# Vim documentation: ft_sql

main help file

    *ft_sql.txt*	For Vim version 9.2.  Last change: 2026 Feb 14

    by David Fishburn

    This is a filetype plugin to work with SQL files.

    The Structured Query Language (SQL) is a standard which specifies statements
    that allow a user to interact with a relational database.  Vim includes
    features for navigation, indentation and syntax highlighting.

    1. Navigation					|sql-navigation|
        1.1 Matchit					|sql-matchit|
        1.2 Text Object Motions			|sql-object-motions|
        1.3 Predefined Object Motions		|sql-predefined-objects|
        1.4 Macros					|sql-macros|
    2. SQL Dialects					|sql-dialects|
        2.1 SQLSetType				|SQLSetType|
        2.2 SQLGetType				|SQLGetType|
        2.3 SQL Dialect Default			|sql-type-default|
    3. Adding new SQL Dialects			|sql-adding-dialects|
    4. OMNI SQL Completion				|sql-completion|
        4.1 Static mode				|sql-completion-static|
        4.2 Dynamic mode				|sql-completion-dynamic|
        4.3 Tutorial				|sql-completion-tutorial|
    	4.3.1 Complete Tables			|sql-completion-tables|
    	4.3.2 Complete Columns			|sql-completion-columns|
    	4.3.3 Complete Procedures		|sql-completion-procedures|
    	4.3.4 Complete Views			|sql-completion-views|
        4.4 Completion Customization		|sql-completion-customization|
        4.5 SQL Maps				|sql-completion-maps|
        4.6 Using with other filetypes		|sql-completion-filetypes|

    ==============================================================================

    1. Navigation					*sql-navigation*

    The SQL ftplugin provides a number of options to assist with file
    navigation.

    1.1 Matchit					*sql-matchit*
     The matchit plugin	http://www.vim.org/scripts/script.php?script_id=39
    provides many additional features and can be customized for different
    languages.  The matchit plugin is configured by defining a local
    buffer variable, b:match_words.  Pressing the % key while on various
    keywords will move the cursor to its match.  For example, if the cursor
    is on an "if", pressing % will cycle between the "else", "elseif" and
    "end if" keywords.

    The following keywords are supported:
        if
        elseif | elsif
        else [if]
        end if

        [while condition] loop
    	leave
    	break
    	continue
    	exit
        end loop

        for
    	leave
    	break
    	continue
    	exit
        end loop

        do
    	statements
        doend

        case
        when
        when
        default
        end case

        merge
        when not matched
        when matched

        create[ or replace] procedure|function|event
        returns

    1.2 Text Object Motions				*sql-object-motions*
    Vim has a number of predefined keys for working with text |object-motions|.
    This filetype plugin attempts to translate these keys to maps which make sense
    for the SQL language.

    The following |Normal| mode and |Visual| mode maps exist (when you edit a SQL
    file):
        ]]		    move forward to the next 'begin'
        [[		    move backwards to the previous 'begin'
        ][		    move forward to the next 'end'
        []		    move backwards to the previous 'end'

    1.3 Predefined Object Motions			*sql-predefined-objects*
    Most relational databases support various standard features, tables, indices,
    triggers and stored procedures.  Each vendor also has a variety of proprietary
    objects.  The next set of maps have been created to help move between these
    objects.  Depends on which database vendor you are using, the list of objects
    must be configurable.  The filetype plugin attempts to define many of the
    standard objects, plus many additional ones.  In order to make this as
    flexible as possible, you can override the list of objects from within your
    |vimrc| with the following:
        let g:ftplugin_sql_objects = 'function,procedure,event,table,trigger' ..
    		\ ',schema,service,publication,database,datatype,domain' ..
    		\ ',index,subscription,synchronization,view,variable'

    The following |Normal| mode and |Visual| mode maps have been created which use
    the above list:
        ]}		    move forward to the next 'create <object name>'
        [{		    move backward to the previous 'create <object name>'

    Repeatedly pressing ]} will cycle through each of these create statements:
        create table t1 (
    	...
        );

        create procedure p1
        begin
    	...
        end;

        create index i1 on t1 (c1);

