@Override
    public long getSequenceValue(String sequenceName) {
        return getSQLHandler().getItemAsLong("select CURRENT_VALUE from "
          + "INFORMATION_SCHEMA.SEQUENCES where SEQUENCE_SCHEMA = '"
          + getSchemaName() + "' and SEQUENCE_NAME = '" + sequenceName + "'");
    }
Returns the value of the sequence with the given name.
<p/>
Note: this can have the side-effect of increasing the sequence value.

@param sequenceName The sequence, not null
@return The value of the sequence with the given name
spock-unitils/src/test/java/org/unitils/core/dbsupport/H2DbSupport.java