The following table provides summary statistics for contract job vacancies advertised in Welwyn Garden City 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 25 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)
Hertfordshire / Welwyn Garden City
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 5 6 15
Rank change year-on-year +1 +9  
Contract jobs citing SQL 8 15 10
As % of all contract IT jobs advertised in Welwyn Garden City 14.81% 23.81% 7.75%
As % of the Programming Languages category 34.78% 65.22% 23.26%
Number of daily rates quoted 4 7 8
Median daily rate £275 £425 £310
Median daily rate % change year-on-year -35.29% +37.09%  
90% offered a daily rate of more than £225 £277 £302
10% offered a daily rate of more than £325 £431 £353
UK excluding London median daily rate £375 £363 £340
% change year-on-year +3.44% +6.61%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £40.00 £32.50 £22.50
% change year-on-year +23.07% +44.44%  

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 Welwyn Garden City with a requirement for programming language skills.

Contract Programming Language Skills
Welwyn Garden City
Contract job vacancies with a requirement for programming language skills 23 23 43
As % of all contract IT job vacancies advertised in Welwyn Garden City 42.59% 36.51% 33.33%
Number of daily rates quoted 11 12 27
Median daily rate £325 £400 £311
Median daily rate % change year-on-year -18.75% +28.51%  
90% offered a daily rate of more than £225 £289 £275
10% offered a daily rate of more than £575 £439 £414
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £42.50 £37.50 £37.00
% change year-on-year +13.33% +1.35%  

SQL
Job Vacancy Trend in Welwyn Garden City

The job posting trend of jobs advertised in Welwyn Garden City citing SQL as a proportion of all contract or permanent IT jobs with a match in the Programming Languages category.

Job vacancy trend for SQL in Welwyn Garden City

SQL
Contractor Daily Rate Trend in Welwyn Garden City

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

Contractor daily rate trend for SQL in Welwyn Garden City

SQL
Contractor Hourly Rate Trend in Welwyn Garden City

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

Contractor hourly rate trend for SQL in Welwyn Garden City

For the 6 months to 25 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 Welwyn Garden City region with a requirement for SQL.

1 10 (52.63%) Java
2 9 (47.37%) Python
2 9 (47.37%) Linux
3 8 (42.11%) Apache
3 8 (42.11%) Tomcat
3 8 (42.11%) Perl
3 8 (42.11%) PostgreSQL
3 8 (42.11%) Ruby
3 8 (42.11%) Bash Shell
3 8 (42.11%) LAPP Stack
4 7 (36.84%) Clustering
4 7 (36.84%) SSL
4 7 (36.84%) Firewall
4 7 (36.84%) TCP/IP
5 6 (31.58%) Windows
6 5 (26.32%) Microsoft Excel
6 5 (26.32%) Finance
6 5 (26.32%) Microsoft
6 5 (26.32%) Retail
6 5 (26.32%) Puppet
7 4 (21.05%) DevOps
7 4 (21.05%) Software Engineering
7 4 (21.05%) LAMP
7 4 (21.05%) MySQL
7 4 (21.05%) C
8 3 (15.79%) Data Warehouse
8 3 (15.79%) Teradata
8 3 (15.79%) Payment Gateway
8 3 (15.79%) Analytics
9 2 (10.53%) Banking

SQL
Co-occurring IT Skills in Welwyn Garden City 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:

