Method create

core/src/main/java/org/apache/calcite/rex/RexProgram.java:197–205

Creates a program which calculates projections and filters rows based upon a condition. Does not attempt to eliminate common sub-expressions. @param projectExprs Project expressions @param conditionExpr Condition on which to filter rows, or null if rows are not to be filtered

(
      RelDataType inputRowType,
      List<? extends RexNode> projectExprs,
      @Nullable RexNode conditionExpr,
      RelDataType outputRowType,
      RexBuilder rexBuilder)

   * @return A program
   */
  public static RexProgram create(
      RelDataType inputRowType,
      List<? extends RexNode> projectExprs,
      @Nullable RexNode conditionExpr,
      RelDataType outputRowType,
      RexBuilder rexBuilder) {
    return create(inputRowType, projectExprs, conditionExpr,
        outputRowType.getFieldNames(), rexBuilder);
  }

  /**
   * Creates a program which calculates projections and filters rows based