issue_comments

With SQLITE_MAX_VARS = 999, or even 899, This hits the problem with the batch rows causing a overflow (works fine if SQLITE_MAX_VARS = 799).

p.s. I have tried a few list of dicts to sqlite modules and this was the easiest to use/understand

------------- file begins ------------------ import sqlite_utils as su

data = [ {'tickerId': 913324382, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'CONSTELLATION B', 'symbol': 'STZ B', 'disSymbol': 'STZ-B', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'status': 'D', 'close': '163.13', 'change': '6.46', 'changeRatio': '0.0412', 'marketValue': '31180699895.63', 'volume': '417', 'turnoverRate': '0.0000'}, {'tickerId': 913323791, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Molina Health', 'symbol': 'MOH', 'disSymbol': 'MOH', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '173.25', 'change': '9.28', 'changeRatio': '0.0566', 'pPrice': '173.25', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '10520341695.50', 'volume': '1281557', 'turnoverRate': '0.0202'}, {'tickerId': 913257501, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Seattle Genetics', 'symbol': 'SGEN', 'disSymbol': 'SGEN', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '145.64', 'change': '8.41', 'changeRatio': '0.0613', 'pPrice': '146.45', 'pChange': '0.8100', 'pChRatio': '0.0056', 'marketValue': '25117961347.60', 'volume': '2791411', 'turnoverRate': '0.0162'}, {'tickerId': 925381971, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Bandwidth', 'symbol': 'BAND', 'disSymbol': 'BAND', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '89.22', 'change': '7.66', 'changeRatio': '0.0939', 'pPrice': '89.00', 'pChange': '-0.2200', 'pChRatio': '-0.0025', 'marketValue': '2100025474.98', 'volume': '1508629', 'turnoverRate': '0.0641'}, {'tickerId': 913323935, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Magellan Health', 'symbol': 'MGLN', 'disSymbol': 'MGLN', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '68.00', 'change': '7.27', 'changeRatio': '0.1197', 'pPrice': '68.00', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '1697894040.00', 'volume': '448919', 'turnoverRate': '0.0180'}, {'tickerId': 913254854, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'On Assignment', 'symbol': 'ASGN', 'disSymbol': 'ASGN', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '53.04', 'change': '6.59', 'changeRatio': '0.1419', 'pPrice': '53.04', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '2811120000.00', 'volume': '1339771', 'turnoverRate': '0.0253'}, {'tickerId': 913255732, 'exchangeId': 95, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Arcturus', 'symbol': 'ARCT', 'disSymbol': 'ARCT', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NMS', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '40.86', 'change': '6.36', 'changeRatio': '0.1843', 'pPrice': '42.60', 'pChange': '1.740', 'pChRatio': '0.0426', 'marketValue': '812021444.46', 'volume': '1577508', 'turnoverRate': '0.0794'}, {'tickerId': 913256616, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'DexCom', 'symbol': 'DXCM', 'disSymbol': 'DXCM', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '341.52', 'change': '6.32', 'changeRatio': '0.0189', 'pPrice': '340.00', 'pChange': '-1.5200', 'pChRatio': '-0.0045', 'marketValue': '31522296000.00', 'volume': '1008849', 'turnoverRate': '0.0109'}, {'tickerId': 913255108, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Clorox', 'symbol': 'CLX', 'disSymbol': 'CLX', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '192.71', 'change': '6.27', 'changeRatio': '0.0336', 'pPrice': '192.95', 'pChange': '0.2400', 'pChRatio': '0.0012', 'marketValue': '24185773318.28', 'volume': '4996414', 'turnoverRate': '0.0398'}, {'tickerId': 925314627, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'FRANCO NEVADA', 'symbol': 'FNV', 'disSymbol': 'FNV', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '137.85', 'change': '5.64', 'changeRatio': '0.0427', 'pPrice': '138.50', 'pChange': '0.6500', 'pChRatio': '0.0047', 'marketValue': '26110405326.30', 'volume': '1047688', 'turnoverRate': '0.0055'}, {'tickerId': 913254955, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Aon Plc', 'symbol': 'AON', 'disSymbol': 'AON', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '178.21', 'change': '5.54', 'changeRatio': '0.0321', 'pPrice': '178.21', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '41181209117.22', 'volume': '2026234', 'turnoverRate': '0.0088'}, {'tickerId': 913324105, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Willis Towers', 'symbol': 'WLTW', 'disSymbol': 'WLTW', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '183.34', 'change': '5.05', 'changeRatio': '0.0283', 'pPrice': '183.34', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '23597461124.96', 'volume': '968943', 'turnoverRate': '0.0075'}, {'tickerId': 913254759, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'TELADOC HEALTH', 'symbol': 'TDOC', 'disSymbol': 'TDOC', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '169.43', 'change': '4.84', 'changeRatio': '0.0294', 'pPrice': '168.88', 'pChange': '-0.5500', 'pChRatio': '-0.0032', 'marketValue': '12614616858.38', 'volume': '2628946', 