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Shorten long SELECT query in data grid, using '*' when all columns are involved.

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This commit is contained in:
Ansgar Becker
2013-10-03 04:16:39 +00:00
parent 54a297f39b
commit 76aa605d33
1 changed files with 9 additions and 2 deletions
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11
source/main.pas
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@@ -4486,7 +4486,7 @@ var
vt: TVirtualStringTree;
Select: String;
RefreshingData, IsKeyColumn: Boolean;
i, Offset, ColLen, ColWidth, VisibleColumns, MaximumRows: Integer;
i, Offset, ColLen, ColWidth, VisibleColumns, MaximumRows, FullColumns: Integer;
KeyCols, ColWidths, WantedColumnOrgnames: TStringList;
WantedColumns: TTableColumnList;
c: TTableColumn;
@@ -4597,14 +4597,21 @@ begin
ngMSSQL: Select := Select + ' LEFT(CAST(' + DBObj.Connection.QuoteIdent(c.Name) + ' AS NVARCHAR('+IntToStr(GRIDMAXDATA)+')), ' + IntToStr(GRIDMAXDATA) + '), ';
ngMySQL: Select := Select + ' LEFT(' + DBObj.Connection.QuoteIdent(c.Name) + ', ' + IntToStr(GRIDMAXDATA) + '), ';
end;
end else
end else begin
Select := Select + ' ' + DBObj.Connection.QuoteIdent(c.Name) + ', ';
Inc(FullColumns);
end;
WantedColumns.Add(c);
WantedColumnOrgnames.Add(c.Name);
end;
end;
// Cut last comma
Delete(Select, Length(Select)-1, 2);
// Shorten the whole query if all columns are involved
if FullColumns = SelectedTableColumns.Count then
Select := '*';
// Include db name for cases in which dbtree is switching databases and pending updates are in process
Select := Select + ' FROM '+DBObj.QuotedDbAndTableName;