    The default setting for g:ftplugin_sql_objects is:
        let g:ftplugin_sql_objects = 'function,procedure,event,' ..
    		\ '\\(existing\\\\|global\\s\\+temporary\\s\\+\\)\\\{,1}' ..
    		\ 'table,trigger' ..
    		\ ',schema,service,publication,database,datatype,domain' ..
    		\ ',index,subscription,synchronization,view,variable'

    The above will also handle these cases:
        create table t1 (
    	...
        );
        create existing table t2 (
    	...
        );
        create global temporary table t3 (
    	...
        );

    By default, the ftplugin only searches for CREATE statements.  You can also
    override this via your |vimrc| with the following:
        let g:ftplugin_sql_statements = 'create,alter'

    The filetype plugin defines three types of comments:
        1.  --
        2.  //
        3.  /*
    	 *
    	 */

    The following |Normal| mode and |Visual| mode maps have been created to work
    with comments:
        ]"		    move forward to the beginning of a comment
        ["		    move forward to the end of a comment

    1.4 Macros					   *sql-macros*
    Vim's feature to find macro definitions, 'define', is supported using this
    regular expression:
        \c\<\(VARIABLE\|DECLARE\|IN\|OUT\|INOUT\)\>

    This addresses the following code:
        CREATE VARIABLE myVar1 INTEGER;

        CREATE PROCEDURE sp_test(
    	IN myVar2 INTEGER,
    	OUT myVar3 CHAR(30),
    	INOUT myVar4 NUMERIC(20,0)
        )
        BEGIN
    	DECLARE myVar5 INTEGER;

    	SELECT c1, c2, c3
    	  INTO myVar2, myVar3, myVar4
    	  FROM T1
    	 WHERE c4 = myVar1;
        END;

    Place your cursor on "myVar1" on this line:
    	 WHERE c4 = myVar1;
    		     ^

    Press any of the following keys:
        [d
        [D
        [CTRL-D

    ==============================================================================

    2. SQL Dialects					*sql-dialects* *sql-types*

    						*sybase* *TSQL* *Transact-SQL*

    						*sqlanywhere*

    						*oracle* *plsql* *sqlj*

    						*sqlserver*

    						*mysql* *postgresql* *psql*

    						*informix*

    All relational databases support SQL.  There is a portion of SQL that is
    portable across vendors (ex. CREATE TABLE, CREATE INDEX), but there is a
    great deal of vendor specific extensions to SQL.  Oracle supports the
    "CREATE OR REPLACE" syntax, column defaults specified in the CREATE TABLE
    statement and the procedural language (for stored procedures and triggers).

    The default Vim distribution ships with syntax highlighting based on Oracle's
    PL/SQL.  The default SQL indent script works for Oracle and SQL Anywhere.
    The default filetype plugin works for all vendors and should remain vendor
    neutral, but extendable.

    Vim currently has support for a variety of different vendors, currently this
    is via syntax scripts. Unfortunately, to flip between different syntax rules
    you must either create:
        1.  New filetypes
        2.  Custom autocmds
        3.  Manual steps / commands

    The majority of people work with only one vendor's database product, it would
    be nice to specify a default in your |vimrc|.

    2.1 SQLSetType					*sqlsettype* *SQLSetType*
    For the people that work with many different databases, it is nice to be
    able to flip between the various vendors rules (indent, syntax) on a per
    buffer basis, at any time.  The ftplugin/sql.vim file defines this function:
        SQLSetType

    Executing this function without any parameters will set the indent and syntax
    scripts back to their defaults, see |sql-type-default|.  If you have turned
    off Vi's compatibility mode, 'compatible', you can use the <Tab> key to
    complete the optional parameter.

