根据年月得到当月的天数代码,MSSQL代码库,德仔网

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【MSSQL】根据年月得到当月的天数
作者:maco_wang / 发布于2012/2/8/ 556
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<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">go</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: green; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">--</span><span style="color: green; font-family: 宋体; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes; mso-ascii-font-family: "Courier New"; mso-hansi-font-family: "Courier New"; mso-bidi-font-family: "Courier New";">创建函数</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: blue; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">create</span><span lang="EN-US" style="font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;"> <span style="color: blue;">function</span> [dbo]<span style="color: gray;">.</span>[get_days]</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: gray; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">(</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;"><span style="mso-tab-count: 1;">    </span>@yearmonth <span style="color: blue;">varchar</span><span style="color: gray;">(</span>6<span style="color: gray;">)</span> <span style="color: green;">--</span></span><span style="color: green; font-family: 宋体; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes; mso-ascii-font-family: "Courier New"; mso-hansi-font-family: "Courier New"; mso-bidi-font-family: "Courier New";">参数格式：</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: gray; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">)</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: blue; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">returns</span><span lang="EN-US" style="font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;"> <span style="color: blue;">int</span></span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: blue; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">as</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: blue; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">begin</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;"><span style="mso-tab-count: 1;">    </span><span style="color: blue;">return</span> <span style="color: gray;">(</span><span style="color: fuchsia;">datediff</span><span style="color: gray;">(</span>d<span style="color: gray;">,</span>@yearmonth<span style="color: gray;">+</span><span style="color: red;">'01'</span><span style="color: gray;">,</span><span style="color: fuchsia;">dateadd</span><span style="color: gray;">(</span>mm<span style="color: gray;">,</span>1<span style="color: gray;">,</span>@yearmonth<span style="color: gray;">+</span><span style="color: red;">'01'</span><span style="color: gray;">)))</span></span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: blue; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">end</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: blue; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;"> </span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: green; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">--</span><span style="color: green; font-family: 宋体; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes; mso-ascii-font-family: "Courier New"; mso-hansi-font-family: "Courier New"; mso-bidi-font-family: "Courier New";">测试示例</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: blue; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">select</span><span lang="EN-US" style="font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;"> dbo<span style="color: gray;">.</span>[get_days]<span style="color: gray;">(</span><span style="color: red;">'201103'</span><span style="color: gray;">)</span></span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: gray; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;"> </span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: green; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">--</span><span style="color: green; font-family: 宋体; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes; mso-ascii-font-family: "Courier New"; mso-hansi-font-family: "Courier New"; mso-bidi-font-family: "Courier New";">运行结果</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: green; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">/*</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: green; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">31</span>
<p align="left" class="MsoNormal" style="margin: 0cm 0cm 0pt; text-align: left; mso-layout-grid-align: none;"><span lang="EN-US" style="color: green; font-family: "Courier New"; font-size: 10pt; mso-font-kerning: 0pt; mso-no-proof: yes;">*/</span>
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