Parse simple SQL statements into an abstract syntax tree (AST) with the visited tableList, columnList and convert it back to SQL.
- support multiple sql statement seperate by semicolon
- support select, delete, update and insert type
- support drop, truncate and rename command
- output the table and column list that the sql visited with the corresponding authority
- support various databases engine
From npmjs
npm install node-sql-parser --save or yarn add node-sql-parser
npm install @taozhi8833998/node-sql-parser --registry=https://npm.pkg.github.com/
Import the JS file in your page:
// support all database parser, but file size is about 750K <script src="https://unpkg.com/node-sql-parser/umd/index.umd.js"></script> // or you can import specified database parser only, it's about 150K <script src="https://unpkg.com/node-sql-parser/umd/mysql.umd.js"></script> <script src="https://unpkg.com/node-sql-parser/umd/postgresql.umd.js"></script>
NodeSQLParserobject is onwindow
<!DOCTYPE html> <html lang="en" > <head> <title>node-sql-parser</title> <meta charset="utf-8" /> </head> <body> <p><em>Check console to see the output</em></p> <script src="https://unpkg.com/node-sql-parser/umd/mysql.umd.js"></script> <script> window.onload = function () { // Example parser const parser = new NodeSQLParser.Parser() const ast = parser.astify("select id, name from students where age < 18") console.log(ast) const sql = parser.sqlify(ast) console.log(sql) } </script> </body> </html>
- BigQuery
- DB2
- Hive
- MariaDB
- Mysql
- PostgresQL
- TransactSQL
- FlinkSQL
- New issue could be made for other new database.
// import Parser for all databases const { Parser } = require('node-sql-parser'); const parser = new Parser(); const ast = parser.astify('SELECT * FROM t'); // mysql sql grammer parsed by default console.log(ast);
astforSELECT * FROM t
{
"with": null,
"type": "select",
"options": null,
"distinct": null,
"columns": "*",
"from": [
{
"db": null,
"table": "t",
"as": null
}
],
"where": null,
"groupby": null,
"having": null,
"orderby": null,
"limit": null
}const opt = { database: 'MySQL' // MySQL is the default database } // import mysql parser only const { Parser } = require('node-sql-parser/build/mysql'); const parser = new Parser() // opt is optional const ast = parser.astify('SELECT * FROM t', opt); const sql = parse.sqlify(ast, opt); console.log(sql); // SELECT * FROM `t`
const opt = { database: 'MariaDB' // MySQL is the default database } const { Parser } = require('node-sql-parser/build/mariadb'); const parser = new Parser() // opt is optional const { tableList, columnList, ast } = parser.parse('SELECT * FROM t', opt);
- get the table list that the sql visited
- the format is {type}::{dbName}::{tableName} // type could be select, update, delete or insert
const opt = { database: 'MySQL' } const { Parser } = require('node-sql-parser/build/mysql'); const parser = new Parser(); // opt is optional const tableList = parser.tableList('SELECT * FROM t', opt); console.log(tableList); // ["select::null::t"]
- get the column list that the sql visited
- the format is {type}::{tableName}::{columnName} // type could be select, update, delete or insert
- for
select *,deleteandinsert into tableName values()without specified columns, the.*column authority regex is required
const opt = { database: 'MySQL' } const { Parser } = require('node-sql-parser/build/mysql'); const parser = new Parser(); // opt is optional const columnList = parser.columnList('SELECT t.id FROM t', opt); console.log(columnList); // ["select::t::id"]
- check table authority
whiteListCheckfunction check ontablemode andMySQLdatabase by default
const { Parser } = require('node-sql-parser'); const parser = new Parser(); const sql = 'UPDATE a SET id = 1 WHERE name IN (SELECT name FROM b)' const whiteTableList = ['(select|update)::(.*)::(a|b)'] // array that contain multiple authorities const opt = { database: 'MySQL', type: 'table', } // opt is optional parser.whiteListCheck(sql, whiteTableList, opt) // if check failed, an error would be thrown with relevant error message, if passed it would return undefined
- check column authority
const { Parser } = require('node-sql-parser'); const parser = new Parser(); const sql = 'UPDATE a SET id = 1 WHERE name IN (SELECT name FROM b)' const whiteColumnList = ['select::null::name', 'update::a::id'] // array that contain multiple authorities const opt = { database: 'MySQL', type: 'column', } // opt is optional parser.whiteListCheck(sql, whiteColumnList, opt) // if check failed, an error would be thrown with relevant error message, if passed it would return undefined
This project is based on the SQL parser extracted from flora-sql-parser module.
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