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Update mysql add column

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sunkaixuan
2022-12-19 19:30:36 +08:00
parent 6811d2d9de
commit 98426de8b6
1 changed files with 42 additions and 0 deletions
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42
Src/Asp.Net/SqlSugar/Realization/MySql/DbMaintenance/MySqlDbMaintenance.cs
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@@ -428,6 +428,48 @@ namespace SqlSugar
return tableString;
}
public override bool AddColumn(string tableName, DbColumnInfo columnInfo)
{
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);
if (sql != null && columnInfo.ColumnDescription.HasValue() &&!sql.ToLower().Contains("comment"))
{
sql = $"{sql}{" COMMENT '"+ columnInfo.ColumnDescription.ToSqlFilter()+ "' "}";
}
this.Context.Ado.ExecuteCommand(sql);
if (isAddNotNUll)
{
var dtColums = this.Context.Queryable<object>().AS(columnInfo.TableName).Where("1=2")
.Select(this.SqlBuilder.GetTranslationColumnName(columnInfo.DbColumnName)).ToDataTable().Columns.Cast<System.Data.DataColumn>();
var dtColumInfo = dtColums.First(it => it.ColumnName.EqualCase(columnInfo.DbColumnName));
var type = UtilMethods.GetUnderType(dtColumInfo.DataType);
var value = type == UtilConstants.StringType ? (object)"" : Activator.CreateInstance(type);
if (this.Context.CurrentConnectionConfig.DbType == DbType.Oracle)
{
value = columnInfo.DefaultValue;
if (value.Equals(""))
{
value = "empty";
}
}
var dt = new Dictionary<string, object>();
dt.Add(columnInfo.DbColumnName, value);
this.Context.Updateable(dt)
.AS(tableName)
.Where($"{columnInfo.DbColumnName} is null ").ExecuteCommand();
columnInfo.IsNullable = false;
UpdateColumn(tableName, columnInfo);
}
return true;
}
protected override string GetSize(DbColumnInfo item)
{
string dataSize = null;