'turnoverRate': '0.0353'}, {'tickerId': 913255222, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Emergent Bio', 'symbol': 'EBS', 'disSymbol': 'EBS', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '78.70', 'change': '4.75', 'changeRatio': '0.0642', 'pPrice': '78.40', 'pChange': '-0.3000', 'pChRatio': '-0.0038', 'marketValue': '4113368277.10', 'volume': '783804', 'turnoverRate': '0.0150'}, {'tickerId': 913323443, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Pool', 'symbol': 'POOL', 'disSymbol': 'POOL', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '216.02', 'change': '4.36', 'changeRatio': '0.0206', 'pPrice': '216.02', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '8696077573.82', 'volume': '310837', 'turnoverRate': '0.0077'}, {'tickerId': 913257075, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Masimo', 'symbol': 'MASI', 'disSymbol': 'MASI', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '218.00', 'change': '4.09', 'changeRatio': '0.0191', 'pPrice': '217.00', 'pChange': '-1.0000', 'pChRatio': '-0.0046', 'marketValue': '11797070000.00', 'volume': '542131', 'turnoverRate': '0.0100'}, {'tickerId': 913253761, 'exchangeId': 10, 'type': 2, 'secType': [62], 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Pope Resources', 'symbol': 'POPE', 'disSymbol': 'POPE', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NAS', 'listStatus': 1, 'template': 'stock', 'status': 'D', 'close': '101.05', 'change': '3.95', 'changeRatio': '0.0407', 'pPrice': '99.90', 'pChange': '2.800', 'pChRatio': '0.0288', 'marketValue': '447370075.75', 'volume': '33138', 'turnoverRate': '0.0075'}, {'tickerId': 913323560, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Seneca Foods', 'symbol': 'SENEB', 'disSymbol': 'SENEB', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'status': 'D', 'close': '40.04', 'change': '3.84', 'changeRatio': '0.1061', 'marketValue': '347950039.71', 'volume': '501'}, {'tickerId': 913324274, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Resmed', 'symbol': 'RMD', 'disSymbol': 'RMD', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '159.07', 'change': '3.75', 'changeRatio': '0.0241', 'pPrice': '159.07', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '23004217759.29', 'volume': '1267075', 'turnoverRate': '0.0088'}, {'tickerId': 913323736, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Vertex Pharms', 'symbol': 'VRTX', 'disSymbol': 'VRTX', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '254.90', 'change': '3.70', 'changeRatio': '0.0147', 'pPrice': '255.00', 'pChange': '0.1000', 'pChRatio': '0.0004', 'marketValue': '66062980780.10', 'volume': '1939843', 'turnoverRate': '0.0075'}, {'tickerId': 913323767, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'MCCORMICK VTG', 'symbol': 'MKC V', 'disSymbol': 'MKC-V', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'status': 'D', 'close': '159.99', 'change': '3.42', 'changeRatio': '0.0218', 'marketValue': '21262671000.00', 'volume': '432', 'turnoverRate': '0.0000'}, {'tickerId': 950118595, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'ZOOM VIDEO', 'symbol': 'ZM', 'disSymbol': 'ZM', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '138.56', 'change': '3.39', 'changeRatio': '0.0251', 'pPrice': '138.99', 'pChange': '0.4300', 'pChRatio': '0.0031', 'marketValue': '38620532420.16', 'volume': '13786017', 'turnoverRate': '0.0495'}, {'tickerId': 916040738, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'WHEATON PRECIOUS', 'symbol': 'WPM', 'disSymbol': 'WPM', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '41.10', 'change': '3.34', 'changeRatio': '0.0885', 'pPrice': '41.09', 'pChange': '-0.0100', 'pChRatio': '-0.0002', 'marketValue': '18404536146.30', 'volume': '5019137', 'turnoverRate': '0.0112'}, {'tickerId': 913257174, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Royal Gold', 'symbol': 'RGLD', 'disSymbol': 'RGLD', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '125.86', 'change': '3.33', 'changeRatio': '0.0272', 'pPrice': '125.86', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '8253015011.08', 'volume': '853473', 'turnoverRate': '0.0130'}, {'tickerId': 913254394, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Fortune Brand', 'symbol': 'FBHS', 'disSymbol': 'FBHS', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '51.50', 'change': '3.30', 'changeRatio': '0.0685', 'pPrice': '51.50', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '7194870278.50', 'volume': '3004021', 'turnoverRate': '0.0214'}, {'tickerId': 913323312, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Liberty Global', 'symbol': 'LBTYK', 'disSymbol': 'LBTYK', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '21.49', 'change': '3.18', 'changeRatio': '0.1737', 'pPrice': '21.48', 'pChange': '-0.0100', 'pChRatio': '-0.0005', 'marketValue': '13594662302.41', 'volume': '19980228', 'turnoverRate': '0.0315'}, {'tickerId': 913323882, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Preformed Line', 'symbol': 'PLPC', 'disSymbol': 'PLPC', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'status': 'D', 'close': '52.82', 'change': '3.14', 'changeRatio': '0.0632', 'pPrice': '52.10', 'pChange': '-0.7200', 'pChRatio': '-0.0136', 'marketValue': '264979981.20', 