SQL IN Clause Generator

Runs in browser Database

Paste ids, emails or codes from a spreadsheet and get a properly quoted, de-duplicated IN clause, optionally chunked for databases with parameter limits.

Privacy: This tool runs entirely in your browser. Your input never leaves your device.

What is SQL, and why does the dialect matter?

SQL is the query language of relational databases, standardised in outline but implemented with dialect differences — quoting rules, functions, LIMIT versus TOP, date literals — by PostgreSQL, MySQL, SQLite, SQL Server and Oracle. A formatter normalises keywords, indentation and line breaks so a long query can be read and reviewed; a validator parses the statement to find syntax errors before it reaches the database.

Security note: Generated INSERT or IN-clause statements are for fixtures and migrations. In application code, values must go through parameterised queries — building SQL from user input by string concatenation is how SQL injection happens.

How to use SQL IN Clause Generator

  1. Paste the list of ids, emails or codes.
  2. Optionally enter the column name and a maximum group size.
  3. Copy the IN clause into your query.

SQL IN Clause Generator features

  • Paste values one per line or comma/semicolon/tab separated
  • Automatic quoting (numeric lists stay unquoted) with proper escaping
  • De-duplication and blank-line removal
  • Chunking into several IN (…) groups for databases with expression limits
  • NOT IN and one-value-per-line output options
  • Optional column name prefix and dialect-specific quoting

SQL IN Clause Generator example

Emails from a spreadsheet column

Input:

layla@example.com
omar@example.com
layla@example.com

Output:

email IN ('layla@example.com', 'omar@example.com')

Frequently asked questions about SQL IN Clause Generator

How should I paste the values?

One per line (straight from a spreadsheet column) or separated by commas, semicolons or tabs. Blank lines are ignored and surrounding quotes are stripped.

When are values quoted?

In Auto mode, values are quoted unless every value is numeric. Single quotes inside values are escaped as ''. You can force quoting on or off.

What is chunking for?

Oracle rejects IN lists with more than 1000 expressions and other databases slow down on huge lists. Set a maximum and the tool emits several IN (…) groups joined with OR.

Can I generate NOT IN?

Yes, tick NOT IN. Remember that NOT IN with NULL values in the list never matches anything.

References

  • PostgreSQL Documentation: SQL SyntaxThe PostgreSQL Global Development GroupLexical structure of SQL in PostgreSQL: identifiers, quoting, string constants and escaping.
  • SQL As Understood By SQLiteSQLiteThe SQL grammar accepted by SQLite, statement by statement, with railroad diagrams.
  • SQL InjectionOWASP FoundationHow SQL injection works and why parameterised queries, not string building, are the defence.