Can temporary tables have indexes?
One of the most valuable assets of a temp table (#temp) is the ability to add either a clustered or non clustered index. Additionally, #temp tables allow for the auto-generated statistics to be created against them. This can help the optimizer when determining cardinality.
How do I see indexes in Sybase?
How to find Index List in a Sybase database?
- select si.* from sysobjects so, sysindexes si where so.id = si.id.
- go.
- select.
- si.*
- from.
- sysobjects so, sysindexes si.
- where.
- so.id = si.id and.
Can we create index on temporary table in postgresql?
Existing permanent tables with the same name are not visible to the current session while the temporary table exists, unless they are referenced with schema-qualified names. Any indexes created on a temporary table are automatically temporary as well.
Can we create indexes on table variables or temporary tables?
Temp tables are also subject to recompiles. In contrast, table variables are declared as opposed to created. Other ways how table variables differ from temp tables: they can’t be indexed via CREATE INDEX, can’t be created using SELECT/INTO logic, can’t be truncated, and don’t carry statistics.
How do I see all tables in Sybase?
USE myDatabase; GO SELECT * FROM sys. objects WHERE type = ‘U’;
What are type of indexes in Sybase database?
Sybase ASE offers two types of indexes: clustered and non-clustered. Clustered indexes physically sort table data to match their logical order. Non-clustered indexes only order the table data logically.
How to find an index on a temporary table?
I want to identify the indices on a temporary #table. The usual techniques work on a permanent table but don’t work on a temp table: –look for an index on a temporary table create table #T1 ( duff int) create index idx99 on #T1 (duff) select * from sysindexes where name = ‘idx99’ –returns null rows !
How to identify the columns of table index in Sybase?
Is there a means of identifying the columns of table index using systematically populated system tables such as: syscolumns, sysindexes, sysobjects, etc. I have tried to use syskeys unfortunately this table is only populated by sp_primarykey.
How to find the index of a table?
For #tables, the query for finding the indexes is the same as a normal table, but it needs to be executed against the tempdb (or the temp database for your session if it’s not default). Thanks for contributing an answer to Stack Overflow!