'volume': '9305', 'turnoverRate': '0.0018'}, {'tickerId': 913323248, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Discovery', 'symbol': 'DISCB', 'disSymbol': 'DISCB', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'status': 'A', 'close': '57.95', 'change': '23.63', 'changeRatio': '0.6884', 'pPrice': '54.26', 'pChange': '-3.6900', 'pChRatio': '-0.0637', 'marketValue': '29362894177.95', 'volume': '218305', 'turnoverRate': '0.0004'}, {'tickerId': 913323930, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'MercadoLibre', 'symbol': 'MELI', 'disSymbol': 'MELI', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '605.52', 'change': '22.01', 'changeRatio': '0.0377', 'pPrice': '603.69', 'pChange': '-1.8300', 'pChRatio': '-0.0030', 'marketValue': '30226598045.28', 'volume': '699008', 'turnoverRate': '0.0140'}, {'tickerId': 913257170, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Liberty Global', 'symbol': 'LBTYA', 'disSymbol': 'LBTYA', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '22.28', 'change': '2.86', 'changeRatio': '0.1473', 'pPrice': '22.29', 'pChange': '0.0100', 'pChRatio': '0.0004', 'marketValue': '14094419548.52', 'volume': '10534672', 'turnoverRate': '0.0167'}, {'tickerId': 913303991, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Liberty Brodband', 'symbol': 'LBRDK', 'disSymbol': 'LBRDK', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '125.44', 'change': '2.76', 'changeRatio': '0.0225', 'pPrice': '125.44', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '22817900904.96', 'volume': '926177', 'turnoverRate': '0.0042'}, {'tickerId': 913257082, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Helen of Troy', 'symbol': 'HELE', 'disSymbol': 'HELE', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '167.04', 'change': '2.76', 'changeRatio': '0.0168', 'pPrice': '167.04', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '4216707982.08', 'volume': '341465', 'turnoverRate': '0.0135'}, {'tickerId': 913256458, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Forrester', 'symbol': 'FORR', 'disSymbol': 'FORR', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '33.88', 'change': '2.58', 'changeRatio': '0.0824', 'marketValue': '635419400.00', 'volume': '85115', 'turnoverRate': '0.0045'}, {'tickerId': 950158952, 'exchangeId': 95, 'type': 2, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'LYRA THERAPEUTICS, INC.', 'symbol': 'LYRA', 'disSymbol': 'LYRA', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NMS', 'listStatus': 1, 'template': 'ipo', 'status': 'A', 'close': '18.56', 'change': '2.56', 'changeRatio': '0.1600', 'pPrice': '18.96', 'pChange': '0.4000', 'pChRatio': '0.0216', 'marketValue': '229705575.68', 'volume': '1738472', 'turnoverRate': '0.1405'}, {'tickerId': 913257570, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Bio-Techne', 'symbol': 'TECH', 'disSymbol': 'TECH', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '227.54', 'change': '2.54', 'changeRatio': '0.0113', 'pPrice': '227.54', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '8726538309.18', 'volume': '497006', 'turnoverRate': '0.0130'}, {'tickerId': 913323246, 'exchangeId': 96, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Bel Fuse', 'symbol': 'BELFB', 'disSymbol': 'BELFB', 'disExchangeCode': 'NASDAQ', 'exchangeCode': 'NSQ', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '9.99', 'change': '2.53', 'changeRatio': '0.3391', 'pPrice': '9.75', 'pChange': '-0.2400', 'pChRatio': '-0.0240', 'marketValue': '122562454.86', 'volume': '177634', 'turnoverRate': '0.0145'}, {'tickerId': 916040647, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Agnico Eagle', 'symbol': 'AEM', 'disSymbol': 'AEM', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '61.20', 'change': '2.52', 'changeRatio': '0.0429', 'pPrice': '61.10', 'pChange': '-0.1000', 'pChRatio': '-0.0016', 'marketValue': '14739911553.60', 'volume': '2820765', 'turnoverRate': '0.0117'}, {'tickerId': 913303768, 'exchangeId': 12, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'CHASE CORP', 'symbol': 'CCF', 'disSymbol': 'CCF', 'disExchangeCode': 'AMEX', 'exchangeCode': 'ASE', 'listStatus': 1, 'template': 'stock', 'status': 'D', 'close': '96.71', 'change': '2.45', 'changeRatio': '0.0260', 'marketValue': '916799598.60', 'volume': '29229', 'turnoverRate': '0.0031'}, {'tickerId': 913324557, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'Allergan', 'symbol': 'AGN', 'disSymbol': 'AGN', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'A', 'close': '189.74', 'change': '2.40', 'changeRatio': '0.0128', 'pPrice': '189.76', 'pChange': '0.0200', 'pChRatio': '0.0001', 'marketValue': '62424842326.10', 'volume': '5787032', 'turnoverRate': '0.0176'}, {'tickerId': 913324566, 'exchangeId': 11, 'type': 2, 'secType': 61, 'regionId': 6, 'regionCode': 'US', 'currencyId': 247, 'name': 'West Pharm Svc', 'symbol': 'WST', 'disSymbol': 'WST', 'disExchangeCode': 'NYSE', 'exchangeCode': 'NYSE', 'listStatus': 1, 'template': 'stock', 'derivativeSupport': 1, 'status': 'D', 'close': '191.64', 'change': '2.38', 'changeRatio': '0.0126', 'pPrice': '191.64', 'pChange': '0.0000', 'pChRatio': '0.0000', 'marketValue': '14078267117.08', 'volume': '352460', 'turnoverRate': '0.0042'} ]

