DELETE Command Purpose DELETE removes specific rows from a table based on given conditions. Characteristics Deletes data row by row Supports rollback (transactional) Triggers row-level triggers Preserves table structure Slower than TRUNCATE when deleting all rows Syntax and Examples DELETE FROM tabl...
Foundational Concepts Data: Symbolic records describing entities. Types include text, graphics, images, audio, and video. A key characteristic is the inseparability of data from its semantics, and data inherently possesses structure. Database (DB): A long-term, organized, and shared collection of da...
1. Data Definition Language (DDL) DDL statements are used to define, modify, and delete database structures. Database Operations -- List all databases SHOW DATABASES; -- Create a new database CREATE DATABASE inventory_db; CREATE DATABASE IF NOT EXISTS inventory_db; -- Remove a database DROP DATABASE...
Record shapes A Record in jOOQ is a typed, positional container that pairs a sequence of Field definitions with their corresponding values. It behaves like a column-to-value tuple stored in order. Generated table-specific records expose getters and setters for each column, but internally a Record st...
Regular expressions describe text patterns using literal characters and metacharacters. In Oracle Database (10g and later), SQL gains native regex support through a set of REGEXP_* functions that implement a POSIX-style dialect with several Perl-like features. This guide summarizes the syntax, optio...