Function-Based Index.It is an index that calculates the result of a function involving one or more table columns (an arithmetic expression, an SQL function, a PL/SQL function, or a package function). The results are stored in the index. It is convenient when you use queries with expression...
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...
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 marked DETERMINISTIC. A function-based index is executed with the credentials of the index owner, so the index own...
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...
ERROR OGG-01169 Oracle GoldenGate Delivery for Oracle, <replicat>.prm: Encountered an update where all key columns for target table <USER>.<TABLE> are not present.2) No index defined that can be used.Example:Available Index is a Unique function-based index:...
INDEX_NAME|INDEX_TYPE|TABLE_OWNER|TABLE_NAME|UNIQUENESS|+---+---+---+---+---+|I1|FUNCTION-BASED NORMAL|SYS|T1_FUNC|NONUNIQUE|+---+---+---+---+---+2rowsinset
(a * b));-- Create a table with a string column with a case-insensitive collation.>CREATETABLEnames(nameSTRINGCOLLATEUNICODE_CI);-- Create an external table connected to Oracle>CREATETABLEIFNOTEXISTSora_tabUSINGORACLEOPTIONS (url'<jdbc-url>', dbtable'',user'<username>',password'<pa...
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【题目】Oraclel 中函数调用问题 create or replace function A (in p in char,out p out char, inout p in out char) 调用时下列哪一项正确? A. select A ('abc', x, y) B. select A('abc') C. select A( 'abc', x, xyz') D. select A( 'abc', ' xyz') ...
题目: 使用如下命令可以创建主键索引“CREATE[UNIQUE|FULLTEXT|SPATIAL]INDEX索引名ON表名(字段名[(长度)],…);”。 A.正确 B.错误 免费查看参考答案及解析 题目: 关于pthread()create函数,下列说法错误的是()。 A.它返回是线程创建成功与否的错误码 B.线程属性参数使用空指针表示使用默认参数 C.它成功创建后...