How to make results more readable by using Sql Order By.
It sorts results by any column in the select list. It can be ascending or descending order.
By default the records are sorted in ascending order so we can omit the ASC keyword.
Example: Let's sort the Contact table by the Person's Surname in ascending order.
|1||White||Alan||210 George St||Sydney||NSW||2000|
|2||Johnson||Benjamin||11 Cooper St||Surry Hill||NSW||2010|
|3||Brown||Peter||72 Haymarket St||Haymarket||NSW||2000|
|4||Anderson||Thomas||33 Collins St||Melbourne||VIC||3000|
|5||Gomdas||Tony||78 Marine Pde||Coolangatta||QLD||4225|
|6||Green||Tony||123 Second Ave||Liverpool||NULL||2170|
|7||Gutman||Philip||27 Swanson St||Melbourne||VIC||3000|
|Anderson||Thomas||33 Collins St|
|Brown||Peter||72 Haymarket St|
|Gomdas||Tony||78 Marine Pde|
|Green||Tony||123 Second Ave|
|Gutman||Philip||27 Swanson St|
|Johnson||Benjamin||11 Cooper St|
|White||Alan||210 George St|
Tips:You can also do nested sorts, i.e. by adding one more column to the ORDER BY clause. In nested sorts, results ordered by first column, second column and so on. As many as you like, though some systems require that each sort element appears in the select list.
Sorting Null Values
Depending on the system, it will be either greater than or less than all non Null values.
Quick link. From here, you can learn the following:
The core of Sql, selecting data from table.
Conditionally selecting rows from table.
Eliminating duplicate values in the output.
Counting number of rows.
Getting the sum of a field
This function will return the highest value.
This function will return the lowest value.
This function will return the average value.
Sql And Or
Connecting two or more conditions in the Where or Having clause.
Sql Group By
Grouping rows into sets.
To filter the result of aggregation
Pattern searching for conditions in Where or Having clause
Added to conditions to show results between two values.
Return from Sql Order By to Sql Commands
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