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Foreign key constraint symbol names must be unique in a database. To avoid violation errors the "Copy table" dialog should just leave the CONSTRAINT clause out from the CREATE TABLE code. In that case MySQL auto creates a valid name on demand. See http://www.heidisql.com/forum.php?t=6086

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This commit is contained in:
Ansgar Becker
2010-06-30 23:37:23 +00:00
parent 780cf0f19f
commit 33bf95ba12
3 changed files with 10 additions and 6 deletions
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10
source/mysql_connection.pas
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@ -88,7 +88,7 @@ type
Modified, Added, KeyNameWasCustomized: Boolean;
constructor Create;
destructor Destroy; override;
function SQLCode: String;
function SQLCode(IncludeSymbolName: Boolean): String;
end;
TForeignKeyList = TObjectList<TForeignKey>;
@ -2560,11 +2560,15 @@ begin
inherited Destroy;
end;
function TForeignKey.SQLCode: String;
function TForeignKey.SQLCode(IncludeSymbolName: Boolean): String;
var
i: Integer;
begin
Result := 'CONSTRAINT '+TMySQLConnection.QuoteIdent(KeyName)+' FOREIGN KEY (';
Result := '';
// Symbol names are unique in a db. In order to autocreate a valid name we leave the constraint clause away.
if IncludeSymbolName then
Result := 'CONSTRAINT '+TMySQLConnection.QuoteIdent(KeyName)+' ';
Result := Result + 'FOREIGN KEY (';
for i:=0 to Columns.Count-1 do
Result := Result + TMySQLConnection.QuoteIdent(Columns[i]) + ', ';
if Columns.Count > 0 then Delete(Result, Length(Result)-1, 2);