SQL> alter index ind_obj_id rebuild; Index altered. SQL> analyze index ind_obj_id validate structure; Index analyzed. SQL> select btree_space,height,pct_used,(del_lf_rows/decode(lf_rows,0,1,lf_rows))*100||'%' as delete_pct from index_stats; BTREE_SPACE HEIGHT PCT_USED DELETE_PCT ...
sybase删除unique clusteredindex Sybase.在PowerDesigner中如何添加-约束 唯一约束唯一约束与创建唯一索引基本上是一回事,因为在创建唯一约束的时候,系统会创建对应的一个唯一索引,通过唯一索引来实现约束。不过唯一约束更直观的表达了对应列的唯一性,使得对应索引的目的更加清晰,所以一般建议创建唯一约束而不是只创建唯一索...
tableNameName of the table that is indexedasany, mariadb, mssql, mysql, sybaseall Examples SQL example YAML example JSON example XML example SQL example --liquibase formatted sql--changeset liquibase-docs:dropIndex-exampleDROPINDEXidx_addressONpublic.person; ...
If there are no preceding errors, please contact Sybase Technical Support. 1> drop index [PSM.SAPSR3./BI0/F0SM_UPL_W].[/BI0/F0SM_UPL_W~10] 2> go Msg 166, Level 15, State 6: Server 'PSM', Line 1: DROP INDEX does not allow specifying the database name as a prefix to the ...
ERROR [42000] [Sybase][ODBC Driver][Adaptive Server Enterprise]Implicit conversion ERROR [42S02] [Microsoft][ODBC Excel Driver] The Microsoft Jet database engine could not find the object. ERROR [IM002] [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified...
SybaseTableDataset SynapseActivityAuthentication SynapseNotebookActivity SynapseNotebookReference SynapseSparkJobDefinitionActivity SynapseSparkJobReference TabularSource TabularTranslator TarGZipReadSettings TarReadSettings TeamDeskAuthenticationType TeamDeskLinkedService TeradataAuthen...
INDEXSYNONYM Let me give example here how it works traditionally vs in SQL Server 2016. -- Traditional Script IF OBJECT_ID('[HumanResource].[Department]', 'U') IS NOT NULL DROP TABLE [HumanResource].[Department] -- Another way of Scripting to achieve same goal ...
Python 报错 ValueError list.remove(x) x not in list 解决办法 根据报错来看, 应该是df=df.drop(df.columns[0])这句有问题的吧. 这句是删除行, 但因为行中没有df.columns[0]这个index, 所以会报错. 不知道具体的csv的结构, 所以只能帮到这种程度了. 然后就是可以直接在pd.read_csv里面写文件路径, 上...
51CTO博客已为您找到关于sybase drop语句的相关内容,包含IT学习相关文档代码介绍、相关教程视频课程,以及sybase drop语句问答内容。更多sybase drop语句相关解答可以来51CTO博客参与分享和学习,帮助广大IT技术人实现成长和进步。
51CTO博客已为您找到关于drop index的相关内容,包含IT学习相关文档代码介绍、相关教程视频课程,以及drop index问答内容。更多drop index相关解答可以来51CTO博客参与分享和学习,帮助广大IT技术人实现成长和进步。