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出自:https://docs.devexpress.com/CoreLibraries/DevExpress.XtraCharts.SeriesLabelBase.TextPattern Pattern Description {S} Displays the name of the series 阅读全文
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下面用linq写很顺手。 var ts_codes_QueShao = ( from ts_code in ts_codes_All join dr in dt.AsEnumerable() on ts_code equals dr["ts_code"].ToString() into tt fro 阅读全文
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如下 SELECT i.name AS [索引名称], SUM(s.used_page_count) * 8 AS [索引大小KB] FROM sys.dm_db_partition_stats AS s JOIN sys.indexes AS i ON s.[object_id] = i.[obj 阅读全文
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1 delete from ZZ1 where txt in( select txt from ZZ1 group by txt having count(txt) > 1) and ID not in(select max(ID) from ZZ1 group by txt having coun 阅读全文