libsyntaqlite for Python
libsyntaqlite is a fast, embeddable parser, formatter, and static analyzer for SQLite SQL. The syntaqlite package provides its Python API.
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pip install syntaqlite
The package requires Python 3.10 or later. Wheels are available for Linux (x86_64, aarch64), macOS (x86_64, arm64), and Windows (x86_64).
API
Everything goes through a Syntaqlite instance. Create one and reuse it across many calls:
import syntaqlite
with syntaqlite.Syntaqlite() as sq:
print(sq.format_sql("select 1"))
Formatting
sql = "select u.id, u.name, p.title from users u join posts p on u.id = p.user_id where u.active = 1 and p.published = true order by p.created_at desc limit 10"
print(sq.format_sql(sql))
SELECT u.id, u.name, p.title
FROM users AS u
JOIN posts AS p ON u.id = p.user_id
WHERE
u.active = 1
AND p.published = true
ORDER BY
p.created_at DESC
LIMIT 10;
Raises syntaqlite.FormatError on invalid input.
Parsing
sq.parse() returns a full AST as typed Python objects, one per statement:
stmts = sq.parse("SELECT 1 + 2 FROM foo")
stmt = stmts[0] # SelectStmt
print(type(stmt).__name__) # SelectStmt
print(stmt.columns[0].expr) # BinaryExpr(...)
print(stmt.from_clause) # TableRef(...)
print(stmt.where_clause) # None
Every node type is a __slots__ class with typed attributes, which supports
IDE completion and isinstance checks:
from syntaqlite.nodes import SelectStmt, BinaryExpr
assert isinstance(stmt, SelectStmt)
assert isinstance(stmt.columns[0].expr, BinaryExpr)
Enum and flag fields are IntEnum/IntFlag from syntaqlite.enums:
from syntaqlite.enums import BinaryOp
expr = stmt.columns[0].expr
print(expr.op) # BinaryOp.PLUS
For performance-sensitive code, use sq.parse_raw() to get plain dicts
instead of typed objects.
Tokenizing
for tok in sq.tokenize("SELECT 1 + 2"):
print(tok["text"], tok["category"])
SELECT keyword
other
1 number
other
+ operator
other
2 number
Each token is a dict with text, offset, length, type, and category fields.
Analysis
Check SQL against a schema without touching a database. Catches unknown tables, columns, functions, CTE column mismatches, and more.
schema = syntaqlite.Schema(
tables=[syntaqlite.Table("users", columns=["id", "name", "email"])],
)
result = sq.analyze("SELECT nme FROM users", schema)
for d in result.diagnostics:
print(f"{d.severity}: {d.message}")
error: unknown column 'nme'
Switch output to get formatted diagnostics with source locations and suggestions:
print(sq.analyze(
"SELECT nme FROM users", schema,
output=syntaqlite.AnalysisOutput.TEXT,
))
error: unknown column 'nme'
--> <input>:1:8
|
1 | SELECT nme FROM users
| ^~~
= help: did you mean 'name'?
Schema also accepts raw DDL:
schema = syntaqlite.Schema(ddl="CREATE TABLE orders (id INTEGER, total REAL);")
result = sq.analyze("SELECT * FROM orders", schema)
Column lineage
For query-bearing statements, the result includes column lineage:
schema = syntaqlite.Schema(
tables=[syntaqlite.Table("users", columns=["id", "name", "email"])],
)
result = sq.analyze("SELECT id, name FROM users", schema)
for col in result.lineage.columns:
print(f"{col.name} <- {col.origin}")
id <- users.id
name <- users.name
CLI
The pip package also bundles the syntaqlite binary:
syntaqlite fmt -e "select 1, 2, 3"
syntaqlite analyze query.sql
syntaqlite parse -e "SELECT * FROM users"
The CLI supports pinning to a specific SQLite version or enabling compile-time flags to match your target environment:
syntaqlite --sqlite-version 3.32.0 analyze query.sql
syntaqlite --sqlite-cflag SQLITE_ENABLE_MATH_FUNCTIONS analyze query.sql
See the CLI reference for all commands and flags.
License
Apache 2.0. SQLite components are public domain under the SQLite blessing.
1 maintainer
Release files for syntaqlite 0.8.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| syntaqlite-0.8.0-py3-none-win_amd64.whl | Python 3 | none | Windows x86-64 | Details |
| syntaqlite-0.8.0-py3-none-pyemscripten_2026_0_wasm32.whl | Python 3 | none | PyEmscripten 2026.0+ WebAssembly | Details |
| syntaqlite-0.8.0-py3-none-manylinux_2_28_x86_64.whl | Python 3 | none | Linux glibc 2.28+ x86-64 | Details |
| syntaqlite-0.8.0-py3-none-manylinux_2_28_aarch64.whl | Python 3 | none | Linux glibc 2.28+ ARM64 | Details |
| syntaqlite-0.8.0-py3-none-macosx_11_0_universal2.whl | Python 3 | none | macOS 11.0+ universal2 (ARM64, x86-64) | Details |
| syntaqlite-0.8.0-py3-none-macosx_10_13_universal2.whl | Python 3 | none | macOS 10.13+ universal2 (ARM64, x86-64) | Details |
Total release size: 14.9 MB
Release files / syntaqlite-0.8.0-py3-none-win_amd64.whl
| Download URL | syntaqlite-0.8.0-py3-none-win_amd64.whl |
|---|---|
| Size | 2.6 MB |
| Tags | Python 3 Windows x86-64 |
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| Size | 3.2 MB |
| Tags | Linux glibc 2.28+ x86-64 Python 3 |
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| Tags | Linux glibc 2.28+ ARM64 Python 3 |
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