Function newTwoColumnRangeMeta

go/sql/builder.go:558–583

(uniqueKeyColumns *ColumnList)

}

func newTwoColumnRangeMeta(uniqueKeyColumns *ColumnList) twoColumnRangeMeta {
	colVals := buildColumnsPreparedValues(uniqueKeyColumns)
	cols := uniqueKeyColumns.Columns()
	col1Name := EscapeName(cols[0].Name)
	col2Name := EscapeName(cols[1].Name)
	col1Asc := fmt.Sprintf("%s asc", col1Name)
	col2Asc := fmt.Sprintf("%s asc", col2Name)
	col1Desc := fmt.Sprintf("%s desc", col1Name)
	col2Desc := fmt.Sprintf("%s desc", col2Name)
	if cols[0].Type == EnumColumnType {
		col1Asc = fmt.Sprintf("concat(%s) asc", col1Name)
		col1Desc = fmt.Sprintf("concat(%s) desc", col1Name)
	}
	if cols[1].Type == EnumColumnType {
		col2Asc = fmt.Sprintf("concat(%s) asc", col2Name)
		col2Desc = fmt.Sprintf("concat(%s) desc", col2Name)
	}
	return twoColumnRangeMeta{
		col1Name:    col1Name,
		col2Name:    col2Name,
		col1Val:     colVals[0],
		col2Val:     colVals[1],
		orderByAsc:  col1Asc + ", " + col2Asc,
		orderByDesc: col1Desc + ", " + col2Desc,
	}
}

func buildTwoColumnUnionParts(
	selectClause, fromClause string,