Tag: SQL

Oracle SQL: Converting NVARCHAR to VARCHAR Explained

SQL CAST Function: Purpose, Usage, and Examples

SQL: Efficiently Remove Duplicates and Calculate Sums

SQL: Efficiently Concatenate VARCHAR Fields – A Comprehensive Guide

PL/SQL: How to Check Table Creation Time – A Comprehensive Guide

Combining AND and OR Operators in SQL Queries for Complex Filtering

SQL String Concatenation: Methods and Examples

Oracle LAG Function: Understanding Its Purpose and Usage

Oracle nvarchar2 Max Length: Understanding Character Limits

How to Combine Two Fields in SQL: A Simple Guide