Can SQL Profiler give you the Missing Index information? Can Symmetric keys be used in a view? Can table-valued parameter be null? Can the "print" command be told not to send a "newline"? Can we alias name for temp table Can we creating index on non unique value columns on temp...
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Can SQL Profiler give you the Missing Index information? Can Symmetric keys be used in a view? Can table-valued parameter be null? Can the "print" command be told not to send a "newline"? Can we alias name for temp table Can we creating index on non unique value columns on temporary...
We might see an improvement in the performance of a SELECT statement after adding an index. But we should not forget that the performance gains come with a cost to the transactions on the same table. Conceptually, every DML on a table needs to update all the indexes of the table. Even t...
If you must enter a large amount of text in the Memo field, delete the index for the Memo field. To do so follow these steps: Open the table with the Memo field in Design view. On the View Menu, click Indexes. Note In Microsoft Office Access 2007, click the Design tab, and then ...
so when we did dc91c7d, I searched pretty hard for why we couldn't change to information_schema, the temp table use case was unknown to me at that time (though it obviously works with DESCRIBE). We typically rely on tests failing to see if something is a regression. then when we di...
we could add an index to that table variable. Although you can't do a CREATE INDEX against a table variable, youcanhave an index created behind the scenes when you declare the table variable with a PRIMARY KEY constraint (the same goes for UNIQUE constraints). Since a table can have at...
we could add an index to that table variable. Although you can't do a CREATE INDEX against a table variable, youcanhave an index created behind the scenes when you declare the table variable with a PRIMARY KEY constraint (the same goes for UNIQUE constraints). Since a table can have at...
create temp table aa as select * from full_join_columns where rowid>1; cli_one_dim~temp.aa~0; create temp table bb as select * from aaunion; //select * from bb; create temp table cc as with recursive under_alice as ( select rowid old_rowid,属性,数量 ...
DECLARE EXIT HANDLER FOR 1361 SELECT "HY000 (ER_TRG_ON_VIEW_OR_TEMP_TABLE) Trigger's '%s' is view or temporary table" as 'ERROR_NO SQLSTATE'; DECLARE EXIT HANDLER FOR 1362 SELECT "HY000 (ER_TRG_CANT_CHANGE_ROW) Updating of %s row is not allowed in %strigger" as 'ERROR_NO SQLSTA...