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Okay to merge included columns on otherwise identical indexes?
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)SQL server indexing foreign keys, covering indexes included columnsdifference between having many non clustered index with single columns and with combination of many columnsTwo identical MySQL tables, one not using indexesAre these indexes redundant?Does Index Intersection work with Included Columns?Effect of an index on update statements where update column is not in an indexSQL Server : Included columns in an Index: is there something like “too many”?Any reason to have both an index with included columns and one without?Index creation with multiple columns - should I combine as many as possible?Table/Column Character Encoding and Indexes
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I have two indexes that index the same field on the same table. The only difference between them is the included columns.
There's no reason I shouldn't combine the included columns and just have one index, right?
sql-server index
asked 7 hours ago
BVernonBVernon
218413
add a comment |
I have two indexes that index the same field on the same table. The only difference between them is the included columns.
There's no reason I shouldn't combine the included columns and just have one index, right?
sql-server index
asked 7 hours ago
BVernonBVernon
218413
add a comment |
I have two indexes that index the same field on the same table. The only difference between them is the included columns.
There's no reason I shouldn't combine the included columns and just have one index, right?
sql-server index
asked 7 hours ago
BVernonBVernon
218413
I have two indexes that index the same field on the same table. The only difference between them is the included columns.
There's no reason I shouldn't combine the included columns and just have one index, right?
sql-server index
sql-server index
asked 7 hours ago
BVernonBVernon
218413
asked 7 hours ago
BVernonBVernon
218413
asked 7 hours ago
BVernonBVernon
218413
asked 7 hours ago
BVernonBVernon
218413
asked 7 hours ago
BVernonBVernon
218413
218413
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Yes, you should merge these indexes and only keep one, as long as you verify that:
Neither of them are marked as
UNIQUE(in which case, preserve that one)Neither of them have a filter condition
Neither of them are expressly referenced in an index hint
answered 6 hours ago
Erik DarlingErik Darling
22.9k1269113
Thanks. I just combined like 5 indexes and shed close to a gigabyte of data, lol. :)
– BVernon
5 hours ago
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Yes, you should merge these indexes and only keep one, as long as you verify that:
Neither of them are marked as
UNIQUE(in which case, preserve that one)Neither of them have a filter condition
Neither of them are expressly referenced in an index hint
answered 6 hours ago
Erik DarlingErik Darling
22.9k1269113
Thanks. I just combined like 5 indexes and shed close to a gigabyte of data, lol. :)
– BVernon
5 hours ago
add a comment |
Yes, you should merge these indexes and only keep one, as long as you verify that:
Neither of them are marked as
UNIQUE(in which case, preserve that one)Neither of them have a filter condition
Neither of them are expressly referenced in an index hint
answered 6 hours ago
Erik DarlingErik Darling
22.9k1269113
Thanks. I just combined like 5 indexes and shed close to a gigabyte of data, lol. :)
– BVernon
5 hours ago
add a comment |
Yes, you should merge these indexes and only keep one, as long as you verify that:
Neither of them are marked as
UNIQUE(in which case, preserve that one)Neither of them have a filter condition
Neither of them are expressly referenced in an index hint
answered 6 hours ago
Erik DarlingErik Darling
22.9k1269113
Yes, you should merge these indexes and only keep one, as long as you verify that:
Neither of them are marked as
UNIQUE(in which case, preserve that one)Neither of them have a filter condition
Neither of them are expressly referenced in an index hint
answered 6 hours ago
Erik DarlingErik Darling
22.9k1269113
answered 6 hours ago
Erik DarlingErik Darling
22.9k1269113
answered 6 hours ago
Erik DarlingErik Darling
22.9k1269113
answered 6 hours ago
Erik DarlingErik Darling
22.9k1269113
22.9k1269113
Thanks. I just combined like 5 indexes and shed close to a gigabyte of data, lol. :)
– BVernon
5 hours ago
add a comment |
Thanks. I just combined like 5 indexes and shed close to a gigabyte of data, lol. :)
– BVernon
5 hours ago
Thanks. I just combined like 5 indexes and shed close to a gigabyte of data, lol. :)
– BVernon
5 hours ago
Thanks. I just combined like 5 indexes and shed close to a gigabyte of data, lol. :)
– BVernon
5 hours ago
add a comment |
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