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cjd
322
DouyinApi.FrameWork/DbHelper.ttinclude
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322
DouyinApi.FrameWork/DbHelper.ttinclude
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<#+
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public class config
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{
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public static readonly string ConnectionString = "Data Source=(localdb)\\MSSQLLocalDB;Initial Catalog=WMBLOG_MSSQL_1;Integrated Security=True;Connect Timeout=30;Encrypt=False;TrustServerCertificate=False;ApplicationIntent=ReadWrite;MultiSubnetFailover=False";
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public static readonly string DbDatabase = "";
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public static readonly string TableName = "";
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}
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#>
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<#+
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public class DbHelper
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{
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#region GetDbTables
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public static List<string> GetDbTablesNew(string connectionString, string database,string tables = null)
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{
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if (!string.IsNullOrEmpty(tables))
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{
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tables = string.Format(" and obj.name in ('{0}')", tables.Replace(",", "','"));
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}
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string sql = string.Format(@"SELECT
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obj.name tablename
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from {0}.sys.objects obj
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inner join {0}.dbo.sysindexes idx on obj.object_id=idx.id and idx.indid<=1
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INNER JOIN {0}.sys.schemas schem ON obj.schema_id=schem.schema_id
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left join {0}.sys.extended_properties g ON (obj.object_id = g.major_id AND g.minor_id = 0 AND g.name= 'MS_Description')
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where type='U' {1}
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order by obj.name", database,tables);
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DataTable dt = GetDataTable(connectionString, sql);
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return dt.Rows.Cast<DataRow>().Select(row =>row.Field<string>("tablename")).ToList();
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}
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public static List<DbTable> GetDbTables(string connectionString, string database, string tables = null)
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{
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if (!string.IsNullOrEmpty(tables))
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{
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tables = string.Format(" and obj.name in ('{0}')", tables.Replace(",", "','"));
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}
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#region SQL
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string sql = string.Format(@"SELECT
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obj.name tablename,
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schem.name schemname,
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idx.rows,
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CAST
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(
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CASE
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WHEN (SELECT COUNT(1) FROM sys.indexes WHERE object_id= obj.OBJECT_ID AND is_primary_key=1) >=1 THEN 1
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ELSE 0
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END
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AS BIT) HasPrimaryKey
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from {0}.sys.objects obj
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inner join {0}.dbo.sysindexes idx on obj.object_id=idx.id and idx.indid<=1
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INNER JOIN {0}.sys.schemas schem ON obj.schema_id=schem.schema_id
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where type='U' {1}
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order by obj.name", database, tables);
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#endregion
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DataTable dt = GetDataTable(connectionString, sql);
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return dt.Rows.Cast<DataRow>().Select(row => new DbTable
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{
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TableName = row.Field<string>("tablename"),
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SchemaName = row.Field<string>("schemname"),
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Rows = row.Field<int>("rows"),
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HasPrimaryKey = row.Field<bool>("HasPrimaryKey")
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}).ToList();
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}
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#endregion
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#region GetDbColumns
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public static List<DbColumn> GetDbColumns(string connectionString, string database, string tableName, string schema = "dbo")
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{
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#region SQL
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string sql = string.Format(@"
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WITH indexCTE AS
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(
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SELECT
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ic.column_id,
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ic.index_column_id,
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ic.object_id
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FROM {0}.sys.indexes idx
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INNER JOIN {0}.sys.index_columns ic ON idx.index_id = ic.index_id AND idx.object_id = ic.object_id
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WHERE idx.object_id =OBJECT_ID(@tableName) AND idx.is_primary_key=1
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)
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select
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colm.column_id ColumnID,
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CAST(CASE WHEN indexCTE.column_id IS NULL THEN 0 ELSE 1 END AS BIT) IsPrimaryKey,
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colm.name ColumnName,
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systype.name ColumnType,
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colm.is_identity IsIdentity,
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colm.is_nullable IsNullable,
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cast(colm.max_length as int) ByteLength,
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(
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case
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when systype.name='nvarchar' and colm.max_length>0 then colm.max_length/2
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when systype.name='nchar' and colm.max_length>0 then colm.max_length/2
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when systype.name='ntext' and colm.max_length>0 then colm.max_length/2
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else colm.max_length
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end
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) CharLength,
