type type_name is table of element_type [NOT NULL] index by binary_integer 2.嵌套表 type type_name is table of element_type [NOT NULL] 3.varray type type_name is [varray ¦varying array](max_size) of element_type[NOT NULL] 一,index_by表 TYPE TYPE1 IS TABLE OF VARCHAR2(10) I...
createindex<index_name>on<table_name>(<column_name>)[tablespace<tablespace_name>]; 1、普通索引 create index index_text_txton test(txt); 2、唯一索引 Oracle 自动在表的主键上创建唯一索引 createunique index <index_name>on <index_name>(<coiumn_name>); 3、位图索引 作用范围及优点: 1、位图索...
Consider this definition of an index-by table TYPE and table: DECLARE TYPE number_tabtype IS TABLE OF NUMBER INDEX BY BINARY_INTEGER; acres_clearcut number_tabtype; Which of the following ... Get Oracle PL/SQL Programming: A Developer's Workbook now with the O’Reilly learning platform. ...
payments reconciled by Oracle Cash Management populating the GL Interface table post through date Posted Invoice Register Posted Payment Register Posting Hold Report reports set of books Unposted Invoice Sweep Program Posting Hold Report Precision Payables option Preliminary Payment Register...
The Oracle JDBC 8.1.7 OCI driver enables JDBC applications to make PL/SQL calls with index-by table parameters. Overview Binding IN Parameters Receiving OUT Parameters The features in this chapter are supported by the OCI driver only. Index-by tables of PL/SQL records are not supported....
另外需要说明: 创建了索引并不一定就会使用,oracle自动统计表的信息后,决定是否使用索引,表中数据很少时使用全表扫描速度已经很快,没有必要使用索引 索引的语法 创建索引 CREATE UNIUQE | BITMAP INDEX <schema>.<index_name>ON <schema>.<table_name>(<column_name> | <expression> ASC | DESC,<column_name...
1、ALTER TABLE DROP PARTITION 用于删除table中某个PARTITION和其中的数据,主要是用于历史数据的删除。如果还想保留数据,就需要合并到另一个partition中。 删除该partition之后,如果再insert该partition范围内的值,要存放在更高的partition中。如果你删除了最大的partition,就会出错。
Oracle 唯一 约束(unique constraint) 与 索引(index) 关系说明 一. 官网对Unique Constraints说明 uniquekey constraint requires that every value in a column or set of columns beunique. No rows of a table may have duplicate values in a column (the uniquekey) or set oracle sed sql 唯一索引(uni...
另外需要说明: 创建了索引并不一定就会使用,oracle自动统计表的信息后,决定是否使用索引,表中数据很少时使用全表扫描速度已经很快,没有必要使用索引 索引的语法 创建索引 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATEUNIUQE|BITMAPINDEX<schema>.<index_name>ON<schema>.<table_name>(<column_name>...
You can check index on a table in Oracle using DBA_INDEXES view and using dba_segments you can check size of index in Oracle. To find index on a table and