特定计数的逻辑

Question

我想用查询结果填充asp：GridView。我的查询，必须计算特定status_id的发生次数，如果列'san_proposta.credenciada_id'与值10不同。如果列'san_proposta.credenciada_id'等于其他行中的值10，我需要计数具有'credenciada_id'等于10的特定status_id的所有发生。

我正在尝试以下代码，但我不知道如何处理这些细节计数。

SELECT DISTINCT San_Proposta.Imovel_Id, San_Logradouro.Descricao, San_Endereco.Logradouro, San_Imovel.Numero, San_TipoComplemento.Descricao AS Expr1,
San_Imovel.Complemento, San_Imovel.TipoDsc1, San_Transacao.TransacaoSigla, San_Credenciada.Apelido, San_Transacao.Transacao_ID, COUNT(San_Proposta.StatusProposta_Id) AS NumeroProposta
FROM San_Proposta
JOIN San_Imovel
ON San_Proposta.Imovel_Id = San_Imovel.Imovel_Id
JOIN San_Endereco
ON San_Imovel.Endereco_Id = San_Endereco.Endereco_Id
JOIN San_Logradouro
ON San_Endereco.Logradouro_Id = San_Logradouro.Logradouro_Id
JOIN San_TipoComplemento
ON San_Imovel.TipoComplemento_Id = San_TipoComplemento.TipoComplemento_Id
JOIN San_Transacao
ON San_Imovel.Transacao_ID = San_Transacao.Transacao_ID
JOIN San_Credenciada
ON San_Imovel.Credenciada_Id = San_Credenciada.Credenciada_Id
WHERE (San_Imovel.Credenciada_Id = 10 OR San_Proposta.Credenciada_Id = 10)
GROUP BY San_Proposta.Imovel_Id, San_Logradouro.Descricao, San_Endereco.Logradouro, San_Imovel.Numero,
San_TipoComplemento.Descricao, San_Imovel.Complemento, San_Imovel.TipoDsc1, San_Transacao.TransacaoSigla,
San_Credenciada.Apelido, San_Transacao.Transacao_ID, San_Proposta.StatusProposta_Id,
San_Proposta.Credenciada_Id, San_Imovel.Credenciada_Id
ORDER BY San_Proposta.Imovel_Id DESC

Answer 1

根据你所说的话（如果我正确地解释你），它看起来像是

COUNT(CASE WHEN San_Proposta.credenciada_id = 10 THEN San_Proposta.StatusProposta_Id ELSE NULL END)

对你的计数有效。