Application Platforms
1 8 (42.11%) Apache
1 8 (42.11%) Tomcat
Applications
1 5 (26.32%) Microsoft Excel
2 1 (5.26%) Microsoft Office
2 1 (5.26%) Microsoft PowerPoint
Business Applications
1 3 (15.79%) Payment Gateway
Cloud Services
1 1 (5.26%) Office 365
Communications & Networking
1 7 (36.84%) Firewall
1 7 (36.84%) SSL
1 7 (36.84%) TCP/IP
2 1 (5.26%) ATM
2 1 (5.26%) Internet
2 1 (5.26%) LAN
2 1 (5.26%) WAN
2 1 (5.26%) Wireless
2 1 (5.26%) WLAN
Database & Business Intelligence
1 8 (42.11%) PostgreSQL
2 4 (21.05%) MySQL
3 3 (15.79%) Data Warehouse
4 1 (5.26%) Big Data
4 1 (5.26%) Data Mart
4 1 (5.26%) Enterprise Data Warehouse
4 1 (5.26%) Oracle Database
4 1 (5.26%) PowerCenter
General
1 5 (26.32%) Finance
1 5 (26.32%) Retail
2 2 (10.53%) Banking
3 1 (5.26%) Billing
3 1 (5.26%) Marketing
3 1 (5.26%) Pharmaceutical
Job Titles
1 5 (26.32%) Analyst
2 4 (21.05%) Data Analyst
2 4 (21.05%) DevOps Engineer
3 3 (15.79%) Software Engineer
4 2 (10.53%) Financial Analyst
4 2 (10.53%) Report Analyst
4 2 (10.53%) Support Engineer
4 2 (10.53%) Tester
5 1 (5.26%) Applications Support
5 1 (5.26%) Delivery Manager
5 1 (5.26%) ETL Tester
5 1 (5.26%) Help Desk Support
5 1 (5.26%) Integration Engineer
5 1 (5.26%) Service Manager
5 1 (5.26%) Service Support Manager
5 1 (5.26%) Services Delivery Manager
5 1 (5.26%) Software Support Engineer
5 1 (5.26%) SQL Analyst
5 1 (5.26%) SQL Data Analyst
5 1 (5.26%) Web Applications Support
Libraries, Frameworks & Software Standards
1 8 (42.11%) LAPP Stack
2 4 (21.05%) LAMP
3 2 (10.53%) HTML
Miscellaneous
1 7 (36.84%) Clustering
2 2 (10.53%) Analytical Skills
2 2 (10.53%) FMCG
3 1 (5.26%) Computer Science
3 1 (5.26%) Credit Risk
3 1 (5.26%) EPoS
3 1 (5.26%) Linux Command Line
3 1 (5.26%) Mainframe
Operating Systems
1 9 (47.37%) Linux
2 6 (31.58%) Windows
3 2 (10.53%) Windows Server 2008
4 1 (5.26%) Android
4 1 (5.26%) Apple iOS
4 1 (5.26%) Unix
4 1 (5.26%) Windows 10
4 1 (5.26%) Windows 7
4 1 (5.26%) Windows 8
4 1 (5.26%) Windows Server
Processes & Methodologies
1 4 (21.05%) DevOps
1 4 (21.05%) Software Engineering
2 3 (15.79%) Analytics
3 2 (10.53%) Actionable Insight
3 2 (10.53%) Business Analytics
3 2 (10.53%) E-Commerce
3 2 (10.53%) Financial Modelling
3 2 (10.53%) Mathematics
4 1 (5.26%) Agile Software Development
4 1 (5.26%) Business Intelligence
4 1 (5.26%) Configuration Management
4 1 (5.26%) Customer Acquisition
4 1 (5.26%) ETL
4 1 (5.26%) High Availability
4 1 (5.26%) ITIL
4 1 (5.26%) ITSM
4 1 (5.26%) Performance Metrics
4 1 (5.26%) PRINCE
4 1 (5.26%) Regression Testing
4 1 (5.26%) Service Delivery
Programming Languages
1 10 (52.63%) Java
2 9 (47.37%) Python
3 8 (42.11%) Bash Shell
3 8 (42.11%) Perl
3 8 (42.11%) Ruby
4 4 (21.05%) C
5 2 (10.53%) PHP
6 1 (5.26%) C++
6 1 (5.26%) COBOL
6 1 (5.26%) VB
6 1 (5.26%) VBA
Qualifications
1 1 (5.26%) PMP
1 1 (5.26%) RHCE
Quality Assurance & Compliance
1 1 (5.26%) Data Quality
1 1 (5.26%) SLA
System Software
1 1 (5.26%) Active Directory
1 1 (5.26%) Docker
Systems Management
1 5 (26.32%) Puppet
2 1 (5.26%) HP Quality Center
2 1 (5.26%) Salt
Vendors
1 5 (26.32%) Microsoft
2 3 (15.79%) Teradata
3 2 (10.53%) HP
4 1 (5.26%) Cisco
4 1 (5.26%) Dell
4 1 (5.26%) Informatica
4 1 (5.26%) Oracle
4 1 (5.26%) Tableau
4 1 (5.26%) Toshiba