Elite QandA


Can we use multiple values in like operator in SQL?


  1. Can we use multiple values in like operator in SQL?
  2. How do I SELECT multiple values in SQL?
  3. What is the difference between union and union all?
  4. How do you update multiple values in SQL?
  5. How use like in between in SQL?
  6. How do I assign multiple values to a variable in SQL Server?
  7. Can I UPDATE multiple columns in SQL?
  8. When should you use union as opposed to union all?
  9. Does Union all remove duplicates?
  10. How can use like condition with multiple values in SQL Server?
  11. How do you add multiple values to a variable?
  12. Can we UPDATE 2 columns at a time?
  13. What is truncate in database?
  14. Which is better UNION or UNION all in SQL?
  15. Whats faster UNION or UNION all?
  16. Which is better UNION or UNION all?
  17. Which one is faster UNION or UNION all?

Can we use multiple values in like operator in SQL?

The SQL LIKE clause is used to compare a value to similar values using wildcard operators. There are two wildcards used in conjunction with the LIKE operator. The percent sign represents zero, one or multiple characters....Example.Sr.No.Statement & Description5WHERE SALARY LIKE '%2' Finds any values that end with 2.

How do I SELECT multiple values in SQL?

The IN operator allows you to specify multiple values in a WHERE clause. The IN operator is a shorthand for multiple OR conditions.

What is the difference between union and union all?

The only difference between Union and Union All is that Union extracts the rows that are being specified in the query while Union All extracts all the rows including the duplicates (repeated values) from both the queries.

How do you update multiple values in SQL?

To update multiple columns use the SET clause to specify additional columns. Just like with the single columns you specify a column and its new value, then another set of column and values. In this case each column is separated with a column.

How use like in between in SQL?

LIKE Operator in SQL In a WHERE clause, the LIKE operator is used to look for a certain pattern in a column. In SQL, it has two wildcard characters, such as: Percentage symbol (%): It is a substitution for zero, one, or more characters. Underscore symbol (_): It is a substitution for a single character.

How do I assign multiple values to a variable in SQL Server?

ExamplesDECLARE @myTest VARCHAR(10)SELECT @myTest = 'Jignesh'--Multiple assignment example.DECLARE @A VARCHAR(10)DECLARE @B VARCHAR(10)DECLARE @C VARCHAR(10)SELECT @A='Jignesh', @B='Tejas', @C='Rakesh'10 Jul 2019

Can I UPDATE multiple columns in SQL?

The UPDATE statement in SQL is used to update the data of an existing table in database. We can update single columns as well as multiple columns using UPDATE statement as per our requirement.

When should you use union as opposed to union all?

A UNION statement effectively does a SELECT DISTINCT on the results set. If you know that all the records returned are unique from your union, use UNION ALL instead, it gives faster results.

Does Union all remove duplicates?

SQL Union All Operator Overview The SQL Union All operator combines the result of two or more Select statement similar to a SQL Union operator with a difference. The only difference is that it does not remove any duplicate rows from the output of the Select statement.

How can use like condition with multiple values in SQL Server?

Alternatively you can try the following method: SELECT x. * FROM ( VALUES ('emp1%', 3), ('emp3%', 2) ) AS v (pattern, row_count) CROSS APPLY ( -- your query SELECT top (v.

How do you add multiple values to a variable?

You can assign the same value to multiple variables by using = consecutively. This is useful, for example, when initializing multiple variables to the same value. It is also possible to assign another value into one after assigning the same value.

Can we UPDATE 2 columns at a time?

We can update multiple columns by specifying multiple columns after the SET command in the UPDATE statement. The UPDATE statement is always followed by the SET command, it specifies the column where the update is required. Attention reader!

What is truncate in database?

TRUNCATE TABLE removes all rows from a table, but the table structure and its columns, constraints, indexes, and so on remain. To remove the table definition in addition to its data, use the DROP TABLE statement.

Which is better UNION or UNION all in SQL?

A UNION statement effectively does a SELECT DISTINCT on the results set. If you know that all the records returned are unique from your union, use UNION ALL instead, it gives faster results.

Whats faster UNION or UNION all?

UNION ALL is faster and more optimized than UNION. But we cannot use it in all scenarios. UNION ALL with SELECT DISTINCT is not equivalent to UNION.

Which is better UNION or UNION all?

UNION ALL command is equal to UNION command, except that UNION ALL selects all the values. A UNION statement effectively does a SELECT DISTINCT on the results set. If you know that all the records returned are unique from your union, use UNION ALL instead, it gives faster results.

Which one is faster UNION or UNION all?

Both UNION and UNION ALL operators combine rows from result sets into a single result set. The UNION operator removes eliminate duplicate rows, whereas the UNION ALL operator does not. Because the UNION ALL operator does not remove duplicate rows, it runs faster than the UNION operator.



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