/sqlsheet

Automatically exported from code.google.com/p/sqlsheet

Primary LanguageJavaOtherNOASSERTION

SQL Sheet 7 Website drawing

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Summary

SQLSheet is a JDBC driver for Excel XLS/XLSX spreadsheets based Apache POI and JSQLParser with support for:

  • SELECT FROM statements
  • INSERT INTO statements
  • DELETE FROM statements
  • CREATE TABLE statements
  • DROP TABLE statements
  • Custom Sheet Headers
  • Streaming Mode of large data sets
  • Database and ResultSet MetaData
  • Formula Evaluation

A Catalog defines the folder of the *.xls(x) files and the Schema sets the filename of each *.xls(x) file. Every sheet represents a Table and its Fields are defined by the sheet columns.

The goal is to extract or insert data from and into the spreadsheets with SQL statements only. There is no DB Engine or support for any advanced SQL features beyond access of simple data frames. Although it would be very easy to transfer data to a Java In Memory Database like H2, HyperSQL or DuckDB for this purpose.

License

SQLSheet is licensed under the Apache License, Version 2.0 (the "License").

Maven Artifact:

<dependency>
    <groupId>com.google.code.sqlsheet</groupId>
    <artifactId>sqlsheet</artifactId>
    <version>[7.1,]</version>
</dependency>

Usage example:

Class.forName("com.googlecode.sqlsheet.Driver");

Connection writeConnection = DriverManager.getConnection("jdbc:xls:file:test.xlsx");

Statement writeStatement = writeConnection.createStatement();

writeStatement.executeUpdate("CREATE TABLE TEST_INSERT(COL1 INT, COL2 VARCHAR(255), COL3 DATE)");

PreparedStatement writeStatement2 =
writeConnection.prepareStatement("INSERT INTO TEST_INSERT(COL1, COL2, COL3) VALUES(?,?,?)");

for(int i = 0; i<3;i++){
  writeStatement2.setDouble(1, i);
  writeStatement2.setString(2, "Row" + i);
  writeStatement2.setDate(3, new java.sql.Date(new Date().getTime()));
  writeStatement2.execute();
}

writeStatement.close();
writeStatement2.close();
writeConnection.close();
<!DOCTYPE etl SYSTEM "http://scriptella.javaforge.com/dtd/etl.dtd">
<etl>

  <connection id="xls" url="jdbc:xls:file:extracttest.xls"/>
  <connection id="xlsx" url="jdbc:xls:file:extracttest.xlsx"/>
  <connection id="java" driver="janino"/>

  <script connection-id="xls">
    CREATE TABLE "2009"(
      COL1 INT,
      COL2 VARCHAR(255),
      COL3 DATE
    );
  </script>

  <script connection-id="xlsx">
    CREATE TABLE "2009"(
      COL1 INT,
      COL2 VARCHAR(255),
      COL3 DATE
    );
  </script>

  <query connection-id="java">
    set("COL1", 1);
    set("COL2", "Test");
    set("COL3", new java.util.Date());
    next();
    <script connection-id="xls">
      INSERT INTO "2009" (COL1, COL2, COL3) VALUES(?COL1, ?COL2, ?COL3);
    </script>
    <script connection-id="xlsx">
      INSERT INTO "2009" (COL1, COL2, COL3) VALUES(?COL1, ?COL2, ?COL3);
    </script>
  </query>

</etl>
<!DOCTYPE etl SYSTEM "http://scriptella.javaforge.com/dtd/etl.dtd">
<etl>

  <connection id="xls" url="jdbc:xls:file:extracttest.xls"/>
  <connection id="xlsx" url="jdbc:xls:file:extracttest.xlsx"/>
  <connection id="java" driver="janino"/>

  <query connection-id="xls">
    SELECT * FROM "2009";
    <script connection-id="java">
      System.out.println(((Double)get("COL1")).intValue());
      System.out.println((String)get("COL2"));
      System.out.println((java.util.Date) get("COL3"));
    </script>
  </query>

  <query connection-id="xlsx">
    SELECT * FROM "2009";
    <script connection-id="java">
      System.out.println(((Double)get("COL1")).intValue());
      System.out.println((String)get("COL2"));
      System.out.println((java.util.Date) get("COL3"));
    </script>
  </query>

</etl>

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