Bitmap Indexis an index type used in scenarios with repetitive values. For instance, a traditional B-Tree index would be too expensive for data warehouses, but Bitmap indexes will save space. In addition, Bitmap indexes work best with complicated queries containing WHERE clauses with multiple ...
"ALTER INDEX RENAME Syntax"– use this to rename an index or index partition. "ALTER INDEX REBUILD Syntax"– use this to rebuild an index or index partition. With this statement, you can also replace index metadata; add stopwords, sections, and stop sections to an index; and resume a fai...
65、AUDIT, COMMENT, DELETE, GRANT, INDEX, INSERT, LOCK, RENAME, SELECT, UPDATE, REFERENCES, and EXECUTE. Positions 14, 15, and 16 are reserved for future use. The characters are: - for none, S for success, F for failure, and B for both).COMMENT_TEXTVARCHAR2(4000)Text comment on th...
Oracle alter index disable/unusable的区别 近日,在处理DAO层oracle/mysql尽可能通用的问题,把DDL抽到了过程中,alter index disable的时候报了个错“ORA-02243: ALTER INDEX 或 ALTER MATERIALIZED VIEW 选项无效”,经查,原因是disable,enable针对函数索引。普通索引为unusable和rebuild。如下: SQL>createtabletestassele...
RENAME statement, 15-4 repeatable reads, 24-3 replication administration, 31-12 applications that use, 31-3 availability, 31-2 conflict resolution, 31-15 conflicts procedural replication, 31-17 definition, 31-2 deployment templates, 31-11 disconnected computing, 31-2 groups, 31...
RENAME TABLE、TRUNCATE TABLE、CREATE INDEX 说明 仅支持迁移当前数据库账号下的CREATE INDEX操作。 数据类型映射关系 详情请参见异构数据库间的数据类型映射关系。 准备工作 登录待迁移的Oracle数据库,创建用于采集数据的账号并授权。 说明 如您已创建包含下述权限的账号,可跳过本步骤。 数据库 结构...
MergeRowResultSetstruct intoRowValueResultSetand rename it toResultSet. 0.0.4 (2018-02-25) New features: Add query methods toStatementto fetch rows as iterator. [Statement::query()][] [Statement::query_named()][] [Statement::query_as()][] ...
SQL> ALTER INDEX create_date_ind2 RENAME TO create_date_ind; 索引已更改。 验证 sql> select partitioned from user_tables where table_name = 'UNPAR_TABLE'; par --- yes sql> select partition_name from user_tab_partitions where table_name = 'UNPAR_TABLE'; ...
Make OracleEnhancedIndexDefinition as subclass of IndexDefinition [#600] Refactor add_index and add_index_options [#601] Types namespace moved to ActiveRecord::Type::Value [#484] Add new_column method [#482] Rename type_cast to type_cast_from_database [#485] Removed forced_column_...
INDEXES_RENAMING Enable this directive to rename all indexes using tablename_columns_names. Could be very useful for database that have multiple time the same index name or that use the same name than a table, which is not allowed by PostgreSQL Disabled by default. USE_INDEX_OPCLASS Operator...