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cast(colm.precision as int) Precision,
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cast(colm.scale as int) Scale,
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prop.value Remark
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from {0}.sys.columns colm
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inner join {0}.sys.types systype on colm.system_type_id=systype.system_type_id and colm.user_type_id=systype.user_type_id
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left join {0}.sys.extended_properties prop on colm.object_id=prop.major_id and colm.column_id=prop.minor_id
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LEFT JOIN indexCTE ON colm.column_id=indexCTE.column_id AND colm.object_id=indexCTE.object_id
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where colm.object_id=OBJECT_ID(@tableName)
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order by colm.column_id", database);
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#endregion
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SqlParameter param = new SqlParameter("@tableName", SqlDbType.NVarChar, 100) { Value = string.Format("{0}.{1}.{2}", database, schema, tableName) };
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DataTable dt = GetDataTable(connectionString, sql, param);
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return dt.Rows.Cast<DataRow>().Select(row => new DbColumn()
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{
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ColumnID = row.Field<int>("ColumnID"),
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IsPrimaryKey = row.Field<bool>("IsPrimaryKey"),
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ColumnName = row.Field<string>("ColumnName"),
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ColumnType = row.Field<string>("ColumnType"),
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IsIdentity = row.Field<bool>("IsIdentity"),
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IsNullable = row.Field<bool>("IsNullable"),
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ByteLength = row.Field<int>("ByteLength"),
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CharLength = row.Field<int>("CharLength"),
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Precision=row.Field<int>("Precision"),
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Scale = row.Field<int>("Scale"),
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Remark = row["Remark"].ToString()
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}).ToList();
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}
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#endregion
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#region GetDataTable
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public static DataTable GetDataTable(string connectionString, string commandText, params SqlParameter[] parms)
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{
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using (SqlConnection connection = new SqlConnection(connectionString))
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{
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SqlCommand command = connection.CreateCommand();
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command.CommandText = commandText;
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command.Parameters.AddRange(parms);
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SqlDataAdapter adapter = new SqlDataAdapter(command);
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DataTable dt = new DataTable();
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adapter.Fill(dt);
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return dt;
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}
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}
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#endregion
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#region GetPrimaryKey
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public static string GetPrimaryKey(List<DbColumn> dbColumns)
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{
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string primaryKey = string.Empty;
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if (dbColumns!=null&&dbColumns.Count>0)
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{
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foreach (var item in dbColumns)
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{
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if (item.IsPrimaryKey==true)
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{
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primaryKey = item.ColumnName;
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}
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}
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}
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return primaryKey;
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}
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#endregion
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}
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#region DbTable
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public sealed class DbTable
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{
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public string TableName { get; set; }
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public string SchemaName { get; set; }
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public int Rows { get; set; }
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public bool HasPrimaryKey { get; set; }
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}
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#endregion
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#region DbColumn
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public sealed class DbColumn
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{
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public int ColumnID { get; set; }
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public bool IsPrimaryKey { get; set; }
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public string ColumnName { get; set; }
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public string ColumnType { get; set; }
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public string CSharpType
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{
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get
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{
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return SqlServerDbTypeMap.MapCsharpType(ColumnType);
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}
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}
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/// <summary>
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///
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/// </summary>
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public Type CommonType
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{
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get
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{
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return SqlServerDbTypeMap.MapCommonType(ColumnType);
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}
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}
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public int ByteLength { get; set; }
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public int CharLength { get; set; }
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public int Precision{get;set;}
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public int Scale { get; set; }
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public bool IsIdentity { get; set; }
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public bool IsNullable { get; set; }
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public string Remark { get; set; }
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}
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#endregion
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#region SqlServerDbTypeMap
