是否可以在 biblatex 中合并两种 citestyle？

Question

这种引用格式看起来有点多余。简单的作者年份格式可能同样有用，不需要额外的标签。

无论如何，以下是您可以如何实现它。由于所需的输出与style=alphabetic,通常生成的输出非常不同，我们需要重写一些 bibmacros。下面我选择了新名称并将它们映射到\autocite（如我在问题下的评论中所建议的那样），但如果您愿意，也可以重新使用 cite。

\documentclass[ngerman]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[backend=biber,
  style=alphabetic,
]{biblatex}

\DefineBibliographyStrings{german}{
  andothers = {et\addabbrvspace al\adddot},
}

\DeclareDelimFormat[doublecite]{nameyeardelim}{\addcomma\space}

\renewbibmacro*{date}{%
  \ifboolexpr{    test {\iffieldundef{year}}
              and test {\iffieldundef{endyear}}}
    {\bibstring{nodate}}
    {\printdate}}

\newbibmacro*{doublecite}{%
  \printtext[bibhyperref]{%
    \printnames{labelname}%
    \setunit{\printdelim{nameyeardelim}}%
    \usebibmacro{date}%
    \setunit{\addcomma\space}%
    \printtext[labelalphawidth]{%
      \printfield{labelprefix}%
      \printfield{labelalpha}%
      \printfield{extraalpha}%
      \ifbool{bbx:subentry}
        {\printfield{entrysetcount}}
        {}}}}

\DeclareCiteCommand{\doublecite}[\iffootnote\mkbibbrackets\mkbibfootnote]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{doublecite}}
  {\multicitedelim}
  {\usebibmacro{postnote}}

\DeclareMultiCiteCommand{\doublecites}[\iffootnote\mkbibbrackets\mkbibfootnote]
  {\doublecite}{\multicitedelim}

\DeclareAutoCiteCommand{doublecite}{\doublecite}{\doublecites}
\ExecuteBibliographyOptions{autocite=doublecite,}


\setcounter{biburllcpenalty}{9000}
\setcounter{biburlucpenalty}{9000}

\setlength{\bibparsep}{\parskip}

\begin{filecontents}{\jobname.bib}
@online{oraclevarianten,
  author  = {Oracle},
  title   = {Oracle Database Editions},
  url     = {https://docs.oracle.com/cd/B28359_01/license.111/b28287/editions.htm#DBLIC109},
  urldate = {2020-07-30},
}
\end{filecontents}
\addbibresource{\jobname.bib}
\addbibresource{biblatex-examples.bib}


\begin{document}
Lorem \autocite[Vgl.][380]{sigfridsson}
ipsum \autocite{oraclevarianten}
\printbibliography
\end{document}

编辑回应评论。

当您重新排列 bibmacro 时，您还需要考虑这些\setunit行。

如果您希望在引文和参考书目中使用不同的日期格式， labeldate这又派上用场了。（直到https://github.com/plk/biblatex/issues/863无论如何都已解决。）

“o.”和“D.”之间已经有一个空格，但是它是一个小空格（\,），您可以重新定义字符串以获得更大的正常空格。

\documentclass[ngerman]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{babel}
\usepackage{csquotes}

\usepackage[backend=biber,
  style=alphabetic,
  labeldateparts,
]{biblatex}

\DefineBibliographyStrings{german}{
  andothers = {et\addabbrvspace al\adddot},
  nodate    = {{}o.\adddotspace D\adddot},
}

\DeclareDelimFormat[doublecite]{nameyeardelim}{\addcomma\space}

\DeclareLabeldate{%
  \field{date}
  \field{year}
  \literal{nodate}
}

\renewbibmacro*{date}{%
  \ifboolexpr{    test {\iffieldundef{year}}
              and test {\iffieldundef{endyear}}}
    {\bibstring{nodate}}
    {\printdate}}

\newbibmacro*{doublecite}{%
  \printtext[bibhyperref]{%
    \printnames{labelname}%
    \setunit{\addcomma\space}%
    \printtext[labelalphawidth]{%
      \printfield{labelprefix}%
      \printfield{labelalpha}%
      \printfield{extraalpha}%
      \ifbool{bbx:subentry}
        {\printfield{entrysetcount}}
        {}}%
    \setunit{\addcomma\space}%
    \printlabeldate}}

\DeclareCiteCommand{\doublecite}[\iffootnote\mkbibbrackets\mkbibfootnote]
  {\usebibmacro{prenote}}
  {\usebibmacro{citeindex}%
   \usebibmacro{doublecite}}
  {\multicitedelim}
  {\usebibmacro{postnote}}

\DeclareMultiCiteCommand{\doublecites}[\iffootnote\mkbibbrackets\mkbibfootnote]
  {\doublecite}{\multicitedelim}

\DeclareAutoCiteCommand{doublecite}{\doublecite}{\doublecites}
\ExecuteBibliographyOptions{autocite=doublecite,}


\setcounter{biburllcpenalty}{9000}
\setcounter{biburlucpenalty}{9000}

\setlength{\bibparsep}{\parskip}

\begin{filecontents}{\jobname.bib}
@online{oraclevarianten,
  author  = {Oracle},
  title   = {Oracle Database Editions},
  url     = {https://docs.oracle.com/cd/B28359_01/license.111/b28287/editions.htm#DBLIC109},
  urldate = {2020-07-30},
}
\end{filecontents}
\addbibresource{\jobname.bib}
\addbibresource{biblatex-examples.bib}


\begin{document}
Lorem \autocite[Vgl.][380]{sigfridsson}
ipsum \autocite{oraclevarianten}
\printbibliography
\end{document}

Answer 1