1

我收到此错误：字段“bankid”必须有一个值。

为了解决这个问题，我必须使用 Uniquery Fields 编辑器添加字段并将“必需”属性设置为 False，同时将 autogeneratedvalue 设置为 arAutoInc。

这是唯一的方法吗？将字段添加到唯一性？

桌子：

CREATE TABLE public.banks (
  bank    varchar(50),
  branch  varchar(80),
  "no"    varchar(30),
  bankid  integer NOT NULL GENERATED ALWAYS AS IDENTITY,
)
WITH (
    OIDS = FALSE
  );

独特的组件：

  object UniQuery2: TUniQuery
    SQLInsert.Strings = (
      'INSERT INTO "Banks"'
      '  (bank, branch, no)'
      'VALUES'
      '  (:bank, :branch, :no)  RETURNING bankid;')
    SQLUpdate.Strings = (
      'update "Banks" set bank=:bank, branch=:branch, "no"=:no'
      'where bankid=:bankid')
    SQLLock.Strings = (
      '')
    SQLRefresh.Strings = (
      'SELECT bank, branch, no, bankid FROM "Banks"'
      'WHERE'
      '  bankid = :bankid')
    SQLRecCount.Strings = (
      'SELECT count(*) FROM ('
      'SELECT * FROM "Banks"'
      ''
      ') t')
    Connection = UniConnection1
    SQL.Strings = (
      'select * from "Banks" order by bank,branch,"no"')
    Options.ReturnParams = True
    Left = 64
    Top = 80
    object UniQuery2bank: TStringField
      FieldName = 'bank'
      Required = True
      Size = 50
    end
    object UniQuery2branch: TStringField
      FieldName = 'branch'
      Required = True
      Size = 80
    end
    object UniQuery2no: TStringField
      FieldName = 'no'
      Required = True
      Size = 30
    end
    object UniQuery2bankid: TIntegerField
      AutoGenerateValue = arAutoInc
      FieldName = 'bankid'
    end

  end

德尔福代码：

UniQuery2.Options.DefaultValues := True;
uniquery2.open;
UniQuery2.Append;
UniQuery2.fieldByName('bank').AsString:=sEdit1.Text;
UniQuery2.fieldByName('branch').AsString:=sEdit2.Text;
UniQuery2.fieldByName('no').AsString:=sEdit2.Text;
UniQuery2.Post;

德尔福 10.2.3 PostgreSQL 10.8

4

1 回答 1

1

当 Uniquery 未附加到数据源和 Dbgrid 时，Ago 解决方案的参数化形式可以解决问题

uq.sql.text:='upadte table1 set field1=:f';
uq.parambyname('f').asinteger:=somevalue;
uq.execute;

当 uniquery 已合并数据和计算字段以与 dbgrid 一起使用时：

uq.append;
uq.fieldbyname('field1').asinteger:=somevalue;
//****
uq.filedbyname('id').required:=false;
//****
uq.post;
于 2019-07-02T22:08:24.600 回答