Skills SQL Server TSQL: Difference between revisions
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== Standard SQL == | == Standard SQL == | ||
Select, Insert, Update, Delete, Truncate, Merge | Select, Insert, Update, Delete, Truncate, Merge, tables, columns | ||
== Window functions == | == Window functions == | ||
OVER (ORDER BY col1) | |||
== Group by/aggregation == | == Group by/aggregation == | ||
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== Sorting == | == Sorting == | ||
Order By | |||
Desc - descending order | |||
== Sub-queries == | == Sub-queries == | ||
| Line 35: | Line 39: | ||
== Joins == | == Joins == | ||
Inner Join | |||
Left Join | |||
Cartesian joins (cross-products) with no where clause | |||
== Indexes and keys == | |||
Primary keys | |||
Foreign keys | |||
Unique keys | |||
Clustered indexes | |||
Non-clustered indexes | |||
Index Rebuilds | |||
Index/table statistics refreshing | |||
== Stored Procedures == | == Stored Procedures == | ||
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== Datatypes == | == Datatypes == | ||
Int, VarChar(8000), DateTime | Int, VarChar(8000), nVarChar(4000), DateTime, Image, XML.. | ||
== Dynamic SQL == | == Dynamic SQL == | ||
Latest revision as of 22:01, 8 October 2024
Used at:...
Standard SQL
Select, Insert, Update, Delete, Truncate, Merge, tables, columns
Window functions
OVER (ORDER BY col1)
Group by/aggregation
WHERE clause / Having
CTE - Common Table Expressions
Used at:...
Used at: MUFG Securities
Use of SQL Server CTEs (Common Table Expressions).
Sorting
Order By
Desc - descending order
Sub-queries
Views
Joins
Inner Join
Left Join
Cartesian joins (cross-products) with no where clause
Indexes and keys
Primary keys
Foreign keys
Unique keys
Clustered indexes
Non-clustered indexes
Index Rebuilds
Index/table statistics refreshing
Stored Procedures
Used at:...
Used at: MUFG Securities Five Guys Premier Foods Autodata
Pivot
Used at:...
Used at: Autodata
Pivot function
Unpivot function
Union
Used at:...
Used at: Autodata
Union
Union All
Datatypes
Int, VarChar(8000), nVarChar(4000), DateTime, Image, XML..
Dynamic SQL
Used at:...
Used at: Autodata
Dynamic SQL
SQL Injection
Other
Cursors
BCP - Bulk copy protocol
Triggers