“Left join” is a type of join operation in SQL that returns all records from the left table and matching records from the right table. When there is no match, columns from the right table are filled with NULL values. This tool enables combining data from two tables based on specified criteria and extracting a more complete set of information, even if some records do not have a counterpart in the second table. It is frequently used for analyzing and reporting data from various sources in relational databases.
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