Sql distinct vs unique

Difference between UNIQUE and DISTINCT Oracle Community - Oracle. Unique is a keyword used in the Create Table directive to denote that a field will contain unique data, usually used for natural keys, foreign. For compatibility with the ISO standard and other implementations of SQL.

Your first two are equivalent since UNIQUE and DISTINCT are synonyms. Specify DISTINCT or UNIQUE if you want Oracle to return only one copy of). Eliminating Duplicates with DISTINCT - TechNet - Microsoft With DISTINCT, you can eliminate duplicates and see only the unique product. UNIQUE vs DISTINCT, what s the difference? Quotng from online Oracle 9i SQL Reference.

SQL select distinct xy from tablea xy.

Difference between UNIQUE and DISTINCT Oracle Community - Oracle

Differences between UNIQUE and DISTINCT in select statements The following is from the Oracle 9i SQL Reference (Note the statement these two. Taking any given select and changing distinct to unique seems to. The following SQL statement selects only the distinct values from the City.

To fetch the non-duplicate aka unique aka distinct rows and CAN BE used. Difference between Unique Values (DISTINCT ) and Unique. What is the difference between distinct and unique in terms of SQL. What is the difference between UNIQUE vs DISTINCT when used in a select statement?

Please note that neither UNIQUE nor DISTINCT are functions, so the. In Microsoft Access queries, use Unique Values property (DISTINCT ) if you need a snapshot of certain data. Sql - Difference between Select Unique and Select Distinct - Stack.

SQL SELECT DISTINCT Statement - W3Schools The SELECT DISTINCT statement is used to return only distinct (different) values.

Difference between Unique Values (DISTINCT ) and Unique

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Eliminating Duplicates with DISTINCT - TechNet - Microsoft

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