    After typing the function name and a space, you can use the completion to
    supply a parameter.  The function takes the name of the Vim script you want to
    source.  Using the |cmdline-completion| feature, the SQLSetType function will
    search the 'runtimepath' for all Vim scripts with a name containing 'sql'.
    This takes the guess work out of the spelling of the names.  The following are
    examples:
        :SQLSetType
        :SQLSetType sqloracle
        :SQLSetType sqlanywhere
        :SQLSetType sqlinformix
        :SQLSetType mysql

    The easiest approach is to the use <Tab> character which will first complete
    the command name (SQLSetType), after a space and another <Tab>, display a list
    of available Vim script names:
        :SQL<Tab><space><Tab>

    2.2 SQLGetType					*sqlgettype* *SQLGetType*
    At anytime you can determine which SQL dialect you are using by calling the
    SQLGetType command.  The ftplugin/sql.vim file defines this function:
        SQLGetType

    This will echo:
        Current SQL dialect in use:sqlanywhere

    2.3 SQL Dialect Default				*sql-type-default*
    As mentioned earlier, the default syntax rules for Vim is based on Oracle
    (PL/SQL).  You can override this default by placing one of the following in
    your YXXYvimrc|:
        let g:sql_type_default = 'sqlanywhere'
        let g:sql_type_default = 'sqlinformix'
        let g:sql_type_default = 'mysql'

    If you added the following to your YXXYvimrc|:
        let g:sql_type_default = 'sqlinformix'

    The next time edit a SQL file the following scripts will be automatically
    loaded by Vim:
        ftplugin/sql.vim
        syntax/sqlinformix.vim
        indent/sql.vim

    Notice indent/sqlinformix.sql was not loaded.  There is no indent file
    for Informix, Vim loads the default files if the specified files does not
    exist.

    ==============================================================================

    3. Adding new SQL Dialects			*sql-adding-dialects*

    If you begin working with a SQL dialect which does not have any customizations
     available with the default Vim distribution you can check	http://www.vim.org
    to see if any customization currently exist.  If not, you can begin by cloning
    an existing script.  Read |filetype-plugins| for more details.

    To help identify these scripts, try to create the files with a "sql" prefix.
    If you decide you wish to create customizations for the SQLite database, you
    can create any of the following:
        Unix
    	~/.vim/syntax/sqlite.vim
    	~/.vim/indent/sqlite.vim
        Windows
    	$VIM/vimfiles/syntax/sqlite.vim
    	$VIM/vimfiles/indent/sqlite.vim

    No changes are necessary to the SQLSetType function.  It will automatically
    pick up the new SQL files and load them when you issue the SQLSetType command.

    ==============================================================================

    4. OMNI SQL Completion				*sql-completion*

    						*omni-sql-completion*

    Vim 7 includes a code completion interface and functions which allows plugin
    developers to build in code completion for any language.  Vim 7 includes
    code completion for the SQL language.

    There are two modes to the SQL completion plugin, static and dynamic.  The
    static mode populates the popups with the data generated from current syntax
    highlight rules.  The dynamic mode populates the popups with data retrieved
    directly from a database.  This includes, table lists, column lists,
    procedures names and more.

    4.1 Static Mode					*sql-completion-static*
    The static popups created contain items defined by the active syntax rules
    while editing a file with a filetype of SQL.  The plugin defines (by default)
    various maps to help the user refine the list of items to be displayed.
    The defaults static maps are:
        imap <buffer> <C-C>a <C-\><C-O>:call sqlcomplete#Map('syntax')<CR><C-X><C-O>
        imap <buffer> <C-C>k <C-\><C-O>:call sqlcomplete#Map('sqlKeyword')<CR><C-X><C-O>
        imap <buffer> <C-C>f <C-\><C-O>:call sqlcomplete#Map('sqlFunction')<CR><C-X><C-O>
        imap <buffer> <C-C>o <C-\><C-O>:call sqlcomplete#Map('sqlOption')<CR><C-X><C-O>
        imap <buffer> <C-C>T <C-\><C-O>:call sqlcomplete#Map('sqlType')<CR><C-X><C-O>
        imap <buffer> <C-C>s <C-\><C-O>:call sqlcomplete#Map('sqlStatement')<CR><C-X><C-O>

    The use of "<C-C>" can be user chosen by using the following in your |.vimrc|
    as it may not work properly on all platforms:
        let g:ftplugin_sql_omni_key = '<C-C>'

    The static maps (which are based on the syntax highlight groups) follow this
    format:
        imap <buffer> <C-C>k <C-\><C-O>:call sqlcomplete#Map('sqlKeyword')<CR><C-X><C-O>
        imap <buffer> <C-C>k <C-\><C-O>:call sqlcomplete#Map('sqlKeyword\w*')<CR><C-X><C-O>

