5

我经常在不同的主要模式下编写一些脚本来做一些事情，通常涉及 SQL。也许它看起来像这样：

sql = """
SELECT * FROM table WHERE row_awesomeness > 1000
"""

我希望能够正确缩进 SQL，所以它看起来像：

sql = """
SELECT *
  FROM table
 WHERE row_awesomeness > 1000
"""

我对使用的 SQL 缩进算法并不挑剔，但我根本什么都做不了。我不是 , 的忠实粉丝sql-indent.el，但我什至无法在新缓冲区中使用它（该函数sql-indent-buffer与我的第一个描述相比没有任何改变，我绝对希望SELECT,FROM和WHERE子句分开我认为很标准的线条）。

理想情况下，我会突出显示包含 SQL 的区域并执行类似的操作M-x sql-indent-region RET- 不需要在换行符上缩进的内容。

4

2 回答 2

2

这是一种方法（经过轻微测试，使用您提到的缩进函数——我不使用 SQL，但只要它在整个缓冲区上运行，您应该能够在其位置插入任何函数）：

(defun my-sql-indent-region (beg end)
  "Indent the SQL statement in the region."
  (interactive "*r")
  (save-excursion
    (save-restriction
      (narrow-to-region beg end)
      ;; http://www.emacswiki.org/emacs/download/sql-indent.el
      (sql-indent-buffer))))

如果我标记以下 sql 查询（从“SELECT”到“f2.PLAYERID”），嵌入到 elisp 字符串中，然后执行M-x my-sql-indent-region RET：

(defvar my-sql-query "
SELECT p1.PLAYERID, 
f1.PLAYERNAME, 
  p2.PLAYERID, 
f2.PLAYERNAME 
FROM PLAYER f1, 
                   PLAYER f2, 
    PLAYS p1 
    FULL OUTER JOIN PLAYS p2 
        ON p1.PLAYERID < p2.PLAYERID 
    AND p1.TEAMID = p2.TEAMID 
GROUP BY p1.PLAYERID, 
    f1.PLAYERID, 
   p2.PLAYERID, 
    f2.PLAYERID 
HAVING Count(p1.PLAYERID) = Count(*) 
  AND Count(p2.PLAYERID) = Count(*) 
    AND p1.PLAYERID = f1.PLAYERID 
AND p2.PLAYERID = f2.PLAYERID;
")

我最终得到：

(defvar my-sql-query "
SELECT p1.PLAYERID, 
    f1.PLAYERNAME, 
    p2.PLAYERID, 
    f2.PLAYERNAME 
FROM PLAYER f1, 
    PLAYER f2, 
    PLAYS p1 
    FULL OUTER JOIN PLAYS p2 
    ON p1.PLAYERID < p2.PLAYERID 
    AND p1.TEAMID = p2.TEAMID 
GROUP BY p1.PLAYERID, 
    f1.PLAYERID, 
    p2.PLAYERID, 
    f2.PLAYERID 
HAVING Count(p1.PLAYERID) = Count(*) 
    AND Count(p2.PLAYERID) = Count(*) 
    AND p1.PLAYERID = f1.PLAYERID 
    AND p2.PLAYERID = f2.PLAYERID;
")
于 2014-04-29T18:03:38.403 回答
0

我使用多模态。

(defun python/init-polymode ()
  (use-package polymode
    :ensure t
    :mode ("\.py$" . poly-python-sql-mode)
    :config
    (setq polymode-prefix-key (kbd "C-c n"))
    (define-hostmode poly-python-hostmode :mode 'python-mode)
    (add-hook 'python-mode-hook 'poly-python-sql-mode)
    (add-hook 'python-mode-hook 'define-python-keybindings))

  (define-innermode poly-sql-expr-python-innermode
    :mode 'sql-mode
    :head-matcher (rx "r" (= 3 (char "\"'")) (* (any space)))
    :tail-matcher (rx (= 3 (char "\"'")))
    :head-mode 'host
    :tail-mode 'host
    )

然后我定义了几个可以应用于当前块的函数。

(defun python-indent-sql-chunk ()
  (interactive)
  (let* ((chunk (pm-chunk-range))
         (beg (car chunk))
         (end (cdr chunk)))
    (sqlformat-region beg end)
    (indent-region-line-by-line beg end)
    (delete-trailing-whitespace beg end)
    (sqlup-capitalize-keywords-in-region beg end)))

为了让我每次按回车时都会发生这种情况：

defun sql-format-chunk ()
  (interactive)
  (newline-and-indent)
  (python-indent-sql-chunk)

(define-key sql-mode-map (kbd "RET") 'sql-format-chunk)
于 2021-02-04T08:13:15.370 回答