SQL

SQL IN Clause Builder

Turns a pasted list of values into a quoted, de-duplicated, line-wrapped IN clause.

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How to use this tool

  1. Paste your values, one per line or comma separated.
  2. Set the column name, and choose text or number so the values are quoted correctly.
  3. Select Build clause and copy the result into your query.

What sql in clause builder does

You have a column of ids from a spreadsheet or a ticket and you need them inside an IN clause. This splits the list on newlines or commas, strips any quotes already present, removes duplicates, quotes each value for the type you choose, and wraps the result at a sensible width so the query stays readable.

Long IN lists are a warning sign as much as a convenience. Most databases plan them poorly past a few hundred entries, and some reject them outright past a parameter limit, so once a list is that long the faster answer is usually to load the values into a temporary table and join. The tool tells you when you have crossed into that territory.

Frequently asked questions

By default, yes, since a repeated value in an IN list changes nothing about the result. You can turn that off if you want the list to match your source exactly.

That depends on the database - some have a hard parameter limit in the low thousands, and most plan long lists badly well before that. Past a few hundred values, loading them into a temporary table and joining is usually faster.

It is escaped by doubling the single quote, so the literal stays valid. If your values come from user input rather than a fixed list, use bound parameters instead of building the clause as text.