显示中的表结构(新增了索引及表的描述信息)

SELECT
表名=casewhena.colorder=1thend.nameelse''end,
表说明=casewhena.colorder=1thenisnull(f.value,'')else''end,
字段序号=a.colorder,
字段名=a.name,
标识=casewhenCOLUMNPROPERTY(a.id,a.name,'IsIdentity')=1then'√'else''end,
主键=casewhenexists(SELECT1FROMsysobjectswherextype='PK'andnamein(
SELECTnameFROMsysindexesWHEREindidin(
SELECTindidFROMsysindexkeysWHEREid=a.idANDcolid=a.colid
)))then'√'else''end,
类型=b.name,
占用字节数=a.length,
长度=COLUMNPROPERTY(a.id,a.name,'PRECISION'),
小数位数=isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),
允许空=casewhena.isnullable=1then'√'else''end,
默认值=isnull(e.text,''),
字段说明=isnull(g.[value],''),
索引名称=isnull(h.索引名称,''),
索引顺序=isnull(h.排序,'')
FROMsyscolumnsa
leftjoinsystypesbona.xtype=b.xusertype
innerjoinsysobjectsdona.id=d.id andd.xtype='U'and d.name<>'dtproperties'
leftjoinsyscommentseona.cdefault=e.id
leftjoinsyspropertiesgona.id=g.idanda.colid=g.smallid
leftjoinsyspropertiesfond.id=f.idandf.smallid=0
leftjoin(--这部分是索引信息,如果要显示索引与表及字段的对应关系,可以只要此部分
select索引名称=a.name,c.id,d.colid
,排序=caseindexkey_property(c.id,b.indid,b.keyno,'isdescending')
when1then'降序'when0then'升序'end
fromsysindexesa
joinsysindexkeysbona.id=b.idanda.indid=b.indid
join(--这里的作用是有多个索引时,取索引号最小的那个
selectid,colid,indid=min(indid)fromsysindexkeys
groupbyid,colid)b1onb.id=b1.idandb.colid=b1.colidandb.indid=b1.indid
joinsysobjectsconb.id=c.idandc.xtype='U'and c.name<>'dtproperties'
joinsyscolumnsdonb.id=d.idandb.colid=d.colid
wherea.indidnotin(0,255)
)hona.id=h.idanda.colid=h.colid
--whered.name='要查询的表' --如果只查询指定表,加上此条件
orderbya.id,a.colorder