Format SQL Stored Procedures Online — Beautify Procs in Your Browser

Stored procedures are the worst SQL to format by hand. They have nested BEGIN/END blocks, IF/ELSEIF/ELSE branches, EXCEPTION handlers, LOOP/WHILE constructs, cursor declarations, and inline DBMS_OUTPUT or RAISE statements. Built-in IDE formatters often flatten the nesting, leaving you with a wall of text where you can no longer see what is inside what.

Our formatter handles stored procedure bodies cleanly. Pick the dialect (MySQL, PostgreSQL, T-SQL, or PL/SQL via Standard SQL), paste the procedure, and you get nested indentation per block level. No upload, no IDE, no signup.

Why Stored Procedures Are Harder to Format Than Plain Queries

A SELECT statement is a flat structure: SELECT, FROM, WHERE, GROUP BY, ORDER BY. Each clause has a clear position. A stored procedure is a nested tree of control flow:

• Block scope — DECLARE/BEGIN/END blocks can nest inside each other 4-5 levels deep.
• Conditional branches — IF/ELSEIF/ELSE/END IF, with the body of each branch indented under the keyword.
• Loops — LOOP, WHILE, FOR, FOREACH each with a body and an exit condition.
• Cursor declarations — CURSOR c_name IS SELECT ... FROM ..., where the SELECT itself is a multi-line query that needs its own indentation inside the cursor block.
• Exception handlers — WHEN NO_DATA_FOUND THEN, WHEN OTHERS THEN, etc., each with an action that may include nested IF or RAISE statements.
• Embedded queries — INSERT/UPDATE/DELETE/SELECT statements inside the procedure body need their own internal formatting.

The formatting tool needs to track all of this simultaneously. Many IDE formatters give up and flatten everything to one indent level.

How Our Formatter Tracks Nesting in Stored Procedures

The sql-formatter library we use tracks block nesting natively. Here is what it handles per dialect:

T-SQL (SQL Server / Azure SQL): CREATE PROCEDURE with BEGIN/END, IF/ELSE blocks (with optional BEGIN/END), WHILE loops, TRY/CATCH error handling, GOTO labels, and inline TRANSACTION management.

PL/SQL (Oracle): CREATE OR REPLACE PROCEDURE with DECLARE, BEGIN, EXCEPTION, END blocks. FOR loops over cursors, WHILE loops, IF/ELSIF/ELSE/END IF chains, RAISE_APPLICATION_ERROR calls, and DBMS_OUTPUT.PUT_LINE statements.

MySQL/MariaDB: DELIMITER //, CREATE PROCEDURE with BEGIN/END, DECLARE for variables and cursors, IF/THEN/ELSEIF/ELSE/END IF, LOOP/LEAVE/ITERATE constructs, REPEAT/UNTIL, WHILE/DO/END WHILE, and DECLARE HANDLER FOR exception handling.

PostgreSQL: CREATE OR REPLACE FUNCTION ... LANGUAGE plpgsql with DECLARE, BEGIN, EXCEPTION, END blocks. FOR loops, WHILE loops, IF/ELSIF/ELSE/END IF, EXIT and CONTINUE, RAISE NOTICE / EXCEPTION.

Each block level gets its own indentation step. You can spot the structure visually instead of mentally tracking braces.

How to Format a Stored Procedure in Your Browser

1. Copy the entire procedure — from CREATE PROCEDURE through the final END (or END procedure_name semicolon for PL/SQL).
2. Paste it into the formatter input — handles up to ~500KB of code.
3. Pick the right dialect — Transact-SQL for SQL Server, MySQL for MySQL/MariaDB, Standard SQL for Oracle PL/SQL, PostgreSQL for Postgres functions.
4. Set indent — 2 or 4 spaces — pick what your team uses.
5. Toggle uppercase keywords — most procedure style guides use uppercase.
6. Click Format — output appears with each block properly nested.
7. Verify the structure visually — count nested blocks, confirm IF/ELSEIF chains are intact, check exception handlers.
8. Copy back into your IDE or save as a .sql file.

For very large procedures (500+ lines), format in sections — paste one BEGIN/END block at a time and reassemble.

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Stored Procedure Formatting Checklist — Spot Issues Visually

Once you have formatted your procedure, scan for these visual cues to catch bugs:

• Mismatched BEGIN/END counts — every BEGIN should have a matching END at the same indent level. If they do not line up visually, you have a missing END.
• Unhandled exception paths — if a procedure has DML but no EXCEPTION block (or no WHEN OTHERS), errors will propagate uncaught.
• Cursor without close — opened cursors that are never closed will leak resources. Search for OPEN c_name and verify a matching CLOSE c_name exists.
• Transaction without commit — BEGIN TRANSACTION without COMMIT or ROLLBACK is a deadlock waiting to happen.
• IF without ELSE — for branching logic on user input, missing ELSE branches mean some inputs are silently ignored.
• Hard-coded literals where parameters belong — once formatted, hard-coded values stand out as obvious anti-patterns.

None of these are bugs the formatter catches automatically — but proper indentation makes them visible to a human reader.

Real Stored Procedure Types Tested With This Tool

CRUD wrappers. Simple insert/update/delete procedures with parameter validation and a single SELECT for the result. Format cleanly with all dialects.

ETL procedures. Long procedures that read from staging tables, transform data, and write to fact/dimension tables. Often have 5-10 nested IF blocks for data quality checks. Format reveals the control flow clearly.

Batch processing loops. Procedures that process records in batches using WHILE or LOOP. The loop body and exit conditions become visible at a glance.

Reporting procedures. Procedures that build dynamic SQL strings and execute them with sp_executesql or EXECUTE IMMEDIATE. The dynamic SQL parts stay as strings; the surrounding logic gets nested properly.

Audit triggers. Trigger bodies (CREATE TRIGGER ... FOR INSERT, UPDATE, DELETE) with conditional logic for each operation type. Each branch indents clearly.

Related Browser Tools for Stored Procedure Developers

Beyond formatting, these tools help with the full procedure development workflow:

SQL diff checker — compare two versions of a procedure (current production vs new version) using the SQL query diff tool.

Code diff checker — for line-by-line review of procedure changes, the code diff tool highlights every change.

Cron expression generator — many procedures are called from scheduled jobs. Generate the schedule with our cron generator.

JSON formatter — modern procedures often handle JSON parameters. Use the JSON formatter to validate the input shape.

Frequently Asked Questions

Does this work for procedures with multiple BEGIN/END blocks?

Yes. Nested BEGIN/END blocks get incremental indentation per level. You can have 4-5 levels of nesting and the structure stays visible.

Will the formatter execute the procedure to validate it?

No. This is text-only formatting. The procedure is reformatted in your browser without being parsed by a database engine. To validate semantically, run it in your dev database.

Can I format Oracle PL/SQL packages with multiple procedures?

Yes. Paste the entire CREATE OR REPLACE PACKAGE BODY at once. Each procedure inside gets its own indentation level, and the boundaries between procedures stay visible.

Does it handle DELIMITER // for MySQL stored procedures?

Yes. The DELIMITER directive and the procedure body inside it format cleanly. The procedure terminator (// or whatever you set) is preserved.

What about T-SQL procedures with TRY/CATCH error handling?

Yes. BEGIN TRY / END TRY / BEGIN CATCH / END CATCH blocks get proper nesting. The body of the TRY block and the body of the CATCH block each get their own indent level.