Big-Data-HPC-Platform/docs/ECLLanguageReference/ECLR_mods/Expr-SetOper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
<sect1 id="Set_Operators">
  <title>Set Operators</title>

  <para><emphasis>The following set operators<indexterm>
      <primary>Set Operators</primary>
    </indexterm> are supported, listed here in their evaluation
  precedence:</emphasis></para>

  <informaltable colsep="1" frame="all" rowsep="1">
    <tgroup align="left" cols="2">
      <colspec colwidth="94.80pt" />

      <colspec />

      <tbody>
        <row>
          <entry>+</entry>

          <entry>Append (all elements from both sets, without re-ordering or
          duplicate element removal)</entry>
        </row>
      </tbody>
    </tgroup>
  </informaltable>
</sect1>