The following table provides summary statistics for contract job vacancies advertised in Wimbledon with a requirement for SQL skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited SQL over the 3 months to 29 June 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

SQL (Structured Query Language)
London > Wimbledon
3 months to
29 Jun 2017
Same period 2016 Same period 2015
Rank 3 5 -
Rank change year-on-year +2 -  
Contract jobs citing SQL 6 3 0
As % of all contract IT jobs advertised in Wimbledon 46.15% 15.79% -
As % of the Programming Languages category 66.67% 30.00% -
Number of daily rates quoted 6 3 0
Wimbledon median daily rate £460 £425 -
Median daily rate % change year-on-year +8.23% -  
London median daily rate £475 £450 £438
% change year-on-year +5.55% +2.85%  
Number of hourly rates quoted 0 0 0
Wimbledon median hourly rate - - -
London median hourly rate £22.56 £41.75 £21.94
% change year-on-year -45.96% +90.33%  

SQL is in the programming language skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Wimbledon with a requirement for programming language skills.

Contract Programming Language Skills
Wimbledon
Contract job vacancies with a requirement for programming language skills 9 10 6
As % of all contract IT job vacancies advertised in Wimbledon 69.23% 52.63% 54.55%
Number of daily rates quoted 12 13 8
Wimbledon median daily rate £383 £425 £338
Median daily rate % change year-on-year -10.00% +25.92%  
10th Percentile £300 £370 £288
90th Percentile £460 £471 £388
London median daily rate £500 £475 £450
% change year-on-year +5.26% +5.55%  
Number of hourly rates quoted 0 0 0
Wimbledon median hourly rate - - -
London median hourly rate £32.50 £40.00 £30.00
% change year-on-year -18.75% +33.33%  

SQL
Job Vacancy Trend in Wimbledon

Job postings citing SQL as a percentage of all IT jobs advertised in Wimbledon.

Job vacancy trend for SQL in Wimbledon

SQL
Contractor Daily Rate Trend in Wimbledon

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing SQL in Wimbledon.

Contractor daily rate trend for SQL in Wimbledon

SQL
Contractor Daily Rate Histogram in Wimbledon

The daily rate distribution of IT jobs citing SQL in Wimbledon over the 3 months to 29 June 2017.

Contractor daily rate histogram for SQL in Wimbledon

SQL
Contractor Hourly Rate Trend in Wimbledon

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing SQL in Wimbledon.

Contractor hourly rate trend for SQL in Wimbledon

For the 6 months to 29 June 2017, IT contractor jobs citing SQL also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Wimbledon region with a requirement for SQL.

1 6 (54.55%) Web Services
2 5 (45.45%) JMeter
2 5 (45.45%) HP
2 5 (45.45%) ISEB
2 5 (45.45%) Software Testing
2 5 (45.45%) ISTQB
2 5 (45.45%) Stress Testing
2 5 (45.45%) HP Quality Center
2 5 (45.45%) SoapUI
2 5 (45.45%) LoadUI
3 4 (36.36%) Spring
3 4 (36.36%) Java
3 4 (36.36%) JavaScript
3 4 (36.36%) Oracle
3 4 (36.36%) CSS
4 3 (27.27%) Struts
4 3 (27.27%) VSS/SourceSafe
4 3 (27.27%) PL/SQL
4 3 (27.27%) Hibernate
4 3 (27.27%) Ajax
4 3 (27.27%) Analytical Skills
4 3 (27.27%) Stakeholder Engagement
5 2 (18.18%) Data Management
6 1 (9.09%) Agile Software Development
6 1 (9.09%) TDD
6 1 (9.09%) Data Analysis
6 1 (9.09%) Marketing
6 1 (9.09%) Google
6 1 (9.09%) Scrum
6 1 (9.09%) Python

SQL
Co-occurring IT Skills in Wimbledon by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Applications
1 1 (9.09%) Microsoft Excel
Cloud Services
1 1 (9.09%) Google Analytics
Database & Business Intelligence
1 1 (9.09%) MongoDB
Development Applications
1 5 (45.45%) JMeter
1 5 (45.45%) LoadUI
1 5 (45.45%) SoapUI
2 3 (27.27%) VSS/SourceSafe
3 1 (9.09%) Git (software)
3 1 (9.09%) Mocha
3 1 (9.09%) Protractor
3 1 (9.09%) Selenium
General
1 1 (9.09%) Marketing
Job Titles
1 7 (63.64%) Analyst
2 5 (45.45%) Performance Analyst
2 5 (45.45%) Performance Test Analyst
2 5 (45.45%) Test Analyst
3 4 (36.36%) Developer
4 3 (27.27%) Java Developer
4 3 (27.27%) Java Software Developer
4 3 (27.27%) Software Developer
5 2 (18.18%) Data Analyst
6 1 (9.09%) Front End Developer (Client-Side Developer)
6 1 (9.09%) Full Stack Developer
6 1 (9.09%) Marketing Analyst
6 1 (9.09%) Marketing Data Analyst
Libraries, Frameworks & Software Standards
1 6 (54.55%) Web Services
2 4 (36.36%) CSS
2 4 (36.36%) Spring
3 3 (27.27%) Ajax
3 3 (27.27%) Hibernate
3 3 (27.27%) Struts
4 1 (9.09%) HTML
4 1 (9.09%) JSP
4 1 (9.09%) Meteor
4 1 (9.09%) Node.js
4 1 (9.09%) RESTful
Miscellaneous
1 3 (27.27%) Analytical Skills
Processes & Methodologies
1 5 (45.45%) Software Testing
1 5 (45.45%) Stress Testing
2 3 (27.27%) Stakeholder Engagement
3 2 (18.18%) Data Management
4 1 (9.09%) Adaptive Web Design
4 1 (9.09%) Agile Software Development
4 1 (9.09%) Analytics
4 1 (9.09%) BDD
4 1 (9.09%) CRM
4 1 (9.09%) Data Analysis
4 1 (9.09%) Data Architecture
4 1 (9.09%) Front End Development
4 1 (9.09%) Revenue Management
4 1 (9.09%) Scrum
4 1 (9.09%) TDD
4 1 (9.09%) Unit Testing
Programming Languages
1 4 (36.36%) Java
1 4 (36.36%) JavaScript
2 3 (27.27%) PL/SQL
3 1 (9.09%) Python
Qualifications
1 5 (45.45%) ISEB
1 5 (45.45%) ISTQB
Systems Management
1 5 (45.45%) HP Quality Center
Vendors
1 5 (45.45%) HP
2 4 (36.36%) Oracle
3 1 (9.09%) Google