<= (Less Than or Equal To) (U-SQL)

Article
03/27/2017

Summary

Compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left operand has a value lower than or equal to the right operand; otherwise, the result is FALSE.

Syntax

Less_Than_or_Equal_To_Operator :=                                                                        
     expression '<=' expression.

Remarks

expression
Is any valid expression. Both expressions must have implicitly convertible data types.

Return Type

Boolean.

Examples

The examples can be executed in Visual Studio with the Azure Data Lake Tools plug-in.
The scripts can be executed locally. An Azure subscription and Azure Data Lake Analytics account is not needed when executed locally.

Less Than or Equal To with Numeric and Temporal Types

@somePeople = 
    SELECT * FROM 
        ( VALUES
        (1, "Noah",    100, (int?)10000, new DateTime(2012,05,31)),
        (2, "Sophia",  100, (int?)15000, new DateTime(2012,03,19)),
        (3, "Liam",    100, (int?)30000, new DateTime(2014,09,14)),
        (6, "Emma",    200, (int?)8000,  new DateTime(2014,03,08)),
        (7, "Jacob",   200, (int?)8000,  new DateTime(2014,09,02)),
        (8, "Olivia",  200, (int?)8000,  new DateTime(2013,12,11)),
        (9, "Mason",   300, (int?)50000, new DateTime(2016,01,01)),
        (10, "",       400, (int?)15000, new DateTime(2014,09,14)),
        (11, "Ethan ", 400, (int?)null,  new DateTime(2015,08,22))
        ) AS T(EmpID, EmpName, DeptID, Salary, StartDate);

// All records where Salary is 10,000 or less.
@result = SELECT * FROM @somePeople WHERE Salary <= 10000;
OUTPUT @result TO "/ReferenceGuide/Operators/Comparison/lessThan1.txt" USING Outputters.Tsv();

// All records where StartDate is 03/08/2014 or sooner
@result = SELECT * FROM @somePeople WHERE StartDate <= new DateTime(2014,03,08);
OUTPUT @result TO "/ReferenceGuide/Operators/Comparison/lessThan2.txt" USING Outputters.Tsv();

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