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Online SQL Developer Subjective Test
Clock
Test duration:
20
min
Notes
No. of questions:
3
Tie
Level of experience:
Entry/Mid/Senior

SQL Subjective Test

SQL Developer test is the ideal test for recruiters and hiring managers to assess candidate's understanding of SQL. Our test is useful for hiring SQL Server Developer, MS SQL Server Developer, and Database Application Developer. Our customers have reported that iMocha's SQL Developer interview test has helped them to reduce hiring time by 45%.

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About

Online SQL Developer Subjective Test

To solve this major problem of guesswork in tests, Interview Mocha has launched its unique, innovative tool - “The Descriptive Test Simulator,” that can evaluate essay-type answers. Using an online Descriptive test simulator, candidates can write one-word, short essay-type, and long essay-type answers. These answers are evaluated through our descriptive assessment engine. This reduces guesstimates in online assessments and gives results sharper than ever.

The SQL developer test is a subjective test that is specially designed and developed to effectively check the descriptive knowledge related to SQL through our proper descriptive simulator assessment. The SQL quiz online test is reviewed, qualified, and validated by our subject matter experts (SMEs).

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Test Summary

SQL developer interview tests may contain MCQs (Multiple Choice Questions), MAQs (Multiple Answer Questions), Fill in the Blanks, Whiteboard Questions, Audio / Video Questions, AI-LogicBox (Pseudo-Coding Platform), Coding Simulators, True or False Questions, etc.  


SQL quiz advanced test enables employers and recruiters to identify potential SQL developers by evaluating working skills and job readiness. For this reason, we have moved on from the MCQ and developed a new simulator known as the Descriptive Simulator, which evaluates candidates' Descriptive/Subjective Answers and grades them automatically. 

Test Duration
20
No. of Questions
3
Level of Expertise
Entry/Mid/Senior
Useful for hiring
  • SQL Server Developer
  • MS SQL Server developer
  • Database Application Developer
Topics Covered
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Concatenation Operator with joiningConcatenation Operator with joining

iMocha’s SQL developer test evaluates candidate’s understanding about concatenation operator which joins two distinct strings into one string value

Removing Duplicate Rows

Our SQL quiz online test evaluates candidate’s ability to remove identical data rows from database
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Nested Select Statements with Joining

This test validates candidate’s understanding about nested queries which is embedded inside a query called subquery and select statement return a specific value from database
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Multiple Tables & Joining

Our test helps recruiters and hiring managers to assess candidate’s ability to join multiple tables
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Joining with sorting

This assessment evaluates a candidate’s knowledge about sorting data from a database and joining two tables
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Joining with conditional Statement

This assessment validates a candidate’s ability to join databases with help of conditional statements
Sample Question
Choose from our 100,000+ questions library or add your own questions to make powerful custom tests.

Question types :

Multiple Option

Topic:

Difficulty:

Hard


Q 1. You have been asked to train « Naive Bayes model for spam detection dataset

Using Python command, what wil you add in the given code at XXXX to deciore, it and train your modal for the given dataset?

import numpy os np

X= nporroyll 3. 2b[1 21 [2.21.[3,21)
Y= nporray(fi.a,a.1))

XXXX

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

from skinamnaive_bayas import

Gaussianna

otf = Gaussianne()

ceataie(x ¥)

Question types :

Multiple Option

Topic:

Machine teaming

Difficulty:

Hard


Q 1. Q2 Lets assume that you have 6 Pandas DataFrome(af) in the below tole.

Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074

When the following commend is executed, what hoppens to the DatoFrome?

df= defiinat()
Y= nporray(fi.a,a.1))

Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074
Index Code Open High
0 AAPL 19877 70074
1 AAPL 19877 70074
2 AAPL 19877 70074
3 AAPL 19877 70074
4 AAPL 19877 70074
it gives an error becouse of the third row which has on empty string.
None of these

Question types :

AI-Logic Box

Topic:

Difficulty:

Easy

Question:

Write a query to find the email address and skill names of each job seeker whose skills match the required skills for jobs posted one hour ago.
A few lines in the query are missing (//Write your query here). You need to complete the query to get the output.


Table: JobSeeker JobSeekerID Name Email 1 Max max@gmail.com 2 Peter peter@yahoo.com  
Table: Skills SkillID SkillName 1 C# 2 PHP 3 Java  
Table: JobSeekerSkills ID JobSeekerID SkillID 1 1 2 2 2 1 3 2 3  
 Table: JobAdvertisement ID JobDescription RequiredSkillID PostingDate 1 Software development by C# 1 2017-02-20 03:15:34 2 Software development by PHP 2 2017-02-20 04:31:48 3 Software development by Java 3 2017-02-20 03:31:54

Complete the query given below: 

 "SELECT JobSeeker.Email,   AS 'Skill Name',

FROM  JobSeeker
INNER JOIN JobSeekerSkills ON JobSeekerSkills.JobSeekerID = JobSeeker.JobSeekerID

INNER JOIN JobAdvertisement ON JobAdvertisement.RequiredSkillID = JobSeekerSkills.SkillID
WHERE 
GROUP BY JobSeeker.Email "


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