db = su.Database(f"overnight hold.db" ) db['active'].insert_all(data)

--------------- file ends ----------------------

This is my failed attempt to recreate the bug (plus some extra debugging output): ```diff % git diff diff --git a/sqlite_utils/db.py b/sqlite_utils/db.py index dd49d5c..ea42aea 100644 --- a/sqlite_utils/db.py +++ b/sqlite_utils/db.py @@ -1013,7 +1013,11 @@ class Table(Queryable): assert ( num_columns <= SQLITE_MAX_VARS ), "Rows can have a maximum of {} columns".format(SQLITE_MAX_VARS) + print("default batch_size = ", batch_size) batch_size = max(1, min(batch_size, SQLITE_MAX_VARS // num_columns)) + print("new batch_size = {},num_columns = {}, MAX_VARS // num_columns = {}".format( + batch_size, num_columns, SQLITE_MAX_VARS // num_columns + )) self.last_rowid = None self.last_pk = None for chunk in chunks(itertools.chain([first_record], records), batch_size): @@ -1124,6 +1128,9 @@ class Table(Queryable): ) flat_values = list(itertools.chain(*values)) queries_and_params = [(sql, flat_values)] + print(sql.count("?"), len(flat_values)) + + # print(json.dumps(queries_and_params, indent=4))

         with self.db.conn:
             for query, params in queries_and_params:

diff --git a/tests/test_create.py b/tests/test_create.py index 5290cd8..52940df 100644 --- a/tests/test_create.py +++ b/tests/test_create.py @@ -853,3 +853,33 @@ def test_create_with_nested_bytes(fresh_db): record = {"id": 1, "data": {"foo": b"bytes"}} fresh_db["t"].insert(record) assert [{"id": 1, "data": '{"foo": "b\'bytes\'"}'}] == list(fresh_db["t"].rows) + + +def test_create_throws_useful_error_with_increasing_number_of_columns(fresh_db): + # https://github.com/simonw/sqlite-utils/issues/103 + def rows(): + yield {"name": 0} + for i in range(1, 1001): + yield { + "name": i, + "age": i, + "size": i, + "name2": i, + "age2": i, + "size2": i, + "name3": i, + "age3": i, + "size3": i, + "name4": i, + "age4": i, + "size4": i, + "name5": i, + "age5": i, + "size5": i, + "name6": i, + "age6": i, + "size6": i, + } + + fresh_db["t"].insert_all(rows()) + assert 1001 == fresh_db["t"].count ```

@b0b5h4rp13 I'm having trouble creating a test that triggers this bug. Could you share a chunk of code that replicates what you're seeing here?

I'm reconsidering this: I think this is going to happen ANY time someone has at least one row that is wider than the first row. So at the very least I should show a more understandable error message.

Hopefully anyone who runs into this problem in the future will search for and find this issue thread!

I'm not sure what to do about this.

I was thinking the solution would be to look at ALL of the rows in a batch before deciding on the maximum number of columns, but that doesn't work because we calculate batch size based on the number of columns!

I think my recommendation here is to manually pass a batch_size= argument to .insert_all() if you run into this error.

Yup we only take the number of columns in the first record into account at the moment: https://github.com/simonw/sqlite-utils/blob/d56029549acae0b0ea94c5a0f783e3b3895d9218/sqlite_utils/db.py#L1007-L1016

The varying number of columns thing is interesting - I don't think the tests cover that case much if at all.