我想选择下面表格X的第一行,并将“name”列更新为“53656C696E613333”,如下所示。 Sqlite一直在说语法错误。有人可以帮忙解决这个问题吗?非常感谢!
function findSelectedMap(mapID, cb) {
$.getJSON('maps.json', function (json) {
json.forEach(function (entry) {
if (entry.maps.id == mapID) {
changeLayerTo = entry.maps.url;
maxZoom = entry.maps.zoom;
} // end if
}); // end json.forEach
cb();
}); // end $.getJSON
} // end findSelectedMap
function overlaySelector() {
$("#select-overlay").change(function () {
mapID = $("#select-overlay input[type='radio']:checked").val();
findSelectedMap(mapID, function() {
currentLayer = L.tileLayer(changeLayerTo).addTo(map);
}); // using mapID, find the url, zoom for overlayMap selected
// more map stuff
}); // end $( "#select-overlay" ).
} // end overlaySelector function
答案 0 :(得分:1)
我想你可能想要这样的东西: -
UPDATE Ages
SET name = '53656C696E613333'
WHERE name = (SELECT name FROM Ages ORDER BY hex(name||age) LIMIT(1))
AND age = (SELECT age FROM Ages ORDER BY hex(name||age) LIMIT(1))
;
代替: -
SELECT hex (name||age) AS X FROM Ages ORDER BY X
SELECT * FROM X LIMIT 1
UPDATE X SET name = '53656C696E613333'
这将导致: -
但是,由于您尚未为表格指定WITHOUT ROWID
,因此您可以使用更简单的方法: -
UPDATE Ages
SET name = '53656C696E613333'
WHERE rowid = (SELECT rowid FROM Ages ORDER BY hex(name||age) LIMIT(1))
;