sql-2003-2.bnf.html

sql 2003的 bnf范式

<p><a name="period"> &nbsp; </a>
<a href="#xref-period"> &lt;period&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; .

<p><a name="solidus"> &nbsp; </a>
<a href="#xref-solidus"> &lt;solidus&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; /

<p><a name="colon"> &nbsp; </a>
<a href="#xref-colon"> &lt;colon&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; :

<p><a name="semicolon"> &nbsp; </a>
<a href="#xref-semicolon"> &lt;semicolon&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; ;

<p><a name="less than operator"> &nbsp; </a>
<a href="#xref-less than operator"> &lt;less than operator&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; &lt;

<p><a name="equals operator"> &nbsp; </a>
<a href="#xref-equals operator"> &lt;equals operator&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; =

<p><a name="greater than operator"> &nbsp; </a>
<a href="#xref-greater than operator"> &lt;greater than operator&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; &gt;

<p><a name="question mark"> &nbsp; </a>
<a href="#xref-question mark"> &lt;question mark&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; ?

<p>
<i>
The trigraphs are new in SQL-2003.
</i>
</p>

<p><a name="left bracket or trigraph"> &nbsp; </a>
<a href="#xref-left bracket or trigraph"> &lt;left bracket or trigraph&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; <a href='#left bracket'>&lt;left bracket&gt;</a>  |  <a href='#left bracket trigraph'>&lt;left bracket trigraph&gt;</a>

<p><a name="right bracket or trigraph"> &nbsp; </a>
<a href="#xref-right bracket or trigraph"> &lt;right bracket or trigraph&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; <a href='#right bracket'>&lt;right bracket&gt;</a>  |  <a href='#right bracket trigraph'>&lt;right bracket trigraph&gt;</a>

<p><a name="left bracket"> &nbsp; </a>
<a href="#xref-left bracket"> &lt;left bracket&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; [

<p><a name="left bracket trigraph"> &nbsp; </a>
<a href="#xref-left bracket trigraph"> &lt;left bracket trigraph&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; ??(

<p><a name="right bracket"> &nbsp; </a>
<a href="#xref-right bracket"> &lt;right bracket&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; ]

<p><a name="right bracket trigraph"> &nbsp; </a>
<a href="#xref-right bracket trigraph"> &lt;right bracket trigraph&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; ??)

<p><a name="circumflex"> &nbsp; </a>
<a href="#xref-circumflex"> &lt;circumflex&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; ^

<p><a name="underscore"> &nbsp; </a>
<a href="#xref-underscore"> &lt;underscore&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; <a href="#xref-_"> _ </a>

<p><a name="vertical bar"> &nbsp; </a>
<a href="#xref-vertical bar"> &lt;vertical bar&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp;<font color=red>/* Nothing */</font>  |

<p><a name="left brace"> &nbsp; </a>
<a href="#xref-left brace"> &lt;left brace&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; {

<p><a name="right brace"> &nbsp; </a>
<a href="#xref-right brace"> &lt;right brace&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; }

<p><a href='#top'>Top</a></p>

<hr>
<h3> 5.2 <a href='#token'>&lt;token&gt;</a> and <a href='#separator'>&lt;separator&gt;</a> (p134)
</h3>

<p>
Specifying lexical units (tokens and separators) that participate in SQL language.
</p>

<p><a name="token"> &nbsp; </a>
<a href="#xref-token"> &lt;token&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; <a href='#nondelimiter token'>&lt;nondelimiter token&gt;</a>  |  <a href='#delimiter token'>&lt;delimiter token&gt;</a>

<p><a name="nondelimiter token"> &nbsp; </a>
<a href="#xref-nondelimiter token"> &lt;nondelimiter token&gt; </a>&nbsp;&nbsp;&nbsp;::=
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <a href='#regular identifier'>&lt;regular identifier&gt;</a><br>&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; <a href='#key word'>&lt;key word&gt;</a><br>&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; <a href='#unsigned numeric literal'>&lt;unsigned numeric literal&gt;</a><br>&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; <a href='#national character string literal'>&lt;national character string literal&gt;</a><br>&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; <a href='#bit string literal'>&lt;bit string literal&gt;</a><br>&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; <a href='#hex string literal'>&lt;hex string literal&gt;</a><br>&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; <a href='#large object length token'>&lt;large object length token&gt;</a><br>&nbsp;&nbsp;&nbsp;&nbsp; |&nbsp;&nbsp;&nbsp;&nbsp; <a href='#multiplier'>&lt;multiplier&gt;</a>
<p><a name="regular identifier"> &nbsp; </a>
<a href="#xref-regular identifier"> &lt;regular identifier&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; <a href='#identifier body'>&lt;identifier body&gt;</a>

<p><a name="identifier body"> &nbsp; </a>
<a href="#xref-identifier body"> &lt;identifier body&gt; </a>&nbsp;&nbsp;&nbsp;::=&nbsp;&nbsp; <a href='#identifier start'>&lt;identifier start&gt;</a>  [  <a href='#identifier part'>&lt;identifier part&gt;</a> ...  ]