Question

我有这样的代码：

price = Price.query.filter(and_(Price.product_id == data['product_id'], Price.min_qty >= data['quantity'], Price.max_qty <= data['quantity'])).first()

它不起作用并给出错误，但如果我只使用2个参数，那就很好

price = Price.query.filter(and_(Price.product_id == data['product_id'], Price.min_qty >= data['quantity'])).first()

为什么我不能有三个参数？我到处搜索，没有找到答案。我尝试实现SELECT * FROM价格WHERE product_id ='product_id'AND min_qty ='quantity'AND max_qty ='quantity'

谢谢

Answer 1

你可以试试这个：


nginx version: nginx/1.10.3 (Ubuntu)
built with OpenSSL 1.0.2g  1 Mar 2016
TLS SNI support enabled
configure arguments: --with-cc-opt='-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_addition_module --with-http_dav_module --with-http_geoip_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_v2_module --with-http_sub_module --with-http_xslt_module --with-stream --with-stream_ssl_module --with-mail --with-mail_ssl_module --with-threads

或者使用和少用一行。

如何在sqlalchemy中使用带有三个参数的过滤器

1 个答案: