SQL putting text in query output
Sometimes, it is required to get an organized output from a SELECT QUERY. For that, it is better to include some user defined columns from the outside at runtime. These columns are valid only for this output. These included columns will appear as a column head and also as the contents for that column.
Example:
Sample table: agents
To get a formatted output with user defined column( % ) along with the 'agents' table with the following condition -
1. commission must be more than .14,
the following SQL statement can be used:
SQL Code:
SELECT agent_code,agent_name,
working_area,' % ',commission
FROM agents
WHERE commission>0.14;
Relational Algebra Expression:
Relational Algebra Tree:
Output:
AGENT_CODE AGENT_NAME WORKING_AREA '%' COMMISSION ---------- ----------------------------------------------------- ----- ---------- A007 Ramasundar Bangalore % .15 A011 Ravi Kumar Bangalore % .15 A006 McDen London % .15 A004 Ivan Torento % .15
SQL putting text in query with group by and order by
To get a formatted output with user defined columns ('For','No.of Agent','Agent(s)','in' and '%' ) along with the 'agents' table with following condition -
1. number of agents for each 'working_area' must be less than 3,
the SQL statement can be used:
SQL Code:
SELECT 'For ',count(agent_name)as "No.of Agent",
'Agent(s)',' in ',
working_area,avg(commission),' % '
FROM AGENTS
having count(agent_name)<3
GROUP BY working_area
ORDER BY working_area DESC
Output:
'FOR' No.of Agent 'AGENT(S 'IN' WORKING_AREA AVG(COMMISSION) '%' ----- ----------- -------- ------- ----------------------------------- --------------- ----- For 1 Agent(s) in Torento .15 % For 1 Agent(s) in San Jose .12 % For 1 Agent(s) in New York .12 % For 1 Agent(s) in Mumbai .11 % For 2 Agent(s) in London .14 % For 1 Agent(s) in Hampshair .11 % For 1 Agent(s) in Chennai .14 % For 1 Agent(s) in Brisban .13 %
Here is a new document which is a collection of questions with short and simple answers, useful for learning SQL as well as for interviews.
Practice SQL Exercises
- SQL Exercises, Practice, Solution
- SQL Retrieve data from tables [33 Exercises]
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- SQL Formatting query output [10 Exercises]
- SQL Quering on Multiple Tables [8 Exercises]
- FILTERING and SORTING on HR Database [38 Exercises]
- SQL JOINS
- SQL SUBQUERIES
- SQL Union[9 Exercises]
- SQL View[16 Exercises]
- SQL User Account Management [16 Exercise]
- Movie Database
- BASIC queries on movie Database [10 Exercises]
- SUBQUERIES on movie Database [16 Exercises]
- JOINS on movie Database [24 Exercises]
- Soccer Database
- Introduction
- BASIC queries on soccer Database [29 Exercises]
- SUBQUERIES on soccer Database [33 Exercises]
- Hospital Database
- Employee Database
- More to come!
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SQL: Tips of the Day
SQL Server SELECT into existing table.
INSERT INTO dbo.TABLETWO SELECT col1, col2 FROM dbo.TABLEONE WHERE col3 LIKE @search_key
This assumes there's only two columns in dbo.TABLETWO - you need to specify the columns otherwise:
INSERT INTO dbo.TABLETWO (col1, col2) SELECT col1, col2 FROM dbo.TABLEONE WHERE col3 LIKE @search_key
Database: SQL Server
Ref: https://bit.ly/3y6tpA3
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