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https://github.com/vertical-blank/sql-formatter
SQL formatter written with only Java Standard Library, without dependencies.
https://github.com/vertical-blank/sql-formatter
java java8 sql sql-beautifier sql-formatter
Last synced: about 1 month ago
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SQL formatter written with only Java Standard Library, without dependencies.
- Host: GitHub
- URL: https://github.com/vertical-blank/sql-formatter
- Owner: vertical-blank
- License: mit
- Created: 2019-03-20T04:33:44.000Z (over 5 years ago)
- Default Branch: master
- Last Pushed: 2024-04-09T10:00:58.000Z (7 months ago)
- Last Synced: 2024-09-30T13:41:06.722Z (about 1 month ago)
- Topics: java, java8, sql, sql-beautifier, sql-formatter
- Language: Java
- Homepage:
- Size: 427 KB
- Stars: 224
- Watchers: 11
- Forks: 47
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# sql-formatter
[](https://search.maven.org/search?q=g:%22com.github.vertical-blank%22%20AND%20a:%22sql-formatter%22)
[](https://codecov.io/gh/vertical-blank/sql-formatter)
Java port of great SQL formatter .
Written with only Java Standard Library, without dependencies.
[Demo](http://www.vertical-blank.com/sql-formatter/)
Demo is running on Google Cloud Function, with native-compiled shared library by GraalVM.
This does not support:
- Stored procedures.
- Changing of the delimiter type to something else than ;.
## Usage
### Maven
```xml
com.github.vertical-blank
sql-formatter
2.0.5
```
### Gradle
```gradle
implementation 'com.github.vertical-blank:sql-formatter:2.0.5'
```
## Examples
You can easily use `com.github.vertical_blank.sqlformatter.SqlFormatter` :
```java
SqlFormatter.format("SELECT * FROM table1")
```
This will output:
```sql
SELECT
*
FROM
table1
```
You can also pass `FormatConfig` object built by builder:
```js
SqlFormatter.format('SELECT * FROM tbl',
FormatConfig.builder()
.indent(" ") // Defaults to two spaces
.uppercase(true) // Defaults to false (not safe to use when SQL dialect has case-sensitive identifiers)
.linesBetweenQueries(2) // Defaults to 1
.maxColumnLength(100) // Defaults to 50
.params(Arrays.asList("a", "b", "c")) // Map or List. See Placeholders replacement.
.build()
);
```
### Dialect
You can pass dialect `com.github.vertical_blank.sqlformatter.languages.Dialect` or `String` to `SqlFormatter.of` :
```java
SqlFormatter
.of(Dialect.N1ql) // Recommended
//.of("n1ql") // String can be passed
.format("SELECT *");
```
SQL formatter supports the following dialects:
- **sql** - [Standard SQL][]
- **mariadb** - [MariaDB][]
- **mysql** - [MySQL][]
- **postgresql** - [PostgreSQL][]
- **db2** - [IBM DB2][]
- **plsql** - [Oracle PL/SQL][]
- **n1ql** - [Couchbase N1QL][]
- **redshift** - [Amazon Redshift][]
- **spark** - [Spark][]
- **tsql** - [SQL Server Transact-SQL][tsql]
### Extend formatters
Formatters can be extended as below :
```java
SqlFormatter
.of(Dialect.MySql)
.extend(cfg -> cfg.plusOperators("=>"))
.format("SELECT * FROM table WHERE A => 4")
```
Then it results in:
```sql
SELECT
*
FROM
table
WHERE
A => 4
```
### Placeholders replacement
You can pass `List` or `Map` to `format` :
```java
// Named placeholders
Map namedParams = new HashMap<>();
namedParams.put("foo", "'bar'");
SqlFormatter.of(Dialect.TSql).format("SELECT * FROM tbl WHERE foo = @foo", namedParams);
// Indexed placeholders
SqlFormatter.format("SELECT * FROM tbl WHERE foo = ?", Arrays.asList("'bar'"));
```
Both result in:
```sql
SELECT
*
FROM
tbl
WHERE
foo = 'bar'
```
## Build
Building this library requires JDK 11 because of [ktfmt](https://github.com/facebookincubator/ktfmt).
[standard sql]: https://en.wikipedia.org/wiki/SQL:2011
[couchbase n1ql]: http://www.couchbase.com/n1ql
[ibm db2]: https://www.ibm.com/analytics/us/en/technology/db2/
[oracle pl/sql]: http://www.oracle.com/technetwork/database/features/plsql/index.html
[amazon redshift]: https://docs.aws.amazon.com/redshift/latest/dg/cm_chap_SQLCommandRef.html
[spark]: https://spark.apache.org/docs/latest/api/sql/index.html
[postgresql]: https://www.postgresql.org/
[mariadb]: https://mariadb.com/
[mysql]: https://www.mysql.com/
[tsql]: https://docs.microsoft.com/en-us/sql/sql-server/