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Java - Code Samples

 Sample 1. Code Sample / Example / Snippet of org.apache.calcite.sql2rel.RelFieldTrimmer

    public void assertConvertsTo(

String sql,

String plan,

boolean trim) {

String sql2 = getDiffRepos().expand("sql", sql);

RelNode rel = convertSqlToRel(sql2).project();



assertTrue(rel != null);

assertValid(rel);



if (trim) {

final RelBuilder relBuilder =

RelFactories.LOGICAL_BUILDER.create(rel.getCluster(), null);

final RelFieldTrimmer trimmer = createFieldTrimmer(relBuilder);

rel = trimmer.trim(rel);

assertTrue(rel != null);

assertValid(rel);

}



String actual = NL + RelOptUtil.toString(rel);

diffRepos.assertEquals("plan", plan, actual);

}


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