/// <summary>
/// Builds the sql result.
/// </summary>
/// <param name="sql">The sql.</param>
/// <returns>An ISqlResult.</returns>
public ISqlResult BuildSqlResult(ISql sql)
{
return(sql switch
{
IQuery query => BuildQuery(query),
IfSql ifSql => BuilderIfSql(ifSql),
StringSql stringSql => BuilderStringSql(stringSql),
ExistSql existSql => BuilderExist(existSql),
CountDatabaseSql countDatabaseSql => BuildCountForDatabase(countDatabaseSql),
DeleteDatabaseSql deleteDatabaseSql => BuildDeleteDatabase(deleteDatabaseSql),
AllTableNamesSql allTableNamesSql => BuildAllTableName(allTableNamesSql),
CreateDatabaseSql createDatabaseSql => BuildCreateDatabase(createDatabaseSql),
AllDatabaseSql allDatabaseSql => BuildAllDatabase(allDatabaseSql),
CreateTableSql createTableSql => BuildCreateTable(createTableSql),
CountTableSql countTableSql => BuildTableCount(countTableSql),
UpdateTableNameSql updateTableNameSql => BuildUpdateTableName(updateTableNameSql),
DeleteTableSql deleteTableSql => BuildDeleteTable(deleteTableSql),
ColumsNamesSql columsNamesSql => BuildColumnNames(columsNamesSql),
CountColumsSql countColumsSql => BuildColumnsCount(countColumsSql),
RenameColumnSql renameColumnSql => BuildRenameColumnsName(renameColumnSql),
UpdateColumnsSql updateColumnsSql => BuildUpdateColumns(updateColumnsSql),
AddColumnsSql addColumnsSql => BuildAddColumns(addColumnsSql),
DeleteColumsSql deleteColumsSql => BuildDeleteColumn(deleteColumsSql),
CreateIndexSql createIndexSql => BuildCreateIndex(createIndexSql),
DeleteIndexSql deleteIndexSql => BuildDeleteIndex(deleteIndexSql),
CountIndexSql countIndexSql => BuildIndexCount(countIndexSql),
RenameIndexSql renameIndexSql => RenameIndexSql(renameIndexSql),
DeleteSql deleteSql => BuildDeleteSql(deleteSql),
InsertSql insertSql => BuildInsertSql(insertSql),
UpdateSql updateSql => BuildUpdateSql(updateSql),
_ => new ParmsSqlResult()
});
/// <summary>
/// Builds the update columns.
/// </summary>
/// <param name="updateColumnsSql">The update columns sql.</param>
/// <returns>An ISqlResult.</returns>
protected virtual ISqlResult BuildUpdateColumns(UpdateColumnsSql updateColumnsSql)
{
var r = new ParmsSqlResult();
var sqlType = _typeMap.GetSqlType(updateColumnsSql.TypeCode.ToString());
var sql = $"alter table {updateColumnsSql.TableName} modify {updateColumnsSql.ColumnName} {sqlType}";
if (updateColumnsSql.Lentgh < 0)
{
throw new ArgumentException("长度不能为小于0");
}
var lengthStr = GetLengthStr(updateColumnsSql.Lentgh, updateColumnsSql.TypeCode);
sql = $"{sql}{lengthStr}";
if (updateColumnsSql.IsNotNull)
{
sql = $"{sql} not null";
}
r.SQL = sql;
return(r);
}
