SQL Query Interview Questions | Top 10 SQL Questions
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SQL Query Interview Questions | Top 10 SQL Questions:
TOP 10 SQL Query Based interview Questions:
1. SELECT CASE WHEN NULL = NULL THEN 'PRAVEEN'
ELSE 'KUMAR' END
FROM DUAL;
2. SELECT DECODE(1,2,3,4,5,6) FROM DUAL;
3. SELECT DEPT_ID,MAX(SALARY)
FROM EMPLOYEE;
4. SELECT 1 FROM DUAL
UNION
SELECT 1 FROM DUAL;
5. SELECT COUNT(*) FROM DUAL WHERE NULL = NULL;
6. SELECT SUBSTR('SQL LEARNING',2) FROM DUAL;
7. SELECT INSTR('PRAVEEN','E') FROM DUAL
8. SELECT 'SQL' FROM DUAL
UNION
SELECT 1 FROM DUAL;
9. SELECT REPLACE('SNOWFLAKE','S') FROM DUAL
10.SELECT COUNT(*) FROM DUAL WHERE NULL IS NULL;
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