public override IDbCommand ADD_column(DBConnection db, string tableName, DBColumn column)
{
SqlCommand command = new SqlCommand();
command.CommandText =
$"ALTER TABLE {ToRealTableName(db.Application, tableName)} ADD {ColumnToSql(db, column, true)}";
return(command);
}
public override IDbCommand UPDATE_column(DBConnection db, string tableName, DBColumn column)
{
MySqlCommand command = new MySqlCommand();
command.CommandText =
$"ALTER TABLE {ToRealTableName(db.Application, tableName)} MODIFY COLUMN {ColumnToSql(db, column, true)}";
return(command);
}
public override string ColumnToSql(DBConnection db, DBColumn column, bool includeDefault)
{
DBForeignKey foreignKey = (column.Tabloid as DBTable).ForeignKeys.SingleOrDefault(fk => fk.SourceColumn == column.Name);
return
($"{AddQuote(column.Name)} " +
$"{DataType.FullDefinition(column.Type, Type, column.MaxLength)} " +
$"{(column.IsPrimary ? AutoIncrement : "")}" +
$"{(column.IsNullable ? " NULL" : " NOT NULL")}" +
$"{(includeDefault && !string.IsNullOrEmpty(column.DefaultValue) ? $" CONSTRAINT {DefaultName(db.Application, column.Tabloid.Name, column.Name)} DEFAULT {column.DefaultValue}" : "")}");
}
/// <summary>
/// Checks check & defaults if changed
/// </summary>
public void RefreshConstraints(DBColumn dbColumn, DbColumn designerColumn)
{
/// check
#warning TODO: DbColumn.check
/// default
string defaultValue = designerColumn.RealDefaultValue(dbColumn.Type);
if (string.IsNullOrEmpty(defaultValue) != (dbColumn.DefaultValue == null) || dbColumn.DefaultValue != defaultValue)
{
// drop old
if (dbColumn.DefaultValue != null)
{
_db.Commands.Enqueue(_db.CommandSet.DROP_default(_db, Name, dbColumn.Name));
}
// create new
if (!string.IsNullOrWhiteSpace(defaultValue))
{
_db.Commands.Enqueue(_db.CommandSet.ADD_default(_db, Name, dbColumn.Name, defaultValue));
}
}
}
public override IDbCommand RENAME_column(DBConnection db, string tableName, string oldColumnName, DBColumn newColumn)
{
MySqlCommand command = new MySqlCommand();
command.CommandText =
$"ALTER TABLE {ToRealTableName(db.Application, tableName)} CHANGE COLUMN {AddQuote(oldColumnName)} {ColumnToSql(db, newColumn, true)}";
return(command);
}
public override IDbCommand RENAME_column(DBConnection db, string tableName, string oldColumnName, DBColumn newColumn)
{
SqlCommand command = new SqlCommand();
command.CommandText =
$"sp_rename '{ToRealTableName(db.Application, tableName, false)}.{oldColumnName}', '{newColumn.Name}', 'COLUMN';";
return(command);
}
public abstract IDbCommand RENAME_column(DBConnection db, string tableName, string oldColumnName, DBColumn newColumn);
public abstract IDbCommand UPDATE_column(DBConnection db, string tableName, DBColumn column);
