Number of Grabs by Indexer

SELECT
    SUBSTR(DATA, INSTR(DATA, '"indexer": ') + 12, INSTR(SUBSTR(DATA, INSTR(DATA, '"indexer": ') + 12), '",') - 1) AS IndexerName,
    COUNT(*) AS GrabCount
FROM History
WHERE DATA LIKE '%indexer%'
GROUP BY IndexerName
ORDER BY GrabCount DESC