## Sql

### Description

Executes a series of SQL statements via JDBC to a database. Statements can either be read in from a text file using the src attribute or from between the enclosing SQL tags.

Multiple statements can be provided, separated by semicolons (or the defined delimiter). Individual lines within the statements can be commented using either --, // or REM at the start of the line.

The autocommit attribute specifies whether auto-commit should be turned on or off whilst executing the statements. If auto-commit is turned on each statement will be executed and committed. If it is turned off the statements will all be executed as one transaction.

The onerror attribute specifies how to proceed when an error occurs during the execution of one of the statements. The possible values are: continue execution, only show the error; stop execution and commit transaction; and abort execution and transaction and fail task.

Proxies. Some JDBC drivers (including the Oracle thin driver), use the JVM's proxy settings to route their JDBC operations to the database. Since Ant1.7, Ant running on Java1.5 or later defaults to using the proxy settings of the operating system. Accordingly, the OS proxy settings need to be valid, or Ant's proxy support disabled with `-noproxy` option.

### Parameters

Attribute | Description | Required
driver | Class name of the jdbc driver | Yes
url | Database connection url | Yes
userid | Database user name | Yes
password | Database password | Yes
src | File containing SQL statements | Yes, unless statements enclosed within tags
encoding | The encoding of the files containing SQL statements | No - defaults to default JVM encoding
delimiter | String that separates SQL statements | No, default ";"
autocommit | Auto commit flag for database connection (default false) | No, default "false"
print | Print result sets from the statements (default false) | No, default "false"
showheaders | Print headers for result sets from the statements (default true) | No, default "true"
showtrailers | Print trailer for number of rows affected (default true) | No, default "true"
output | Output file for result sets (defaults to System.out) | No (print to System.out by default)
append | whether output should be appended to or overwrite an existing file. Defaults to false. | No
classpath | Classpath used to load driver | No (use system classpath)
classpathref | The classpath to use, given as a reference to a path defined elsewhere. | No (use system classpath)
onerror | Action to perform when statement fails: continue, stop, abort | No, default "abort"
rdbms | Execute task only if this rdbms | No (no restriction)
version | Execute task only if rdbms version match | No (no restriction)
caching | Should the task cache loaders and the driver? | No (default=true)
delimitertype | Control whether the delimiter will only be recognized on a line by itself. Can be "normal" -anywhere on the line, or "row", meaning it must be on a line by itself | No (default:normal)
keepformat | Control whether the format of the sql will be preserved. Usefull when loading packages and procedures. | No (default=false)
escapeprocessing | Control whether the Java statement object will perform escape substitution. See Statement's API docs for details. Since Ant 1.6. | No (default=true)
expandproperties | Set to true to turn on property expansion in nested SQL, inline in the task or nested transactions. Since Ant 1.7. | No (default=false)

### Parameters specified as nested elements

#### transaction

Use nested `<transaction>` elements to specify multiple blocks of commands to the executed executed in the same connection but different transactions. This is particularly useful when there are multiple files to execute on the same schema.

Attribute | Description | Required
src | File containing SQL statements | Yes, unless statements enclosed within tags

The `<transaction>` element supports any resource or single element resource collection as nested element to specify the resource containing the SQL statements.

#### any resource or resource collection

You can specify multiple sources via nested resource collection elements. Each resource of the collection will be run in a transaction of its own. Prior to Ant 1.7 only filesets were supported. Use a sort resource collection to get a predictable order of transactions.

#### classpath

`Sql`'s classpath attribute is a PATH like structure and can also be set via a nested classpath element. It is used to load the JDBC classes.

### Examples

>     <sql
>         driver="org.database.jdbcDriver"
>         url="jdbc:database-url"
>         userid="sa"
>         password="pass"
>         src="data.sql"
>     />

Connects to the database given in url as the sa user using the org.database.jdbcDriver and executes the SQL statements contained within the file data.sql

>     <sql
>         driver="org.database.jdbcDriver"
>         url="jdbc:database-url"
>         userid="sa"
>         password="pass"
>         >
>     insert
>     into table some_table
>     values(1,2,3,4);

>     truncate table some_other_table;
>     </sql>

Connects to the database given in url as the sa user using the org.database.jdbcDriver and executes the two SQL statements inserting data into some_table and truncating some_other_table. Ant Properties in the nested text will not be expanded.

Note that you may want to enclose your statements in `<![CDATA[` ... `]]>` sections so you don't need to escape `<`, `>` `&` or other special characters. For example:

>     <sql
>         driver="org.database.jdbcDriver"
>         url="jdbc:database-url"
>         userid="sa"
>         password="pass"
>         ><![CDATA[

>     update some_table set column1 = column1 + 1 where column2 < 42;

>     ]]></sql>

The following command turns property expansion in nested text on (it is off purely for backwards compatibility), then creates a new user in the HSQLDB database using Ant properties.

>     <sql
>         driver="org.hsqldb.jdbcDriver";
>         url="jdbc:hsqldb:file:${database.dir}"
>         userid="sa"
>         password=""
>         expandProperties="true"
>         >
>       <transaction>
>         CREATE USER ${newuser} PASSWORD ${newpassword}
>       </transaction>
>     </sql>

The following connects to the database given in url as the sa user using the org.database.jdbcDriver and executes the SQL statements contained within the files data1.sql, data2.sql and data3.sql and then executes the truncate operation on some_other_table.

>     <sql
>         driver="org.database.jdbcDriver"
>         url="jdbc:database-url"
>         userid="sa"
>         password="pass" >
>       <transaction  src="data1.sql"/>
>       <transaction  src="data2.sql"/>
>       <transaction  src="data3.sql"/>
>       <transaction>
>         truncate table some_other_table;
>       </transaction>
>     </sql>

The following example does the same as (and may execute additional SQL files if there are more files matching the pattern `data*.sql`) but doesn't guarantee that data1.sql will be run before `data2.sql`.

>     <sql
>         driver="org.database.jdbcDriver"
>         url="jdbc:database-url"
>         userid="sa"
>         password="pass">
>       <path>
>         <fileset dir=".">
>           <include name="data*.sql"/>
>         </fileset>
>       <path>
>       <transaction>
>         truncate table some_other_table;
>       </transaction>
>     </sql>

The following connects to the database given in url as the sa user using the org.database.jdbcDriver and executes the SQL statements contained within the file data.sql, with output piped to outputfile.txt, searching /some/jdbc.jar as well as the system classpath for the driver class.

>     <sql
>         driver="org.database.jdbcDriver"
>         url="jdbc:database-url"
>         userid="sa"
>         password="pass"
>         src="data.sql"
>         print="yes"
>         output="outputfile.txt"
>         >
>     <classpath>
>     	<pathelement location="/some/jdbc.jar"/>
>     </classpath>
>     </sql>

The following will only execute if the RDBMS is "oracle" and the version starts with "8.1."

>     <sql
>         driver="org.database.jdbcDriver"
>         url="jdbc:database-url"
>         userid="sa"
>         password="pass"
>         src="data.sql"
>         rdbms="oracle"
>         version="8.1."
>         >
>     insert
>     into table some_table
>     values(1,2,3,4);

>     truncate table some_other_table;
>     </sql>