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public class SqlServerDbTypeMap
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{
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public static string MapCsharpType(string dbtype)
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{
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if (string.IsNullOrEmpty(dbtype)) return dbtype;
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dbtype = dbtype.ToLower();
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string csharpType = "object";
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switch (dbtype)
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{
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case "bigint": csharpType = "long"; break;
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case "binary": csharpType = "byte[]"; break;
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case "bit": csharpType = "bool"; break;
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case "char": csharpType = "string"; break;
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case "date": csharpType = "DateTime"; break;
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case "datetime": csharpType = "DateTime"; break;
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case "datetime2": csharpType = "DateTime"; break;
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case "datetimeoffset": csharpType = "DateTimeOffset"; break;
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case "decimal": csharpType = "decimal"; break;
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case "float": csharpType = "double"; break;
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case "image": csharpType = "byte[]"; break;
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case "int": csharpType = "int"; break;
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case "money": csharpType = "decimal"; break;
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case "nchar": csharpType = "string"; break;
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case "ntext": csharpType = "string"; break;
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case "numeric": csharpType = "decimal"; break;
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case "nvarchar": csharpType = "string"; break;
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case "real": csharpType = "Single"; break;
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case "smalldatetime": csharpType = "DateTime"; break;
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case "smallint": csharpType = "short"; break;
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case "smallmoney": csharpType = "decimal"; break;
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case "sql_variant": csharpType = "object"; break;
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case "sysname": csharpType = "object"; break;
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case "text": csharpType = "string"; break;
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case "time": csharpType = "TimeSpan"; break;
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case "timestamp": csharpType = "byte[]"; break;
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case "tinyint": csharpType = "byte"; break;
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case "uniqueidentifier": csharpType = "Guid"; break;
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case "varbinary": csharpType = "byte[]"; break;
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case "varchar": csharpType = "string"; break;
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case "xml": csharpType = "string"; break;
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default: csharpType = "object"; break;
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}
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return csharpType;
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}
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public static Type MapCommonType(string dbtype)
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{
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if (string.IsNullOrEmpty(dbtype)) return Type.Missing.GetType();
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dbtype = dbtype.ToLower();
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Type commonType = typeof(object);
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switch (dbtype)
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{
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case "bigint": commonType = typeof(long); break;
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case "binary": commonType = typeof(byte[]); break;
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case "bit": commonType = typeof(bool); break;
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case "char": commonType = typeof(string); break;
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case "date": commonType = typeof(DateTime); break;
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case "datetime": commonType = typeof(DateTime); break;
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case "datetime2": commonType = typeof(DateTime); break;
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case "datetimeoffset": commonType = typeof(DateTimeOffset); break;
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case "decimal": commonType = typeof(decimal); break;
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case "float": commonType = typeof(double); break;
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case "image": commonType = typeof(byte[]); break;
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case "int": commonType = typeof(int); break;
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case "money": commonType = typeof(decimal); break;
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case "nchar": commonType = typeof(string); break;
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case "ntext": commonType = typeof(string); break;
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case "numeric": commonType = typeof(decimal); break;
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case "nvarchar": commonType = typeof(string); break;
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case "real": commonType = typeof(Single); break;
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case "smalldatetime": commonType = typeof(DateTime); break;
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case "smallint": commonType = typeof(short); break;
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case "smallmoney": commonType = typeof(decimal); break;
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case "sql_variant": commonType = typeof(object); break;
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case "sysname": commonType = typeof(object); break;
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case "text": commonType = typeof(string); break;
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case "time": commonType = typeof(TimeSpan); break;
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case "timestamp": commonType = typeof(byte[]); break;
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case "tinyint": commonType = typeof(byte); break;
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case "uniqueidentifier": commonType = typeof(Guid); break;
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case "varbinary": commonType = typeof(byte[]); break;
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case "varchar": commonType = typeof(string); break;
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case "xml": commonType = typeof(string); break;
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default: commonType = typeof(object); break;
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}
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return commonType;
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}
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}
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#endregion
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#>
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