Question 1

How does the SQL regex replace tool work?

Accepted Answer

Paste your SQL, enter a regex pattern and replacement text, then click Preview to see all matches highlighted. You can scope the replacement to table names only, column names only, comments only, or the entire SQL. Each replacement is shown individually so you can verify before applying. All processing happens in your browser.

Question 2

Can I batch rename multiple tables at once?

Accepted Answer

Yes. Set the scope to 'Table Names' and use a regex like (orders|users|products) with a replacement like new_$1_schema. All matching table references across the entire SQL will be renamed in one operation. The preview shows each match before you commit.

Question 3

Is there an undo function?

Accepted Answer

Yes. Every replace operation is tracked. You can undo the last replace or reset to the original SQL at any time. The tool keeps the original input so you never lose your starting query.

Question 4

What regex flavor does this tool use?

Accepted Answer

The tool uses JavaScript's RegExp engine (ECMAScript regex). This supports all standard features: character classes, groups, backreferences ($1, $2...), alternation, quantifiers, lookaheads, and word boundaries. Flags like g (global) and i (case-insensitive) are exposed as toggles.

Question 5

Is my SQL data sent to a server?

Accepted Answer

No. All regex matching, previewing, and replacement runs entirely in your browser using client-side JavaScript. Nothing is transmitted, stored, or logged. This makes it safe for proprietary SQL and schema information.

SQL Regex Replace

Input SQL

Replace Configuration

Preview (matches found)

Result

SQL Regex Replace

Input SQL

Replace Configuration

Preview (matches found)

Result

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