Posts in: Filtering & Expressions
Filtering & Expressions
Learn various filtering techniques and expressions used to extract specific data from Oracle SQL tables.
Read More →IN, NOT IN, BETWEEN, LIKE
Learn how to use IN, NOT IN, BETWEEN, and LIKE to filter rows with flexible matching logic, especially useful for text search, ranges, and list matching.
Read More →IS NULL vs = NULL
Understand the difference between IS NULL and = NULL in SQL and avoid common mistakes while filtering NULL values.
Read More →Logical Operators: AND, OR, NOT
Use logical operators like AND, OR, and NOT to combine or negate conditions in SQL WHERE clauses.
Read More →CASE and DECODE
Use CASE and DECODE to apply conditional logic and create dynamic columns in SQL queries.
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