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BigQuery Migration · Newport

BigQuery Migration in Newport

Migrating Newport organisations onto BigQuery, where the assumption that costs most is that standard SQL simply ports. Dialects differ in date handling, type coercion, window behaviour and a hundred smaller details — and the queries that fail outright are less trouble than the ones that run and return a slightly different answer.

Why this comes up

The problem

The queries were translated, they all execute, and one report's totals differ from the old system by two per cent.

What you get

What we deliver

  • Dialect differences catalogued against the constructs your queries actually use
  • Results compared row by row rather than checked for successful execution
  • Data model revisited, since a columnar store rewards different structures
  • Nested and repeated fields used where they suit the data better than joins
  • Partitioning and clustering designed during migration rather than retrofitted
  • Parallel running until reconciliation across a full reporting cycle is clean

Want this scoped for your business in Newport?

Thirty minutes, no charge, no sales script. You leave with a written summary of what bigquery migration would actually involve — whether or not you use us.

Book a 30-minute call

Working in Newport

Wales

Newport hosts a significant semiconductor cluster and sits on the M4 between Cardiff and Bristol, so its manufacturers work to precision standards and often trade across the border daily.

Precision manufacturing quality systems, and cross-border operations for businesses trading into England.

Sectors we work with in Newport

  • Semiconductors
  • Manufacturing
  • Logistics
  • Public Sector
  • Financial Services

What we work with

Technologies and platforms

  • BigQuery
  • SQL
  • dbt
  • Google Cloud

Who we work with

Industries we serve

  • Retail
  • Media companies
  • Technology companies
  • Financial services
  • Marketing agencies

Why us

Why Newport 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

  1. Step 1

    Free consultation

    A 30-minute call to understand the problem. You keep the written summary either way.

  2. Step 2

    Proposal

    Scope, timeline and a fixed price, in writing, before anything starts.

  3. Step 3

    Build

    Short cycles with regular check-ins, so you see progress rather than hear about it.

  4. Step 4

    Launch and support

    We handle the go-live and stay available afterwards.

BigQuery Migration in Newport — common questions

Which SQL differences cause the most trouble?
Date and timestamp handling, implicit type conversion and null behaviour in aggregates. These rarely produce errors — they produce results that are quietly different, which is why comparing output matters more than confirming that everything ran.
Should the data model change?
Frequently, yes. Structures designed for a row-based system with expensive joins may be better expressed with nested fields here, and carrying the old model across means the platform's strengths go unused while its cost model applies regardless.
How thoroughly should results be compared?
To the row where volume permits, and to aggregate totals with distribution checks where it does not. A summary comparison passes when a small subset differs, and a small subset differing is exactly the failure that surfaces months later in a board pack.
How long should both systems run?
Through at least one complete reporting cycle with reconciliation at each stage. That period is what converts confidence from an assertion into evidence, and it gives the teams who depend on the numbers time to raise discrepancies while there is still something to compare against.
Do you work with businesses across Newport?
Yes. We are based in Leicester, United Kingdom and work with clients throughout Wales, including Newport and the surrounding Newport area. Most collaboration happens remotely, and we travel for kick-offs and key milestones.
What kind of Newport businesses do you usually work with?
Precision manufacturing quality systems, and cross-border operations for businesses trading into England. Beyond that we work across Semiconductors, Manufacturing, Logistics, Public Sector and Financial Services.
Do you cover the areas around Newport?
Yes — we work throughout Wales, including Cardiff, Bristol, Swansea. Newport is an urban area of roughly 160,000+, and we take on work across the wider Newport region rather than the city boundary alone.

Talk to us about BigQuery Migration in Newport

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

Or reach us directly

07707 771599admin@asionis.com

Leicester, United Kingdom