SQL exercises on employee Database: List all the employees whose designation is CLERK
SQL employee Database: Exercise-20 with Solution
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20. From the following table, write a SQL query to find those employees whose designation is ‘CLERK’. Return complete information about the employees.
Sample table: employees
Pictorial Presentation:
Sample Solution:
SELECT *
FROM employees
WHERE job_name = 'CLERK';
Sample Output:
emp_id | emp_name | job_name | manager_id | hire_date | salary | commission | dep_id --------+----------+----------+------------+------------+---------+------------+-------- 63679 | SANDRINE | CLERK | 69062 | 1990-12-18 | 900.00 | | 2001 68736 | ADNRES | CLERK | 67858 | 1997-05-23 | 1200.00 | | 2001 69000 | JULIUS | CLERK | 66928 | 1991-12-03 | 1050.00 | | 3001 69324 | MARKER | CLERK | 67832 | 1992-01-23 | 1400.00 | | 1001 (4 rows)
Relational Algebra Expression:
Relational Algebra Tree:
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Sample Database: employee
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Previous: From the following table, write a SQL query to find the name of employees and their manager separated by the string 'works for'.
Next: From the following table, write a SQL query to find those employees whose experience is more than 27 years. Return complete information about the employees.
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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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