SQL WHERE Builder
Enter conditions line by line to quickly build placeholder-based WHERE clauses for query drafting.
Status
Runs in your browser. No input is sent to a server.
How to use
Enter conditions as `column|operator|value` and click Build. Use `a,b,c` for `IN`, and `value1|value2` for `BETWEEN`.
Notes (this tool)
- `IS NULL` / `IS NOT NULL` do not require values.
- Output assumes placeholder binding. Do not execute by concatenating raw values.
About this page
What does this tool do?
Parses condition rows in `column|operator|value` form and generates `WHERE ...` plus bind parameters.
Useful for reducing manual SQL mistakes, especially around `IN` and `BETWEEN` expressions.
What this tool does
- Switch between `AND` and `OR` joins
- Switch placeholder style (named / `?`)
- Generate `IN` / `NOT IN` / `BETWEEN` / `IS NULL` variants
- Output WHERE clause and parameter JSON together
Notes
- This tool does not execute SQL. Verify dialect differences (MySQL/PostgreSQL, etc.) in your runtime.
- Generated SQL assumes placeholders. Avoid string-concatenated execution.
Referenced specs
- SQL-92 (comparison and logical operators)
- Placeholder conventions per RDBMS/driver
FAQ
How are value types handled?
Values are mostly treated as strings. `NULL`/`true`/`false`/numbers are heuristically detected, but final bind types should be controlled by your app.
What if column names are reserved words?
Enable backtick-quoting for identifiers (note: quote symbols vary by SQL dialect).
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