项目上需要整理目前数据库的数据字典文档。项目不规范,这种文档只要后期来补。这么多张表,每个字段都写到word文档里真心头大。就算前面写了个查询表结构的sql,但是最后整理到word里还是感觉有点麻烦。以前写过一个Oracle直接生成表结构的html文档,所以现在也想再弄个postgresql 版本的。查了一番文档,发现pg9.4不支持写文件。无奈放弃。最后选了一个这种方案,利用sql脚本中打印消息的功能。把生成的html文档打印出来,最后拷贝html文档代码到文本文件中保存,虽然比oracle那个麻烦了点,总算能得到想要的html文档了。slq脚本:--1.0 --2015-11-30 --postgresql-9.4.5 --打印出数据字典html --执行完毕,在pgAdmin的消息窗口,把打印内容拷贝到文本文件中,替换掉多余的输出:[PGSCRIPT ] ,删除头部的[QUERY ]及打印出的查询语句, --最后把文件另存为.html文件。 --用浏览器打开保存的网页,然后拷贝页面内容到word文档中,下面整理格式就可以了 --注意: --脚本里包含了详细版,和简版两个版本的数据字典,使用的时候注意切换到对应的标题 --"<tr><td>列名</td><td>类型</td><td>长度</td><td>主键约束</td><td>唯一约束</td><td>外键约束</td><td>可否为空</td><td>描述</td></tr>"; --"<tr><td>列名</td><td>类型</td><td>描述</td></tr>"; begin --查询表名 set @table = select distinct relname, relname||"("||(select description from pg_description where objoid = oid and objsubid = 0) ||"表"||")" as table_name from pg_class c,pg_attribute a where c.oid=a.attrelid and attstattarget=-1 and attrelid in(select oid from pg_class where relname in (select relname as table_name from pg_class where relkind="r" and relname like "exg_%" order by relname)) order by table_name; --数据字典(详细版):列名 类型 长度 主键约束 唯一约束 外键约束 可否为空 描述 set @att = select (select relname from pg_class where oid=a.attrelid) as table_name, "<tr><td>"||a.attname||"</td>" ||"<td>"||format_type(a.atttypid,a.atttypmod)||"</td>" ||"<td>"||(case when atttypmod-4>0 then atttypmod-4 else 0 end)||"</td>" ||"<td>"||(case when (select count(*) from pg_constraint where conrelid=a.attrelid and conkey[1]=attnum and contype="p")>0 then "Y" else "N" end)||"</td>" ||"<td>"||(case when (select count(*) from pg_constraint where conrelid=a.attrelid and conkey[1]=attnum and contype="u")>0 then "Y" else "N" end)||"</td>" ||"<td>"||(case when (select count(*) from pg_constraint where conrelid=a.attrelid and conkey[1]=attnum and contype="f")>0 then "Y" else "N" end)||"</td>" ||"<td>"||(case when a.attnotnull=true then "Y" else "N" end)||"</td>" ||"<td>"||col_description(a.attrelid,a.attnum)||"</td></tr>" from pg_attribute a where attstattarget=-1 and attrelid in(select oid from pg_class where relname in (select relname as table_name from pg_class where relkind="r" and relname like "exg_%" order by relname)) order by table_name,attnum; /* --数据字典(简版):列名 类型 描述 set @att = select (select relname from pg_class where oid=a.attrelid) as table_name, "<tr><td>"||a.attname||"</td>" ||"<td>"||format_type(a.atttypid,a.atttypmod)||"</td>" ||"<td>"||col_description(a.attrelid,a.attnum)||"</td></tr>" from pg_attribute a where attstattarget=-1 and attrelid in(select oid from pg_class where relname in (select relname as table_name from pg_class where relkind="r" and relname like "exg_%" order by relname)) order by table_name,attnum; */ --打印html文档 print "<!DOCTYPE html>"; print "<html>"; print "<head>"; print "<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />"; print "<title>数据字典</title>"; print "<style type="text/css">"; print "table { border-collapse: collapse; border-spacing: 0;}"; print "table td {border: solid 1px #000;}"; print "</style>"; set @i=0; while @i < lines(@table) begin set @table_name = @table[@i][0]; print @table[@i][1]; print "<table>"; print "<tr><td>列名</td><td>类型</td><td>长度</td><td>主键约束</td><td>唯一约束</td><td>外键约束</td><td>可否为空</td><td>描述</td></tr>"; --print "<tr><td>列名</td><td>类型</td><td>描述</td></tr>"; set @j=0; while @j < lines(@att) begin if @att[@j][0] = @table_name begin print @att[@j][1]; end set @j=@j+1; end print "</table>"; set @i=@i+1; end end --附: /* --数据字典--详细版 select (select relname ||"--"||(select description from pg_description where objoid = oid and objsubid = 0) from pg_class where oid=a.attrelid) as 表名, a.attname as 列名, format_type(a.atttypid,a.atttypmod) as 类型, (case when atttypmod-4>0 then atttypmod-4 else 0 end) as 长度, (case when (select count(*) from pg_constraint where conrelid=a.attrelid and conkey[1]=attnum and contype="p")>0 then "Y" else "N" end) as 主键约束, (case when (select count(*) from pg_constraint where conrelid=a.attrelid and conkey[1]=attnum and contype="u")>0 then "Y" else "N" end) as 唯一约束, (case when (select count(*) from pg_constraint where conrelid=a.attrelid and conkey[1]=attnum and contype="f")>0 then "Y" else "N" end) as 外键约束, (case when a.attnotnull=true then "Y" else "N" end) as 可否为空, col_description(a.attrelid,a.attnum) as 描述 from pg_attribute a where attstattarget=-1 and attrelid in(select oid from pg_class where relname in (select relname as table_name from pg_class where relkind="r" and relname like "exg_%" order by relname)) order by 表名,attnum;--数据字典--简版 select (select relname from pg_class where oid=a.attrelid) as table_name, (select (select description from pg_description where objoid = oid and objsubid = 0) ||"表"||"("||relname ||")" from pg_class where oid=a.attrelid) as 表名, a.attname as 列名, format_type(a.atttypid,a.atttypmod) as 类型, col_description(a.attrelid,a.attnum) as 描述 from pg_attribute a where attstattarget=-1 and attrelid in(select oid from pg_class where relname in (select relname as table_name from pg_class where relkind="r" and relname like "exg_%" order by relname)) order by table_name,attnum; 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