select * from user_constraints; select * from all_constraints; select * from dba_constraints; 三、索引及其操作 1、创建索引 create [unique] index 索引名 on 表名(列名1 ASC|DESC,列名2 ASC|DESC,...,列名n ASC|DESC) [tablespace 表空间名]; 注:基表中的列名,一个索引最多有16列,long列、long...
The following is a list of Oracledata dictionary views that are supported by the gateway forDB2 UDB for z/OS,DB2 UDB for iSeries, andDB2/UDB DRDA servers. ALL_CATALOG ALL_COL_COMMENTS ALL_CONS_COLUMNS ALL_CONSTRAINTS ALL_INDEXES ALL_IND_COLUMNS ALL_OBJECTS ALL_SYNONYMS ALL_TAB_COMMENTS ALL...
Execute Migration Commands for a List of Schemas Migrate CTXSYS Schema Return to the OATM menu is possible as soon as all migration processes (sequential, parallel, and java process for tables with LONG and LONG RAW columns) have started and you get the prompt –“Press Return key to continu...
选择OBE_TASKS 表,然后单击 Constraints 选项卡。 3. 单击Create。 4. 为Constraint Type 选择 Foreign Key。为 Foreign Key Column 选择 ASSIGNED_TO,为 Reference Table Name 选择 OBE_EMPLOYEES,以及为 Reference Table Column List 选择 EMPLOYEE_ID。然后,单击 Next >。 5. 单击Finish。 6. 约束创建成功。
Select the columns to use in the source. The selected columns are added to the External Column list in the order they are selected. Select the Select All check box to select all of the columns.External Column - A view of the external (source) columns in the order that you see them ...
– 9781046 11.2.0.2, 12.1.0.1 Wrong results with CHECK constraints , INLIST and OUTER join III 9776940 11.2.0.3, 12.1.0.1 Wrong results with function based indexes / ORA-600 [qkeUnreferenceExpr_2] parsing CONTAINS/SCORE – superceded
Remove unused blocklist from .travis.yml [#1830] Add spec for custom sequence name [#1846] Restore old Code Climate behavior [#1716] Do not install bundler explicitly [#1725] RuboCop Add RuboCop to Gemfile [#1841] Bump RuboCop to 0.63.0 [#1816] No need to exclude jdbc_connection.rb fo...
SQL> desc dba_constraints 查看约束 SQL> desc dba_cons_columns 查看列约束 SQL> show parameter log_archive_dest; 查看archive log所在位置 SQL> archive log list; 查看归档目录以及log sequence SQL> select * from V$FLASH_RECOVERY_AREA_USAGE; 查看flash_recovery_area 使用情况。
Here’s the list of statements aimed at index t1_pk. Note that t1_pk(id) is a unique index on a primary key constraint, t1_uk(col3) is a non-unique index covering a unique constraints, t2_col3(col3) is a single column non-unique index. 1 2 3 4 5 6 7 8 9 10 11 12 ...
In CockroachDB, data is distributed across all nodes differently for all tables (with no support for interleaved tables). The absence of support for interleaved tables can limit hierarchical data organization and balanced data distribution, impacting performance in joins, constraints, and transactions. ...