如何使用sequelize定义NVARCHAR(MAX)字段？

Question

使用node.js和sequelize vis-a-vis MSSQL,如何定义NVARCHAR(MAX)字段？

Answer 1

如果在Sequelize中将数据类型设置为TEXT,则会自动将该字段转换NVARCHAR(MAX为SQL Server数据库.

我在文档中找不到这个

但是在第79行到第90行的Sequelize github存储库中提到了它.

在此处粘贴代码段:

    TEXT.prototype.toSql = function toSql() {
    // TEXT is deprecated in mssql and it would normally be saved as a non-unicode string.
    // Using unicode is just future proof
    if (this._length) {
      if (this._length.toLowerCase() === 'tiny') { // tiny = 2^8
        warn('MSSQL does not support TEXT with the `length` = `tiny` option. `NVARCHAR(256)` will be used instead.');
        return 'NVARCHAR(256)';
      }
      warn('MSSQL does not support TEXT with the `length` option. `NVARCHAR(MAX)` will be used instead.');
    }
    return 'NVARCHAR(MAX)';
  };

正如您所看到的,SQL Server不支持TEXT字段,因此它会将其转换为 NVARCHAR(MAX)