bookname Sysdate: 2015/5/21 Date and Time: 20155/21, 12:02:38, and 2015/521 12:02:38 Username geovindu (set in TOAD Options, Procedure Editor) Table...
Yes. But, as always, there's more to it than this. You'll want to add some constraints to your table. And there are many types of table available in Oracle Database, including:Table Organization: Heap Index External Temporary Tables Partitioning Table Clusters Blockchain Tables...