Period
to 20 November 2017

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 6 months to 20 November 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
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 5 4 13
Rank change year-on-year -1 +9 -12
Contract jobs citing SQL 18 28 12
As % of all contract IT jobs advertised in Welwyn Garden City 13.85% 18.06% 9.84%
As % of the Programming Languages category 48.65% 58.33% 20.69%
Number of daily rates quoted 11 21 8
Welwyn Garden City median daily rate £350 £275 £310
Median daily rate % change year-on-year +27.27% -11.29% +12.73%
10th Percentile £213 £150 £269
90th Percentile £475 £350 £342
Hertfordshire median daily rate £364 £350 £360
% change year-on-year +3.93% -2.78% +7.46%
Number of hourly rates quoted 0 0 0
Welwyn Garden City median hourly rate - - -
Hertfordshire median hourly rate £16.81 £28.54 £32.50
% change year-on-year -41.12% -12.18% +160.00%

SQL is in the Programming Languages category. The following 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 coding skills.

All Programming Languages
Welwyn Garden City
Contract vacancies with a requirement for coding skills 37 48 58
As % of all contract IT jobs advertised in Welwyn Garden City 28.46% 30.97% 47.54%
Number of daily rates quoted 22 32 31
Welwyn Garden City median daily rate £363 £308 £325
Median daily rate % change year-on-year +17.89% -5.38% -3.70%
10th Percentile £213 £189 £278
90th Percentile £538 £690 £565
Hertfordshire median daily rate £425 £380 £375
% change year-on-year +11.84% +1.33% +7.14%
Number of hourly rates quoted 0 0 0
Welwyn Garden City median hourly rate - - -
Hertfordshire median hourly rate £17.15 £49.75 £34.50
% change year-on-year -65.52% +44.20% +72.50%

SQL
Job Vacancy Trend in Welwyn Garden City

Job postings citing SQL as a percentage of all IT jobs advertised in Welwyn Garden City.

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 Daily Rate Histogram in Welwyn Garden City

The daily rate distribution of IT jobs citing SQL in Welwyn Garden City over the 6 months to 20 November 2017.

Contractor daily rate histogram 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 20 November 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 5 (27.78%) Oracle
1 5 (27.78%) Data Warehouse
2 4 (22.22%) Microsoft Excel
2 4 (22.22%) SQL Server
2 4 (22.22%) Internet
2 4 (22.22%) Finance
2 4 (22.22%) SQL Server Reporting Services
2 4 (22.22%) SQL Server Integration Services
2 4 (22.22%) Data Analytics
2 4 (22.22%) Analytics
3 3 (16.67%) BDD
3 3 (16.67%) Apache Cassandra
3 3 (16.67%) NoSQL
3 3 (16.67%) Amazon AWS
3 3 (16.67%) CRM
3 3 (16.67%) Big Data
3 3 (16.67%) QA
3 3 (16.67%) RESTful
3 3 (16.67%) Continuous Integration
3 3 (16.67%) SQL Server Analysis Services
3 3 (16.67%) Microservices
3 3 (16.67%) Apache Spark
3 3 (16.67%) Loose Coupling
3 3 (16.67%) Spark Streaming
3 3 (16.67%) Payment Gateway
3 3 (16.67%) Spring Cloud
3 3 (16.67%) Agile Software Development
3 3 (16.67%) TDD
3 3 (16.67%) C#
3 3 (16.67%) Java

