MySQL to PostgreSQL Migration · St Albans
MySQL to PostgreSQL Migration in St Albans
Moving St Albans systems from MySQL to PostgreSQL, where years of quietly bad data arrive all at once. MySQL has historically accepted what it was given — impossible dates, values silently truncated, types coerced without complaint — and PostgreSQL refuses all of it, so the migration surfaces every one of those records.
Why this comes up
The problem
The import fails on thousands of rows containing zero dates and values that were silently truncated.
What you get
What we deliver
- Data profiled before migration, so the invalid rows are known in advance
- A decision made per category of bad data rather than fixed row by row
- Types mapped deliberately, since the two systems differ in meaningful ways
- Case sensitivity addressed, as PostgreSQL treats identifiers differently
- Queries reviewed, because MySQL-specific syntax will not run unchanged
- Application behaviour tested, since stricter rejection surfaces latent bugs
Want this scoped for your business in St Albans?
Thirty minutes, no charge, no sales script. You leave with a written summary of what mysql to postgresql migration would actually involve — whether or not you use us.
Working in St Albans
East of England
St Albans is an affluent commuter city with a high concentration of small professional and consulting firms whose clients are mostly in London, so expectations are set by London suppliers at London standards.
Professional services and consultancy systems for small firms serving London clients from a Hertfordshire base.
Sectors we work with in St Albans
- Professional Services
- Financial Services
- Media
- Retail
- Construction
What we work with
Technologies and platforms
- PostgreSQL
- MySQL
- pgloader
- SQL
Who we work with
Industries we serve
- SaaS businesses
- Retail
- Financial services
- Healthcare
- Technology companies
Why us
Why St Albans businesses choose Asionis
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise
How we work
- Step 1
Free consultation
A 30-minute call to understand the problem. You keep the written summary either way.
- Step 2
Proposal
Scope, timeline and a fixed price, in writing, before anything starts.
- Step 3
Build
Short cycles with regular check-ins, so you see progress rather than hear about it.
- Step 4
Launch and support
We handle the go-live and stay available afterwards.
Other services in St Albans
Looking for the full picture? See our MySQL to PostgreSQL Migration services, everything we do in St Albans or browse everything we do.
MySQL to PostgreSQL Migration in St Albans — common questions
- Why does so much data fail to import?
- Because it was never valid. MySQL's traditional behaviour accepted zero dates, truncated overlong strings and converted types quietly, so a long-running database holds records that were always wrong and only now produce an error.
- How should bad data be handled?
- By category rather than individually. Grouping the failures — all zero dates, all truncated values — and deciding a rule for each is both faster and defensible, whereas correcting thousands of rows by hand invites inconsistency and takes far longer.
- Will our queries still work?
- Not all of them. MySQL-specific functions, backtick quoting and its looser grouping rules all need changing, and the differences are usually obvious errors rather than silent ones — which is inconvenient but considerably safer.
- What about case sensitivity?
- It catches people out. PostgreSQL folds unquoted identifiers to lower case and treats quoted ones exactly, so a schema created with mixed-case names from a tool can produce tables that must be quoted forever afterwards — worth settling deliberately at creation.
- Do you work with businesses across Hertfordshire?
- Yes. We are based in Leicester, United Kingdom and work with clients throughout East of England, including St Albans and the surrounding Hertfordshire area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
- What kind of St Albans businesses do you usually work with?
- Professional services and consultancy systems for small firms serving London clients from a Hertfordshire base. Beyond that we work across Professional Services, Financial Services, Media, Retail and Construction.
- Do you cover the areas around St Albans?
- Yes — we work throughout East of England, including London, Milton Keynes, Cambridge. St Albans is an urban area of roughly 150,000+, and we take on work across the wider Hertfordshire region rather than the city boundary alone.
Talk to us about MySQL to PostgreSQL Migration in St Albans
A 30-minute call with someone who would actually work on it. No sales script, no obligation.
- Projects typically launched within 4–8 weeks
- No long-term contracts required
- All team members UK-based
- Dedicated account manager and development team
- Transparent reporting with monthly performance metrics
- Scalable from startup to enterprise