README.md

JSqlParser 4.7 Website

Summary

Please visit the WebSite. JSqlParser is a RDBMS agnostic SQL statement parser. It translates SQL statements into a traversable hierarchy of Java classes (see Samples):

SELECT 1 FROM dual WHERE a = b

SQL Text
 └─Statements: statement.select.PlainSelect
    ├─selectItems: statement.select.SelectItem
    │  └─LongValue: 1
    ├─Table: dual
    └─where: expression.operators.relational.EqualsTo
       ├─Column: a
       └─Column: b

String sqlStr = "select 1 from dual where a=b";

PlainSelect select = (PlainSelect) CCJSqlParserUtil.parse(sqlStr);

SelectItem selectItem =
        select.getSelectItems().get(0);
Assertions.assertEquals(
        new LongValue(1)
        , selectItem.getExpression());

Table table = (Table) select.getFromItem();
Assertions.assertEquals("dual", table.getName());

EqualsTo equalsTo = (EqualsTo) select.getWhere();
Column a = (Column) equalsTo.getLeftExpression();
Column b = (Column) equalsTo.getRightExpression();
Assertions.assertEquals("a", a.getColumnName());
Assertions.assertEquals("b", b.getColumnName());
}

Supported Grammar and Syntax

JSqlParser aims to support the SQL standard as well as all major RDBMS. Any missing syntax or features can be added on demand.

RDBMS	Statements
Oracle MS SQL Server and Sybase Postgres MySQL and MariaDB DB2 H2 and HSQLDB and Derby SQLite	SELECT INSERT, UPDATE, UPSERT, MERGE DELETE, TRUNCATE TABLE CREATE ..., ALTER ...., DROP ... WITH ...

JSqlParser can also be used to create SQL Statements from Java Code with a fluent API (see Samples).

Alternatives to JSqlParser?

General SQL Parser looks pretty good, with extended SQL syntax (like PL/SQL and T-SQL) and java + .NET APIs. The tool is commercial (license available online), with a free download option.

Documentation

1. Samples
2. Build Instructions and Maven Artifact
3. Contribution
4. Change Log
5. Issues

License

JSqlParser is dual licensed under LGPL V2.1 or Apache Software License, Version 2.0.