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Filtering & Expressions

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Filtering & Expressions

Filtering & Expressions

Filtering and Conditional ExpressionsThis section focuses on using filters and logical expressions to control what data...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
IN, NOT IN, BETWEEN, LIKE

IN, NOT IN, BETWEEN, LIKE

Understanding IN, NOT IN, BETWEEN, and LIKEThese operators help make your WHERE clause more powerful and expressive.1. I...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
IS NULL vs = NULL

IS NULL vs = NULL

IS NULL vs = NULLIn SQL, NULL represents a missing or undefined value. You cannot use = NULL.Incorrect:SELECT * FROM emp...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
Logical Operators: AND, OR, NOT

Logical Operators: AND, OR, NOT

Logical Operators: AND, OR, NOTANDSELECT * FROM employees WHERE department_id = 50 AND salary > 3000;ORSELECT * FROM emp...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
CASE and DECODE

CASE and DECODE

CASE and DECODECASE ExpressionSELECT first_name, department_id, CASE department_id WHEN 10 THEN...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
NVL, NVL2, COALESCE, NULLIF

NVL, NVL2, COALESCE, NULLIF

NULL Handling FunctionsNVLSELECT first_name, NVL(commission_pct, 0) FROM employees;NVL2SELECT first_name, NVL2(commissio...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views
GREATEST and LEAST

GREATEST and LEAST

GREATEST and LEAST FunctionsGREATESTReturns the highest value among provided expressions.SELECT GREATEST(100, 200, 300,...

Sai Sree Ram Gundepudi Updated Jul 26, 2025 0 views