    This command breaks down as:
        imap		   - Create an insert map
        <buffer>		   - Only for this buffer
        <C-C>k		   - Your choice of key map
        <C-\><C-O>		   - Execute one command, return to Insert mode
        :call sqlcomplete#Map( - Allows the SQL completion plugin to perform some
    			     housekeeping functions to allow it to be used in
    			     conjunction with other completion plugins.
    			     Indicate which item you want the SQL completion
    			     plugin to complete.
    			     In this case we are asking the plugin to display
    			     items from the syntax highlight group
    			     'sqlKeyword'.
    			     You can view a list of highlight group names to
    			     choose from by executing the
    				 :syntax list
    			     command while editing a SQL file.
        'sqlKeyword'	   - Display the items for the sqlKeyword highlight
    			     group
        'sqlKeyword\w*'	   - A second option available with Vim 7.4 which
    			     uses a regular expression to determine which
    			     syntax groups to use
        )<CR>		   - Execute the :let command
        <C-X><C-O>		   - Trigger the standard omni completion key stroke.
    			     Passing in 'sqlKeyword' instructs the SQL
    			     completion plugin to populate the popup with
    			     items from the sqlKeyword highlight group.  The
    			     plugin will also cache this result until Vim is
    			     restarted.  The syntax list is retrieved using
    			     the syntaxcomplete plugin.

    Using the 'syntax' keyword is a special case.  This instructs the
    syntaxcomplete plugin to retrieve all syntax items.  So this will effectively
    work for any of Vim's SQL syntax files.  At the time of writing this includes
    10 different syntax files for the different dialects of SQL (see section 3
    above, |sql-dialects|).

    Here are some examples of the entries which are pulled from the syntax files:
         All
    	 - Contains the contents of all syntax highlight groups
         Statements
    	 - Select, Insert, Update, Delete, Create, Alter, ...
         Functions
    	 - Min, Max, Trim, Round, Date, ...
         Keywords
    	 - Index, Database, Having, Group, With
         Options
    	 - Isolation_level, On_error, Qualify_owners, Fire_triggers, ...
         Types
    	 - Integer, Char, Varchar, Date, DateTime, Timestamp, ...

    4.2 Dynamic Mode				*sql-completion-dynamic*
    Dynamic mode populates the popups with data directly from a database.  In
    order for the dynamic feature to be enabled you must have the dbext.vim
    plugin installed, (https://www.vim.org/scripts/script.php?script_id=356).

    Dynamic mode is used by several features of the SQL completion plugin.
    After installing the dbext plugin see the dbext-tutorial for additional
    configuration and usage.  The dbext plugin allows the SQL completion plugin
    to display a list of tables, procedures, views and columns.
         Table List
    	 - All tables for all schema owners
         Procedure List
    	 - All stored procedures for all schema owners
         View List
    	 - All stored procedures for all schema owners
         Column List
    	 - For the selected table, the columns that are part of the table

    To enable the popup, while in INSERT mode, use the following key combinations
    for each group (where <C-C> means hold the CTRL key down while pressing
    the space bar):
         Table List		   - <C-C>t
    			   - <C-X><C-O> (the default map assumes tables)
         Stored Procedure List - <C-C>p
         View List		   - <C-C>v
         Column List	   - <C-C>c

         Drilling In / Out     - When viewing a popup window displaying the list
    			     of tables, you can press <Right>, this will
    			     replace the table currently highlighted with
    			     the column list for that table.
    			   - When viewing a popup window displaying the list
    			     of columns, you can press <Left>, this will
    			     replace the column list with the list of tables.
    			   - This allows you to quickly drill down into a
    			     table to view its columns and back again.
    			   - <Right> and <Left> can also be chosen via
    			     your |.vimrc|
                                    let g:ftplugin_sql_omni_key_right = '<Right>'
                                    let g:ftplugin_sql_omni_key_left  = '<Left>'

    The SQL completion plugin caches various lists that are displayed in
    the popup window.  This makes the re-displaying of these lists very
    fast.  If new tables or columns are added to the database it may become
    necessary to clear the plugins cache.  The default map for this is:
        imap <buffer> <C-C>R <C-\><C-O>:call sqlcomplete#Map('ResetCache')<CR><C-X><C-O>

    4.3 SQL Tutorial				*sql-completion-tutorial*

    This tutorial is designed to take you through the common features of the SQL
    completion plugin so that:
         a) You gain familiarity with the plugin
         b) You are introduced to some of the more common features
         c) Show how to customize it to your preferences
         d) Demonstrate "Best of Use" of the plugin (easiest way to configure).

