Question

我正在尝试建立一个基本数据库，以帮助筛选许多CSV银行交易。

我已从多个帐户的多个表中导入所有交易，这些帐户的“扣除额”列已打勾为“ False”或“ True”

我正在尝试创建一个“创建视图”，以便将多个表中的数据推导出到一个表中以进行“扣除”。

基本； 来自多个具有收入列的表的银行交易显示为“ TRUE”

错误为-查询1错误：ERROR：指定了“收入”列的更多信息不止一次

大约一天以来，我一直在尝试各种代码，但似乎无法使其正常工作。

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Answer 1

您的对帐单中有一个以上的收入列：app.setState({user: newUser})和"EverydaySTG"."Income"。替换..：

"CC WTPC"."Income"

...作者：

CREATE VIEW "Deductions"
AS SELECT
    "EverydaySTG"."Income",
    "EverydaySTG"."Deduction",
    "EverydaySTG"."Date",
    "EverydaySTG"."Amount", 
    "EverydaySTG"."Payee",
    "CC WTPC"."Income",
    "CC WTPC"."Deduction",
    "CC WTPC"."Date",
    "CC WTPC"."Amount"
FROM
    "EverydaySTG", "CC WTPC"
WHERE (
    "EverydaySTG"."Deduction" = 'TRUE' ::text)
    Or ( "CC WTPC"."Deduction" = 'TRUE' ::text );

OP注释“结果是交易是水平填充的。不是收入，扣除额，日期，金额等整洁的单行。有没有办法使原始行保持完整，所以交易垂直堆叠？”

我了解他们希望改为使用UNION查询：

CREATE VIEW "Deductions"
AS SELECT
    "EverydaySTG"."Income" AS income_a,
    "EverydaySTG"."Deduction" AS deduction_a,
    "EverydaySTG"."Date" AS date_a,
    "EverydaySTG"."Amount" AS amount_a,
    "EverydaySTG"."Payee",
    "CC WTPC"."Income" AS income_b,
    "CC WTPC"."Deduction" AS deduction_b,
    "CC WTPC"."Date" AS date_b,
    "CC WTPC"."Amount" AS amount_b
FROM "EverydaySTG", "CC WTPC"
WHERE (
    "EverydaySTG"."Deduction" = 'TRUE' ::text)
    Or( "CC WTPC"."Deduction" = 'TRUE' ::text );

CREATE TABLE "EverydaySTG" (
    "Income" INTEGER
    "Deduction" CHARACTER VARYING
    "Date" DATE
    "Amount" INTEGER
    "Payee" CHARACTER VARYING
);

CREATE TABLE "CC WTPC" (
    "Income" INTEGER
    "Deduction" CHARACTER VARYING
    "Date" DATE
    "Amount" INTEGER
);

CREATE VIEW "Deductions_horizontal"
AS SELECT
    "EverydaySTG"."Income" AS income_a,
    "EverydaySTG"."Deduction" AS deduction_a,
    "EverydaySTG"."Date" AS date_a,
    "EverydaySTG"."Amount" AS amount_a,
    "EverydaySTG"."Payee",
    "CC WTPC"."Income" AS income_b,
    "CC WTPC"."Deduction" AS deduction_b,
    "CC WTPC"."Date" AS date_b,
    "CC WTPC"."Amount" AS amount_b
FROM "EverydaySTG", "CC WTPC"
WHERE (
    "EverydaySTG"."Deduction" = 'TRUE' ::text)
    Or( "CC WTPC"."Deduction" = 'TRUE' ::text );

Answer 2

您的事实是您的部门从相同的列表中获得了相同的列名称，结果是相同的列名称，但是在sql中不能使用相同的列名称，因此必须更改，例如：

CREATE VIEW "Deductions" AS
SELECT
  "EverydaySTG"."Income",
  "EverydaySTG"."Deduction",
  "EverydaySTG"."Date",
  "EverydaySTG"."Amount",
  "EverydaySTG"."Payee",
  "CC WTPC"."Income" AS Income_cc_wtpc,
  "CC WTPC"."Deduction" AS Deduction_cc_wtpc,
  "CC WTPC"."Date" AS Date_cc_wtpc,
  "CC WTPC"."Amount" AS Amount_cc_wtpc
FROM
  "EverydaySTG",
  "CC WTPC"
WHERE (
  "EverydaySTG"."Deduction" = 'TRUE' ::text)
  Or(
    "CC WTPC"."Deduction" = 'TRUE' ::text
);

PostgreSQL错误：列“收入”指定了多次

2 个答案: