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sunkaixuan
2022-04-23 15:43:45 +08:00
parent 5bdf1ca4a7
commit 8c8d5b5259
1 changed files with 19 additions and 0 deletions
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19
Src/Asp.Net/SqlSugar/Abstract/DbMaintenanceProvider/Methods.cs
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@@ -196,8 +196,27 @@ namespace SqlSugar
public virtual bool AddColumn(string tableName, DbColumnInfo columnInfo) public virtual bool AddColumn(string tableName, DbColumnInfo columnInfo)
{ {
tableName = this.SqlBuilder.GetTranslationTableName(tableName); tableName = this.SqlBuilder.GetTranslationTableName(tableName);
var isAddNotNUll = columnInfo.IsNullable == false && columnInfo.DefaultValue.HasValue();
if (isAddNotNUll)
{
columnInfo = this.Context.Utilities.TranslateCopy(columnInfo);
columnInfo.IsNullable = true;
}
string sql = GetAddColumnSql(tableName, columnInfo); string sql = GetAddColumnSql(tableName, columnInfo);
this.Context.Ado.ExecuteCommand(sql); this.Context.Ado.ExecuteCommand(sql);
if (isAddNotNUll)
{
var dtColums = this.Context.Queryable<object>().AS(columnInfo.TableName).Where("1=2").ToDataTable().Columns.Cast<System.Data.DataColumn>();
var dtColumInfo = dtColums.First(it => it.ColumnName.EqualCase(columnInfo.DbColumnName));
var type = UtilMethods.GetUnderType(dtColumInfo.DataType);
var value= type==UtilConstants.StringType?(object)"": Activator.CreateInstance(type);
var dt = new Dictionary<string, object>();
dt.Add(columnInfo.DbColumnName, value);
this.Context.Updateable(dt)
.AS(tableName)
.Where($"{columnInfo.DbColumnName} is null ").ExecuteCommand();
UpdateColumn(tableName, columnInfo);
}
return true; return true;
} }
public virtual bool UpdateColumn(string tableName, DbColumnInfo column) public virtual bool UpdateColumn(string tableName, DbColumnInfo column)