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Why is SQL returning duplicate rows?
Some of the rows in the result table might be duplicate. If you do not include DISTINCT in a SELECT clause, you might find duplicate rows in your result, because SQL returns the JOB column’s value for each row that satisfies the search condition. Null values are treated as duplicate rows for DISTINCT.
How do we limit which rows are returned by a query?
The limit keyword is used to limit the number of rows returned in a query result. “SELECT {fieldname(s) | *} FROM tableName(s)” is the SELECT statement containing the fields that we would like to return in our query. “[WHERE condition]” is optional but when supplied, can be used to specify a filter on the result set.
Is used to limit the number of rows returned?
Correct Option: B setMaxRows(int i) method is used to limit the number of rows that the database returns from the query.
How do I limit rows in SQL?
The SQL LIMIT clause restricts how many rows are returned from a query. The syntax for the LIMIT clause is: SELECT * FROM table LIMIT X;. X represents how many records you want to retrieve. For example, you can use the LIMIT clause to retrieve the top five players on a leaderboard.
Why does SQL Server return wrong number of rows?
You need to add a top clause and/or use the repeatable option to get the number of rows you want. From the documentation. The actual number of rows that are returned can vary significantly. If you specify a small number, such as 5, you might not receive results in the sample. This behavior has been documented before.
Why do I return different numbers of rows in each execution?
If table is static and rows are not changed what could be the reason to return different numbers of the rows to return in each execution. The factor is 10 PERCENT is not the percentages of the table rows or tables records, it is percentages of the table’s data pages.
When does SQL Server return different sample of rows?
When REPEATABLE is specified with a different repeat_seed value, SQL Server will typically return a different sample of the rows in the table. . I’ve observed the same.