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Welder Qualification and WPS Register SQL Query Generator

Many shops track WPS and welder qualifications in spreadsheets until an audit asks for a list of who may weld what, today. This generator creates a clean register schema and the queries that matter most.

Fill in

WPS table name

Use your own naming convention.

Welder qualification table name

Sample WPS number

Governing code

Sample welder ID

Expiry window in days

Report items that expire within this many days.

Generated code

Download:

Create tables (generic ANSI SQL)

CREATE TABLE weld_wps (
  wps_no        VARCHAR(30)  NOT NULL PRIMARY KEY,
  revision      VARCHAR(10)  NOT NULL,
  code          VARCHAR(30)  NOT NULL,
  process       VARCHAR(20)  NOT NULL,
  base_material VARCHAR(60),
  thickness_min DECIMAL(8,2),
  thickness_max DECIMAL(8,2),
  filler_class  VARCHAR(30),
  pqr_no        VARCHAR(30),
  status        VARCHAR(15)  DEFAULT 'ACTIVE'
);

CREATE TABLE weld_welder_qual (
  welder_id     VARCHAR(20)  NOT NULL,
  wps_no        VARCHAR(30)  NOT NULL,
  process       VARCHAR(20)  NOT NULL,
  position_code VARCHAR(10)  NOT NULL,
  test_date     DATE         NOT NULL,
  expiry_date   DATE         NOT NULL,
  last_used     DATE,
  PRIMARY KEY (welder_id, wps_no, process, position_code)
);

Insert sample rows

INSERT INTO weld_wps (wps_no, revision, code, process, base_material, thickness_min, thickness_max, filler_class, pqr_no)
VALUES ('WPS-014', 'A', 'ASME IX', 'GMAW', 'Carbon steel P1', 3.0, 25.0, 'ER70S-6', 'PQR-009');

INSERT INTO weld_welder_qual (welder_id, wps_no, process, position_code, test_date, expiry_date, last_used)
VALUES ('W-0231', 'WPS-014', 'GMAW', '3G', DATE '2026-03-10', DATE '2029-03-10', DATE '2026-09-30');

Qualifications expiring soon (PostgreSQL)

SELECT w.welder_id, w.wps_no, w.process, w.position_code, w.expiry_date,
       (w.expiry_date - CURRENT_DATE) AS days_left
FROM weld_welder_qual w
WHERE w.expiry_date <= CURRENT_DATE + INTERVAL '60 days'
ORDER BY w.expiry_date;

Qualifications expiring soon (SQL Server)

SELECT w.welder_id, w.wps_no, w.process, w.position_code, w.expiry_date,
       DATEDIFF(day, GETDATE(), w.expiry_date) AS days_left
FROM weld_welder_qual w
WHERE w.expiry_date <= DATEADD(day, 60, GETDATE())
ORDER BY w.expiry_date;

Continuity check: no welding for six months (PostgreSQL)

-- Many codes require evidence of welding within a set period, often six months.
-- Confirm the exact rule in ASME IX before relying on this query.
SELECT welder_id, wps_no, process, last_used
FROM weld_welder_qual
WHERE last_used IS NULL
   OR last_used < CURRENT_DATE - INTERVAL '6 months'
ORDER BY last_used;

Table and column names are generic placeholders, not tables from any specific ERP or quality product. Adjust types, keys and date functions to your database and verify the continuity and expiry rules in the governing code before using the results for assignments.

Connect the register to your ERP

Optional: a short review of linking WPS and welder qualification data to work orders.

Optional. The tool and every export work without this. No spam.

How to use the generator

Enter your preferred table names, a sample WPS number, a sample welder ID and the expiry window. The tool fills the placeholders in the create, insert and report statements. Copy the code into your SQL client and adjust types to match your database. The schema is generic, so it works as a staging area, a standalone quality database or a model for an extension table inside an ERP.

What the register models

The WPS table holds the procedure, revision, supporting PQR, process, base material range, thickness range and filler class. The welder table ties a welder to a procedure, process and test position, with the test date, expiry date and the last date the welder actually used the process. That last-used date supports continuity checks, since codes such as AWS D1.1 and ISO 9606-1 require evidence of welding within defined periods to keep a qualification valid.

Common mistakes

The queries are only as good as the data and the rules behind them.

Using one expiry date for different codes: ISO 9606-1 and ASME IX apply different rules.
Not updating last used from the production system.
Tracking the WPS without its revision, which breaks audit trails.
Treating a position match as a range match: store the qualified range too if you need it.
Running the PostgreSQL snippet on SQL Server or the reverse.

Frequently Asked Questions

Can I use this inside my ERP database?

Use it as a model, not as a drop-in. Most ERPs restrict direct schema changes and have their own extension mechanisms. Create the tables in a separate schema or use your ERP's user-defined table feature, and follow your vendor's guidance.

How long is a welder qualification valid?

It depends on the code. ISO 9606-1 gives a validity period that requires periodic confirmation, while AWS D1.1 and ASME IX focus on continuity of welding with a given process. Check the current edition and your procedure before setting expiry rules.

Why store the last-used date?

Qualification can lapse if a welder has not used the process within the period the code allows, usually about six months. A last-used date lets you find those welders before they are assigned to work, and re-test where needed.

Do the table names matter?

No. They are placeholders with no connection to any vendor schema. Rename them to match your convention, and add columns such as company, plant, thickness range qualified and inspector sign-off if you need them.

If you want this register tied to routings, work orders and production confirmations in your ERP, Netray can help design the integration with your own team.

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