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With the distinct keyword with single and multiple column names, you get distinct records: SELECT DISTINCT column 1, column 2, ... FROM table_name;
Learn how to use the SQL SELECT DISTINCT statement to return only distinct values from a table. See examples, syntax, demo database and exercises.
14 wrz 2022 · Jak działa SELECT DISTINCT w SQL? Służy do zwracania tylko unikalnych (różnych) wartości w bazach danych SQL - zobacz przykłady.
20 maj 2021 · Despite the words unique and distinct being synonyms, they cover very different things in SQL. The UNIQUE keyword in SQL plays the role of a database constraint; it ensures there are no duplicate values stored in a particular column or a set of columns.
16 sty 2024 · Here, we will talk about SELECT UNIQUE which is used to fetch unique values from a column that may have duplicate values. The UNIQUE constraint is used while creating the table whereas the SELECT UNIQUE statement is used to access the data from the table.
DISTINCT is a keyword in SQL that allows you to show unique or distinct results. It’s added to a SELECT query to eliminate duplicates in the data it displays because columns often contain duplicate values and sometimes you may only want to show unique or distinct values.
This SQL tutorial explains how to use the SQL DISTINCT clause with syntax and examples. The SQL DISTINCT clause is used to remove duplicates from the result set of a SELECT statement.