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 3 (16.67%) Apache Spark
Applications
1 4 (22.22%) Microsoft Excel
2 1 (5.56%) Microsoft Office
Business Applications
1 3 (16.67%) Payment Gateway
2 1 (5.56%) Oracle EBS
2 1 (5.56%) Oracle Procure-to-Pay
Cloud Services
1 3 (16.67%) Amazon AWS
2 1 (5.56%) Amazon EC2
Communications & Networking
1 4 (22.22%) Internet
2 1 (5.56%) Firewall
2 1 (5.56%) HTTP
2 1 (5.56%) SSL
Database & Business Intelligence
1 5 (27.78%) Data Warehouse
2 4 (22.22%) SQL Server
2 4 (22.22%) SQL Server Integration Services
2 4 (22.22%) SQL Server Reporting Services
3 3 (16.67%) Apache Cassandra
3 3 (16.67%) Big Data
3 3 (16.67%) NoSQL
3 3 (16.67%) SQL Server Analysis Services
4 1 (5.56%) Data Mart
4 1 (5.56%) Enterprise Data Warehouse
4 1 (5.56%) Hadoop
4 1 (5.56%) MS Access
4 1 (5.56%) Oracle Database
4 1 (5.56%) PowerCenter
4 1 (5.56%) TKPROF
General
1 4 (22.22%) Finance
2 2 (11.11%) Banking
2 2 (11.11%) Retail
3 1 (5.56%) Billing
3 1 (5.56%) Financial Institution
3 1 (5.56%) Games
3 1 (5.56%) Pharmaceutical
Job Titles
1 7 (38.89%) Developer
2 4 (22.22%) SQL Developer
3 3 (16.67%) Analyst
3 3 (16.67%) Data Analyst
3 3 (16.67%) Database Developer
4 1 (5.56%) Applications Support
4 1 (5.56%) Data Migration Analyst
4 1 (5.56%) ETL Tester
4 1 (5.56%) Graduate
4 1 (5.56%) Migration Analyst
4 1 (5.56%) Security Engineer
4 1 (5.56%) SQL Analyst
4 1 (5.56%) SQL Data Analyst
4 1 (5.56%) Support Engineer
4 1 (5.56%) Tester
4 1 (5.56%) Web Applications Support
Libraries, Frameworks & Software Standards
1 3 (16.67%) RESTful
1 3 (16.67%) Spark Streaming
1 3 (16.67%) Spring Cloud
1 3 (16.67%) Web Services
2 2 (11.11%) .NET
2 2 (11.11%) HTML
3 1 (5.56%) CSS
3 1 (5.56%) Oracle Fusion
3 1 (5.56%) Regular Expression
Miscellaneous
1 2 (11.11%) Analytical Skills
1 2 (11.11%) Client/Server
2 1 (5.56%) Algorithms
2 1 (5.56%) FMCG
2 1 (5.56%) Security Operations Centre
Operating Systems
1 3 (16.67%) Linux
1 3 (16.67%) Unix
2 1 (5.56%) Windows
2 1 (5.56%) Windows Server
Processes & Methodologies
1 4 (22.22%) Analytics
1 4 (22.22%) Data Analytics
2 3 (16.67%) Agile Software Development
2 3 (16.67%) BDD
2 3 (16.67%) Continuous Integration
2 3 (16.67%) CRM
2 3 (16.67%) Data Modelling
2 3 (16.67%) E-Commerce
2 3 (16.67%) ETL
2 3 (16.67%) Loose Coupling
2 3 (16.67%) Microservices
2 3 (16.67%) TDD
3 2 (11.11%) Collaborative Working
3 2 (11.11%) Data Analysis
3 2 (11.11%) Data Extraction
3 2 (11.11%) ITIL
4 1 (5.56%) Computer Architecture
4 1 (5.56%) Data Migration
4 1 (5.56%) Manual Testing
4 1 (5.56%) Test Scripting
Programming Languages
1 3 (16.67%) C#
1 3 (16.67%) Java
1 3 (16.67%) PHP
2 2 (11.11%) Python
2 2 (11.11%) VBA
3 1 (5.56%) COBOL
3 1 (5.56%) JavaScript
3 1 (5.56%) MATLAB
3 1 (5.56%) Perl
3 1 (5.56%) Shell Script
Qualifications
1 2 (11.11%) ITIL Certification
2 1 (5.56%) Security Cleared
Quality Assurance & Compliance
1 3 (16.67%) QA
System Software
1 1 (5.56%) Virtual Desktop
Systems Management
1 1 (5.56%) HP Quality Center
1 1 (5.56%) Symantec Endpoint Protection
Vendors
1 5 (27.78%) Oracle
2 2 (11.11%) Microsoft
2 2 (11.11%) Sun
2 2 (11.11%) Tableau
3 1 (5.56%) EMC
3 1 (5.56%) FireEye
3 1 (5.56%) HP
3 1 (5.56%) Informatica
3 1 (5.56%) Intel
3 1 (5.56%) McAfee
3 1 (5.56%) Salesforce.com
3 1 (5.56%) Symantec
3 1 (5.56%) Teradata