    First, create a new buffer:
         :e tutorial.sql

    Static features
    To take you through the various lists, simply enter insert mode, hit:
        <C-C>s   (show SQL statements)
    At this point, you can page down through the list until you find "select".
    If you are familiar with the item you are looking for, for example you know
    the statement begins with the letter "s".  You can type ahead (without the
    quotes) "se" then press:
        <C-Space>t
    Assuming "select" is highlighted in the popup list press <Enter> to choose
    the entry.  Now type:
        * fr<C-C>a (show all syntax items)
    choose "from" from the popup list.

    When writing stored procedures using the "type" list is useful.  It contains
    a list of all the database supported types.  This may or may not be true
    depending on the syntax file you are using.  The SQL Anywhere syntax file
    (sqlanywhere.vim) has support for this:
         BEGIN
    	DECLARE customer_id <C-C>T <-- Choose a type from the list

    Dynamic features
    To take advantage of the dynamic features you must first install the
    dbext.vim plugin (https://www.vim.org/scripts/script.php?script_id=356).  It
    also comes with a tutorial.  From the SQL completion plugin's perspective,
    the main feature dbext provides is a connection to a database.  dbext
    connection profiles are the most efficient mechanism to define connection
    information.  Once connections have been setup, the SQL completion plugin
    uses the features of dbext in the background to populate the popups.

    What follows assumes dbext.vim has been correctly configured, a simple test
    is to run the command, :DBListTable.  If a list of tables is shown, you know
    dbext.vim is working as expected.  If not, please consult the dbext.txt
    documentation.

    Assuming you have followed the dbext-tutorial you can press <C-C>t to
    display a list of tables.  There is a delay while dbext is creating the table
    list.  After the list is displayed press <C-W>.  This will remove both the
    popup window and the table name already chosen when the list became active.

     4.3.1 Table Completion:			*sql-completion-tables*

    Press <C-C>t to display a list of tables from within the database you
    have connected via the dbext plugin.
    NOTE: All of the SQL completion popups support typing a prefix before pressing
    the key map.  This will limit the contents of the popup window to just items
    beginning with those characters.

     4.3.2 Column Completion:			*sql-completion-columns*

    The SQL completion plugin can also display a list of columns for particular
    tables.  The column completion is triggered via <C-C>c.

    NOTE: The following example uses <Right> to trigger a column list while
          the popup window is active.

    Example of using column completion:
         - Press <C-C>t again to display the list of tables.
         - When the list is displayed in the completion window, press <Right>,
           this will replace the list of tables, with a list of columns for the
           table highlighted (after the same short delay).
         - If you press <Left>, this will again replace the column list with the
           list of tables.  This allows you to drill into tables and column lists
           very quickly.
         - Press <Right> again while the same table is highlighted.  You will
           notice there is no delay since the column list has been cached.  If you
           change the schema of a cached table you can press <C-C>R, which
           clears the SQL completion cache.
         - NOTE: <Right> and <Left> have been designed to work while the
           completion window is active.  If the completion popup window is
           not active, a normal <Right> or <Left> will be executed.

    Let's look at how we can build a SQL statement dynamically.  A select statement
    requires a list of columns.  There are two ways to build a column list using
    the SQL completion plugin.
        One column at a time:
            1. After typing SELECT press <C-C>t to display a list of tables.
    	2. Choose a table from the list.
    	3. Press <Right> to display a list of columns.
    	4. Choose the column from the list and press enter.
    	5. Enter a "," and press <C-C>c.  Generating a column list
    	   generally requires having the cursor on a table name.  The plugin
    	   uses this name to determine what table to retrieve the column list.
    	   In this step, since we are pressing <C-C>c without the cursor
    	   on a table name the column list displayed will be for the previous
    	   table.  Choose a different column and move on.
    	6. Repeat step 5 as often as necessary.
        All columns for a table:
     	1. After typing SELECT press <C-C>t to display a list of tables.
    	2. Highlight the table you need the column list for.
    	3. Press <Enter> to choose the table from the list.
    	4. Press <C-C>l to request a comma-separated list of all columns
    	   for this table.
    	5. Based on the table name chosen in step 3, the plugin attempts to
    	   decide on a reasonable table alias.	You are then prompted to
    	   either accept of change the alias.  Press OK.
    	6. The table name is replaced with the column list of the table is
    	   replaced with the comma separate list of columns with the alias
    	   prepended to each of the columns.
    	7. Step 3 and 4 can be replaced by pressing <C-C>L, which has
    	   a <C-Y> embedded in the map to choose the currently highlighted
    	   table in the list.

