Format SQL with keyword capitalization, indented joins and nested subqueries, and compact minify mode to turn messy queries into readable reports offline.
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Quick answer: SQL Formatter — Format SQL queries Free, no signup, runs in your browser. See below for the interactive tool, 4-step guide and FAQs.
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Generic ANSI with keyword uppercasing, preserving strings and comments across MySQL and Postgres flavors. For illustration, select a from t becomes SELECT with indented joins. A 50KB query holding 200 lines formats within a second, easing legacy cleanup without dialect-specific rewrites for routine reporting.
No. Formatting executes solely inside this tab, so a 20KB report holding identifiers never traverses networks. For instance, demo queries remain resident. The data stays local; there is no upload and nothing persists after the tab closes. Avoid production data on shared machines regardless of safeguards.
Yes. Minify collapses to one line while preserving strings and comments for execution. For example, SELECT double gap a FROM t becomes single-gap valid statement. A 10KB query drops thirty percent. Copy minified for logs and pretty for reviews. JSON payloads live at /json-formatter for API work.
Indent each subquery level two spaces, capitalize SELECT and WHERE, and align JOIN conditions vertically for scanning. For example, outer select from inner grouped aggregate reads clearly when inner block indents. Alias tables briefly, list columns explicitly, and test formatted statements in staging before promoting to production reporting jobs.
Formatting capitalizes keywords and indents joins and subqueries for legible reporting. Example 1: select a from t where x equals 1 becomes SELECT with indented WHERE. Example 2: a 50KB query holding 200 lines formats within a second, revealing join order. Analysts cleanse legacy dumps, developers review pull requests and auditors trace logic. Strings and comments preserve exactly, aliases stay intact, and consistent casing eases scanning. Well-structured statements reduce misreading of AND OR precedence, highlight missing filters, and accelerate onboarding across data teams handling growing warehouse estates.
Reference action table: SELECT uppercases | JOIN indents with ON | WHERE indents with AND | nested select indents two spaces | minify collapses to one line | strings preserve exactly. Nested selects indent progressively, join conditions align vertically. Edge case: exotic procedural extensions may misalign, demanding manual tweaks. Large 500KB dumps format in seconds but split on modest handsets. Copy pretty for reviews, minified for logs. Always trial formatted SQL in staging because whitespace changes never alter semantics yet reveal hidden logic faults. Ateliers contrasting pretty versus minified outputs teach version control hygiene through diff exercises that highlight logical edits across pull requests while enforcing review checklists quarterly now daily and linters.
Paste messy select with joins, press Format for indented structure, toggle Minify for single-line logging variant, copy into editor. Second trial: format nested aggregate with group by to confirm tiering. Limitation: generic ANSI only, exotic dialects need adaptation, and validation stays syntactic rather than semantic. For JSON outputs from queries, see the tool at /json-formatter for payload handling. For integrity fingerprints of result sets, see the maker at /hash-generator for checksum concepts.