Top Distinct Sql Server. Recently during Comprehensive Database Performance Health Check I was caught in a very interesting scenario where two of the DBAs from the client’s organization ended up an argument about how TSQL works Let us discuss that today The discussion was about the epic confusion about TOP and DISTINCT When a query involves TOP and DISTINCT keywords.
Code language SQL (Structured Query Language) (sql) In this syntax the SELECT statement can have other clauses such as WHERE JOIN HAVING and GROUP BY expression Following the TOP keyword is an expression that specifies the number of rows to be returned The expression is evaluated to a float value if PERCENT is used otherwise it is converted to a BIGINT value.
SQL SELECT TOP, LIMIT, FETCH FIRST ROWS ONLY, ROWNUM
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SQL SERVER TOP and DISTINCT Epic Confusion SQL in
SQL Server TOP(1) with distinct Ask Question Asked 8 years 2 months ago Active 7 years 9 months ago Viewed 50k times 7 2 I am trying to extract the first row I get after ordering the result by i_version_id If I do not use TOP(2) 2013062520091217.
SQL Server: SELECT TOP Statement
מדריך SQL למתחילים למדו את SQL SERVER סביבת הSQL הפופולרית של מיקרוסופטרוצים להיות תותחי SQL ? מאגר שאלות ענק ומתאגר.
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Here is the question that Nan originally sent me I’m a bit confused about SELECT DISTINCT and SELECT For example Is this looking at distinct first names? Distinct combined first and last names? How do we distinguish between the columns used for the distinct evaluation and columns we just want to show in the output? What abouSQL Distinct and Top – Which Is First?Distinct and Top with Select List ExpressionsLet’s look at the first statement who purpose is to return a unique list of fist and last names TOP 10 will return the first ten items from the ordered set and SQL DISTINCT will remove any duplicates The question is which happens first? 1 Is the table sorted by LastName and the top t.