    There is a special provision when writing select statements.  Consider the
    following statement:
         select *
           from customer c,
    	    contact cn,
    	    department as dp,
    	    employee e,
    	    site_options so
          where c.

    In INSERT mode after typing the final "c." which is an alias for the
    "customer" table, you can press either <C-C>c or <C-X><C-O>.  This will
    popup a list of columns for the customer table.  It does this by looking back
    to the beginning of the select statement and finding a list of the tables
    specified in the FROM clause.  In this case it notes that in the string
    "customer c", "c" is an alias for the customer table.  The optional "AS"
    keyword is also supported, "customer AS c".

     4.3.3 Procedure Completion:			*sql-completion-procedures*

    Similar to the table list, <C-C>p, will display a list of stored
    procedures stored within the database.

     4.3.4 View Completion:				*sql-completion-views*

    Similar to the table list, <C-C>v, will display a list of views in the
    database.

    4.4 Completion Customization			*sql-completion-customization*

    The SQL completion plugin can be customized through various options set in
    your YXXYvimrc|:
        omni_sql_no_default_maps
            - Default: This variable is not defined
    	- If this variable is defined, no maps are created for OMNI
    	  completion.  See |sql-completion-maps| for further discussion.

        omni_sql_use_tbl_alias
     	- Default: a
    	- This setting is only used when generating a comma-separated
    	  column list.	By default the map is <C-C>l.  When generating
    	  a column list, an alias can be prepended to the beginning of each
    	  column, for example:	e.emp_id, e.emp_name.  This option has three
    	  settings:
    		n - do not use an alias
    		d - use the default (calculated) alias
    		a - ask to confirm the alias name

    	  An alias is determined following a few rules:
    	       1.  If the table name has an '_', then use it as a separator:
    		   MY_TABLE_NAME --> MTN
    		   my_table_name --> mtn
    		   My_table_NAME --> MtN
     	       2.  If the table name does NOT contain an '_', but DOES use
    		   mixed case then the case is used as a separator:
    		   MyTableName --> MTN
     	       3.  If the table name does NOT contain an '_', and does NOT
    		   use mixed case then the first letter of the table is used:
    		   mytablename --> m
    		   MYTABLENAME --> M

        omni_sql_ignorecase
     	- Default: Current setting for 'ignorecase'
    	- Valid settings are 0 or 1.
    	- When entering a few letters before initiating completion, the list
    	  will be filtered to display only the entries which begin with the
    	  list of characters.  When this option is set to 0, the list will be
    	  filtered using case sensitivity.

        omni_sql_include_owner
     	- Default: 0, unless dbext.vim 3.00 has been installed
    	- Valid settings are 0 or 1.
    	- When completing tables, procedure or views and using dbext.vim 3.00
    	  or higher the list of objects will also include the owner name.
    	  When completing these objects and omni_sql_include_owner is enabled
    	  the owner name will be replaced.

        omni_sql_precache_syntax_groups
     	- Default:
    	  ['syntax','sqlKeyword','sqlFunction','sqlOption','sqlType','sqlStatement']
    	- sqlcomplete can be used in conjunction with other completion
    	  plugins.  This is outlined at |sql-completion-filetypes|.  When the
    	  filetype is changed temporarily to SQL, the sqlcompletion plugin
    	  will cache the syntax groups listed in the List specified in this
    	  option.

    4.5 SQL Maps					*sql-completion-maps*

    The default SQL maps have been described in other sections of this document in
    greater detail.  Here is a list of the maps with a brief description of each.

