drop index 索引名称 on 表名; 1. 例子
DECLARE v_Exists NUMBER; BEGIN v_Exists := 0; SELECT 1 INTO v_Exists FROM USER_INDEXES WHERE TABLE_NAME LIKE 'myTable' AND INDEX_NAME LIKE 'myIndexName' IF v_Exists = 1 THEN EXECUTE IMMEDIATE "DROP INDEX myIndexName" ENDIF; EXCEPTION WHEN OTHERS THEN NULL; END; This code is out ...
One more parameter used in the CREATE INDEX statement is COMPUTE STATISTICS. It is an optional parameter telling Oracle to collect the statistics during index creation. Further, this stats data would serve when choosing the “plan of execution” of SQL statements. However, since Oracle 10, the ...
CREATE INDEX myindex ON mytable(mycolumn) indextype is ctxsys.context parameters('lexer my_lexer'); ※个人体会:全文索引建立后,用pl/sql developer工具view table,在index这一栏是看不到索引信息的。 而本人在删除全文索引时遇到过一下报错: SQL> drop index searchkeytbl_key; drop index searchkeytbl_...
oracle数据库执行drop index index_name 时报指定的索引不存在。 select * from user_ind_columns where index_name='unq_fileKey'; 能查到唯一索引 执行drop index unq_fileKey;却提示如题错误 原因分析 是因为oracle数据库中索引名称是区分大小写的,最好用双引号把索引名称括起来,如下:drop index “index_name...
DROP INDEX <index_name>; CREATE INDEX <index_name> .. with appropriate storage clause ALTER TABLE ENABLE CONSTRAINT <pk_constraint>; –Enable the foreign key constraints ALTER TABLE <child_table> ENABLE CONSTRAINT <fk_constraint>; 如果是分区...
create index 索引名 on表名(列名);create index table1_album_idx ontable(aid);create index table1_user_idx ontable(userid); 3.再重复第一步,验证一下,是否成功 二.oracle表删除索引 相信不少人遇到过ORA-02429: cannot drop index used for enforcement of unique /primary key 这个错误,对应的中文提...
删除表空间语句:`DROP TABLESPACE SAC INCLUDING CONTENTS AND DATAFILES;` 根据MOS文档: How To Resolve ORA-29857 During a Drop Tablespace although No Domain Index exists in This Tablespace (文档 ID 1610456.1) 对于ORA-29857这个错误,文档说的很清楚: ...
How to drop table in oracle TheDROP TABLEoracle command is used to remove a table from the database. The dropped table and its data remain no longer available for selection. Dropping a table drops the index and triggers associated with it. ...
Note: When removing Oracle, you must drop the tablespace first and then drop the indexes. Tip: The JD Edwards EnterpriseOne installer delivers sample scripts which you can use as examples of how to drop the tablespaces. You should examine and edit these to suit your needs with the understandi...