1. CREATE INDEX命令语法 CREATE INDEX CREATE [unique] INDEX [user.]index ON [user.]table (column [ASC | DESC] [,column [ASC | DESC] ] ... ) [CLUSTER [scheam.]cluster] [INITRANS n] [MAXTRANS n] [PCTFREE n] [STORAGE storage] [TABLESPACE tablespace] [NO SORT] Advanced 1. 2. 3...
Oracle Database - Enterprise Edition - Version 10.2.0.3 and later: Create Index Returns: ORA-01452: Cannot CREATE UNIQUE INDEX; Duplicate Keys Found When Double Quot
SQL> create table test6 as select object_id,object_name from dba_objects; Table created. SQL> create table test6u nologging as select * from test6; Table created. SQL> create unique index uni_test6 on test6(object_id); Index created. SQL> alter table test6u add constraint uni_test7 ...
Note:Although the index is created for only unique values, the original data in the table remains unaltered. Remove Index From Tables To removeINDEXfrom a table, we can use theDROP INDEXcommand. For example, SQL Server DROPINDEXColleges.college_index; PostgreSQL, Oracle DROPINDEXcollege_index; ...
Introduction to Oracle CREATE INDEX statement# To create a new index for a table, you use theCREATE INDEXstatement. Here’s the syntax of theCREATE INDEXstatement: CREATEINDEXindex_nameONtable_name(column1[,column2,...]);Code language:SQL (Structured Query Language)(sql) ...
2023-01-29 02:17:36 SQL Statement: create unique index S_XMLP_REP_TMPL_U2 on S_XMLP_REP_TMPL ("FILE_NAME") parallel nologging tablespace INDX 2023-01-29 02:17:36 [tp][ODBC Oracle driver][Oracle]ORA-12801: error signaled in parallel query server P003 ...
「CREATE FUNCTION」および『Oracle Database PL/SQL言語リファレンス』を参照してください。 ASC | DESC ASCまたはDESCを使用すると、索引を昇順で作成するか降順で作成するかを指定できます。文字データの索引は、データベース・キャラクタ・セットの文字値の昇順または降順で作成されます。
在OceanBase 数据库 Oracle 模式下,如果删除表中的任一索引列,则所创建的索引失效。 语法 CREATE[UNIQUE]INDEXindex_name ONtable_name(index_col_name,...)[index_type][index_options]index_type:USINGBTREEindex_options:index_option[index_option...]index_option:GLOBAL|LOCAL|COMMENT'str...
在OceanBase 数据库 Oracle 模式下,如果删除表中的任一索引列,则所创建的索引失效。 语法 CREATE[UNIQUE]INDEXindex_name ONtable_name(key_part,...)[index_type][index_options]index_type:USINGBTREEindex_options:index_option[index_option...]index_option:GLOBAL|LOCAL|COMMENT'string'|...
Oracle：获取使用CREATE [UNIQUE] INDEX显式创建的索引使用*_indexes视图的constraint_index列。使用上面的...