140 lines
5.4 KiB
Org Mode
140 lines
5.4 KiB
Org Mode
#+TITLE: SQL layer
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#+TAGS: dsl|layer|programming
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[[file:img/sql.png]]
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* Table of Contents :TOC_5_gh:noexport:
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- [[#description][Description]]
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- [[#features][Features:]]
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- [[#install][Install]]
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- [[#sql-keywords-capitalization][SQL Keywords Capitalization]]
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- [[#sql-interactive-mode][SQL Interactive Mode]]
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- [[#blacklisting-keywords][Blacklisting keywords]]
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- [[#auto-indent][Auto-Indent]]
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- [[#key-bindings][Key bindings]]
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- [[#highlighting][Highlighting]]
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- [[#inferior-process-interactions-sqli][Inferior Process Interactions (SQLi)]]
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- [[#send-sql-queries-to-sqli][Send SQL queries to SQLi:]]
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- [[#sqli-buffer][SQLi buffer]]
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- [[#code-formatting][Code Formatting]]
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* Description
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This layer adds support for a wide range of SQL dialects to Spacemacs.
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** Features:
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- Syntax highlighting for the following SQL dialects
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- ANSI
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- DB2
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- Informix
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- Ingres
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- Interbase
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- Linter
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- Microsoft
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- MySQL
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- Oracle
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- Postgres
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- Solid
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- SQLite
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- Sybase
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- Vertica
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- Syntax-checking via [[https://github.com/purcell/sqlint][sqlint]] for ANSI SQL.
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- Format code with =sqlfmt=
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- Snippet insertion for the more general SQL constructs.
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- REPL support via =SQLi= buffer.
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- Automatic capitalization of keywords.
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* Install
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To use this configuration layer, add it to your =~/.spacemacs=. You will need to
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add =sql= to the existing =dotspacemacs-configuration-layers= list in this
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file.
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For syntax-checking you also need to install [[https://www.ruby-lang.org/en/about/][ruby]] as well as =sqlint=.
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#+BEGIN_SRC ruby
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gem install sqlint
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#+END_SRC
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** SQL Keywords Capitalization
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SQL, by convention, uses upper-case keywords, although lower-case works just as
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well. As humans, the separation between upper-case and lower-case helps scan and
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parse the code much more quickly.
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To install [[https://github.com/Trevoke/sqlup-mode.el][sqlup-mode]] which enables auto capitalization in =sql mode= set the
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variable =sql-capitalize-keywords= to =t=.
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#+BEGIN_SRC emacs-lisp
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(setq-default dotspacemacs-configuration-layers '(
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(sql :variables sql-capitalize-keywords t)))
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#+END_SRC
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*** SQL Interactive Mode
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If you want capitalization only in =sql-mode= and not in =sql-interactive-mode=
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you can set the variable =sql-capitalize-keywords-disable-interactive= to =t=.
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*** Blacklisting keywords
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[[https://github.com/Trevoke/sqlup-mode.el][sqlup-mode]] can be configured to ignore certain keywords. For example if you use
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=name= as column name it would be annoying to have it upcased. You can prevent
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this behaviour by setting the variable =sql-capitalize-keywords-blacklist= to
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a list with keywords to ignore, e.g.
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#+BEGIN_SRC emacs-lisp
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(setq-default dotspacemacs-configuration-layers '(
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(sql :variables
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sql-capitalize-keywords t
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sql-capitalize-keywords-blacklist '("name" "varchar"))))
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#+END_SRC
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This layer is blacklisting =name= by default as it is a very common name for
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column and NAME is non-reserved SQL keyword.
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** Auto-Indent
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This mode use [[https://github.com/alex-hhh/emacs-sql-indent][sql-indent]] to indent the code. You can check the package’s README
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to adjust the rules. If that’s not what you want, you can also disable
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auto-indent by setting the variable =sql-auto-indent= to =nil=.
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#+BEGIN_SRC emacs-lisp
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(setq-default dotspacemacs-configuration-layers '(
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(sql :variables sql-auto-indent nil)))
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#+END_SRC
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* Key bindings
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** Highlighting
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| Key binding | Description |
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|-------------+-----------------------------------|
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| ~SPC m h k~ | select a SQL dialect to highlight |
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** Inferior Process Interactions (SQLi)
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| Key binding | Description |
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|-------------+-----------------------------|
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| ~SPC m b b~ | show the SQLi buffer name |
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| ~SPC m b s~ | set the SQLi buffer |
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| ~SPC m l a~ | List all objects |
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| ~SPC m l t~ | list all objects in a table |
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*** Send SQL queries to SQLi:
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| Key binding | Description |
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|-------------+---------------------------------------------------------------------------------------|
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| ~SPC m s b~ | Send the whole buffer to the SQLi buffer |
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| ~SPC m s B~ | Send the whole buffer to the SQLi buffer and switch to it in =insert state= |
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| ~SPC m s i~ | Start the SQLi process |
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| ~SPC m s f~ | Send the paragraph around point to the SQLi buffer |
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| ~SPC m s F~ | Send the paragraph around point to the SQLi buffer and switch to it in =insert state= |
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| ~SPC m s q~ | Prompt for a string to send to the SQLi buffer |
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| ~SPC m s Q~ | Prompt for a string to send to the SQLi buffer and switch to it in =insert state= |
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| ~SPC m s r~ | Send the selected region to the SQLi buffer |
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| ~SPC m s R~ | Send the selected region to the SQLi buffer and switch to it in =insert state= |
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** SQLi buffer
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| Key binding | Description |
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|-------------+--------------------------------------------------------------|
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| ~SPC m b r~ | rename buffer (follow up in the SQL buffer with ~SPC m b s~) |
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| ~SPC m b S~ | save the current connection |
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** Code Formatting
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| ~SPC m = c~ | capitalize SQL keywords in region (if capitalize is enabled) |
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