3.00.2.1

Improvements

• Added support for user login authentication to enhance security.

3.00.2.0

New Features

• Added support for method setQueryTimeout(int seconds) in JDBCStatement and JDBCPreparedStatement for setting SQL query timeout.

• Added reconnect parameter to JDBCConnection for automatic reconnection.

3.00.1.1

Improvements

• Job parallelism can be set on the server side using setMaxJobParallelism.

3.00.1.0

New Features

• For versions before 3.00.1.0, ResultSet may return a scalar/vector/matrix. Since version 3.00.1.0, these forms are converted and returned as tables.

  Note: This change may affect compatibility with existing code that expects scalar/vector/matri results.

• The getResult method of JDBCResultSet has been marked as deprecated.

• PreparedStatement aligns the handling logic of DECIMAL 32/64 data with DECIMAL128, which now supports string representation with setObject to ensure high-precision transmission.

• The getColumns method of DatabaseMetaData now supports retrieval of column information for all tables under a specified catalog.schema.

3.00.0.1

New Features

• Added support for methods on catalog operations such as supportsSchema and supportsCatalog.
• Added methods setFetchDirection and getFetchDirection for setting and getting the direction of fetching rows of ResultSet. Note that DolphinDB JDBC only supports ResultSet.FETCH_FORWARD.

Improvements

• Optimized the return value of getIdentifierQuoteString.
• Added support for querying fields containing special character $.
• Added support for calling data type conversion methods with brackets within the insert into statement.
• Added support for "NULL" or " " in the insert into statement when writing data to a DFS table.
• Methods executeQuery and executeUpdate of JDBCPreparedStatement class support statements without placeholders.
• Added support for calling loadTable in the update statement on DFS tables with class JDBCPreparedStatement or JDBCStatement.
• Optimized the logic of method clearParameter of the JDBCPreparedStatement class.

Issues Fixed

• Fixed an issue where connection was established in unauthenticated mode if the JDBC URL only specified user or password. An error is now reported.

1.30.22.5

1.30.22.5

New Features

• Added the following new methods to the JDBCDataBaseMetaData class:

  • setCatalog to set the database catalog name to select a subspace of the Connection object's database in which to work.
  • getCatalogs to get the database catalogs.
  • getTables to get information of specific tables.
  • getColumns to get information of specific columns.

• Added getBigDecimal method to the JDBCResult class to retrieve the value of specified column as BigDecimal type. It can be called in two ways:

  BigDecimal getBigDecimal(int columnIndex) throws SQLException;
  BigDecimal getBigDecimal(String columnLabel) throws SQLException;
  

• The commit() and rollback() methods of JDBCConnection class do not support transactions at user level and return null by default.

• Added method setMaxRows to the JDBCStatement class to set the upper limit for the number of records that a ResultSet object can contain.

• Added method getMaxRows to the JDBCStatement class to get the specified upper limit for the number of records applied to the ResultSet object.

• The insert into clause of JDBCPrepareStatement class now writes data in batches instead of by record.

• The insert into clause of JDBCPrepareStatement class now supports inserting data to specific columns, and null values are written to the rest columns.