    Static Maps
    These are maps which use populate the completion list using Vim's syntax
    highlighting rules.
        <C-C>a
            - Displays all SQL syntax items.
        <C-C>k
            - Displays all SQL syntax items defined as 'sqlKeyword'.
        <C-C>f
            - Displays all SQL syntax items defined as 'sqlFunction.
        <C-C>o
            - Displays all SQL syntax items defined as 'sqlOption'.
        <C-C>T
            - Displays all SQL syntax items defined as 'sqlType'.
        <C-C>s
            - Displays all SQL syntax items defined as 'sqlStatement'.

    Dynamic Maps
    These are maps which use populate the completion list using the dbext.vim
    plugin.
        <C-C>t
            - Displays a list of tables.
        <C-C>p
            - Displays a list of procedures.
        <C-C>v
            - Displays a list of views.
        <C-C>c
            - Displays a list of columns for a specific table.
        <C-C>l
            - Displays a comma-separated list of columns for a specific table.
        <C-C>L
            - Displays a comma-separated list of columns for a specific table.
    	  This should only be used when the completion window is active.
        <Right>
     	- Displays a list of columns for the table currently highlighted in
    	  the completion window.  <Right> is not recognized on most Unix
    	  systems, so this maps is only created on the Windows platform.
    	  If you would like the same feature on Unix, choose a different key
    	  and make the same map in your vimrc.
        <Left>
     	- Displays the list of tables.
    	  <Left> is not recognized on most Unix systems, so this maps is
    	  only created on the Windows platform.  If you would like the same
    	  feature on Unix, choose a different key and make the same map in
    	  your vimrc.
        <C-C>R
     	- This maps removes all cached items and forces the SQL completion
    	  to regenerate the list of items.

    Customizing Maps
    You can create as many additional key maps as you like.  Generally, the maps
    will be specifying different syntax highlight groups.

    If you do not wish the default maps created or the key choices do not work on
    your platform (often a case on *nix) you define the following variable in
    your YXXYvimrc|:
        let g:omni_sql_no_default_maps = 1

    Do not edit ftplugin/sql.vim directly!  If you change this file your changes
    will be over written on future updates.  Vim has a special directory structure
    which allows you to make customizations without changing the files that are
    included with the Vim distribution.  If you wish to customize the maps
    create an after/ftplugin/sql.vim (see |after-directory|) and place the same
    maps from the ftplugin/sql.vim in it using your own key strokes.  <C-C> was
    chosen since it will work on both Windows and *nix platforms.  On the windows
    platform you can also use <C-Space> or ALT keys.

    4.6 Using with other filetypes			*sql-completion-filetypes*

    Many times SQL can be used with different filetypes.  For example Perl, Java,
    PHP, Javascript can all interact with a database.  Often you need both the SQL
    completion and the completion capabilities for the current language you are
    editing.

    This can be enabled easily with the following steps (assuming a Perl file):
        1.  :e test.pl
        2.  :set filetype=sql
        3.  :set ft=perl

    Step 1
    Begins by editing a Perl file.  Vim automatically sets the filetype to
    "perl".  By default, Vim runs the appropriate filetype file
    ftplugin/perl.vim.  If you are using the syntax completion plugin by following
    the directions at |ft-syntax-omni| then the 'omnifunc' option has been set to
    "syntax#Complete".  Pressing <C-X><C-O> will display the omni popup containing
    the syntax items for Perl.

    Step 2
    Manually setting the filetype to 'sql' will also fire the appropriate filetype
    files ftplugin/sql.vim.  This file will define a number of buffer specific
    maps for SQL completion, see |sql-completion-maps|.  Now these maps have
    been created and the SQL completion plugin has been initialized.  All SQL
    syntax items have been cached in preparation.  The SQL filetype script detects
    we are attempting to use two different completion plugins.  Since the SQL maps
    begin with <C-C>, the maps will toggle the 'omnifunc' when in use.  So you
    can use <C-X><C-O> to continue using the completion for Perl (using the syntax
    completion plugin) and <C-C> to use the SQL completion features.

    Step 3
    Setting the filetype back to Perl sets all the usual "perl" related items back
    as they were.

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