flere MySQL-forespørgsler til en enkelt insert

Prøv at bruge sessionsvariabler eller abstrahere dem til en lagret procedure, noget som -

Først:

SELECT
  @calldate:=`calldate`,
  @peakchan:=MAX(concurrent)+1
FROM (
  ...
) AS baseview
GROUP BY calldate

Andet:

SELECT @longestcall:=MAX(duration) FROM bridgedb.log WHERE `start` >= NOW() - INTERVAL 1 DAY

For det tredje:

SELECT @totalmins:=SUM(duration)  FROM bridgedb.log WHERE `start` >= NOW() - INTERVAL 1 DAY

For det fjerde:

SELECT @totalconfs:=COUNT(*) FROM bridgedb.log WHERE `start` >= NOW() - INTERVAL 1 DAY;

Og endelig

INSERT INTO bridgedb.stats (date, peakchan, longestcall, totalmins, totalconfs)
VALUES (@calldate, @peakchan, @longestcall, @totalmins, @totalconfs)

BTW:Det er ikke en god idé at kalde en kolonne for date .

REDIGER

Selvfølgelig skal du sørge for, at disse forespørgsler kører i samme session for at bruge sessionsvariabler. Dette er standard, når det køres med en enkelt DB-forbindelse i PHP

REDIGERING 2

For at håndtere perioder uden aktivitet kan du

• enten præfiks dette med SELECT @calldate:=DATE(NOW() - INTERVAL 1 DAY), @peakchan:=0, @longestcall:=0, @totalmins:=0, @totalconfs:=0; (optag med oprettede standardindstillinger)
• eller stop efter den første forespørgsel, hvis @calldate er NULL (ingen registrering oprettet)

REDIGERING 3

Dette virker for mig:

DELIMITER //

CREATE PROCEDURE ReportYesterday()
BEGIN
  DECLARE calldate DATE;
  DECLARE peakchan, longestcall, totalmins, totalconfs INT;

SELECT
  @calldate:=`calldate`,
  @peakchan:=MAX(concurrent)+1
FROM (
       SELECT
          DATE(a.calldate) as calldate,
          COUNT(b.uniqueid) AS concurrent
        FROM asteriskcdr.cdr AS a, asteriskcdr.cdr AS b
        WHERE  
          a.calldate >= NOW() - INTERVAL 1 DAY
          AND (
            (a.calldate<=b.calldate AND (UNIX_TIMESTAMP(a.calldate)+a.duration)>=UNIX_TIMESTAMP(b.calldate))
            OR (b.calldate<=a.calldate AND (UNIX_TIMESTAMP(b.calldate)+b.duration)>=UNIX_TIMESTAMP(a.calldate))
          )
          AND a.uniqueid>b.uniqueid
        GROUP BY a.uniqueid) AS baseview
GROUP BY calldate
;

-- EDIT 4 IS THE FOLLOWING LINE 

IF @calldate IS NOT NULL THEN

  SELECT @longestcall:=MAX(duration) FROM bridgedb.log WHERE `start` >= NOW() - INTERVAL 1 DAY
  ;

  SELECT @totalmins:=SUM(duration)  FROM bridgedb.log WHERE `start` >= NOW() - INTERVAL 1 DAY
  ;

  SELECT @totalconfs:=COUNT(*) FROM bridgedb.log WHERE `start` >= NOW() - INTERVAL 1 DAY
  ;

  INSERT INTO bridgedb.stats (date, peakchan, longestcall, totalmins, totalconfs)
  VALUES (@calldate, @peakchan, @longestcall, @totalmins, @totalconfs)
  ;

END IF;

END
;
//

DELIMITER ;

efterfulgt af

CALL ReportYesterday();