Adding quotes to a column in output

It is a common problem that sometimes while copying the data from SQL to MS-Excel, some data formats of string columns can change (in my case some strings were being converted to date).

To sort this issue we can add the quotes in SQL itself. Thus, while copying the data from SQL to MS-Excel having quotes in the original data would not change the data type and thus would retain the quotes in MS-Excel as well. But how is it feasible?

Here is a one stop solution

Dataset:

For this tutorial we shall make use of employee_performance:

CREATE TABLE employee_performance(
employee_id int,
department varchar(20),
education_level varchar(20) ,
gender char(1),
no_of_trainings int,
age int,
previous_year_rating numeric(2,1),
length_of_service int,
KPIs_met char(1),
avg_training_score numeric(5,2),
promoted_or_not varchar(3))

INSERT INTO
employee_performance(employee_id,department,education_level,gender,no_of_trainings,age,previous_year_rating,length_of_service,KPIs_met,avg_training_score,promoted_or_not)
VALUES
(1001,'Marketing','Graduate','M',2,24,NULL,1,'Y',69.5,'N'),
(1002,'Analytics','Post-Graduate','M',5,32,4.5,7,'Y',89.5,'Y'),
(1003,'R&D','Graduate','F',5,44,5,10,'Y',87,'Y'),
(1004,'HR','Graduate','M',1,32,3,3,'Y',54,'N'),
(1005,'Marketing','PhD','M',0,38,4,7,'N',79.5,'N'),
(1006,'IT','Graduate','F',2,23,NULL,0,'Y',83.5,'N'),
(1007,'Analytics','Post-Graduate','M',2,28,5,4,'Y',78.5,'Y'),
(1008,'Sales','Graduate','F',5,22,NULL,0,'Y',69.5,'N'),
(1009,'Marketing','PhD','F',2,48,3,7,'Y',98,'Y'),
(10010,'Marketing','PhD','M',10,39,5,4,'Y',71,'N'),
(10011,'Finance','Post-Graduate','M',3,35,3.5,10,'N',55,'N'),
(10012,'Sales','Post-Graduate','F',2,55,4,19,'Y',87,'Y'),
(10013,'HR','Graduate','M',0,48,2.5,21,'Y',72.5,'N'),
(10014,'IT','Graduate','F',2,24,3.5,12,'Y',64,'N');

This is how our data looks:

SELECT * FROM employee_performance;

Solution:

SELECT employee_id,department, concat('''',department,'''') as department1 
FROM employee_performance;