Skip to content

U
uni-app

CoderSmallfan / uni-app
与 Fork 源项目一致

Fork自 DCloud / uni-app

通知 1
Star 1
Fork 0
U
uni-app

体验新版 GitCode，发现更多精彩内容 >>

提交 a4e65530 编写于 作者: 雪洛's avatar 雪洛
浏览文件
操作

docs: uniCloud clientDB

上级 68589d1d
隐藏空白更改
内联 并排
Showing with 165 addition and 96 deletion
docs/uniCloud/clientdb.md
浏览文件 @ a4e65530
......@@ -1402,6 +1402,75 @@ const res = await db.collection('score')
}
```
**更复杂一些的用法**
假设`uni-id-users`内有以下数据
```js
{
"_id": "1",
"username": "name1",
"register_date": 1611367810000 // 2021-01-23 10:10:10
}
{
"_id": "2",
"username": "name2",
"register_date": 1611367810000 // 2021-01-23 10:10:10
}
{
"_id": "3",
"username": "name3",
"register_date": 1611367810000 // 2021-01-23 10:10:10
}
{
"_id": "4",
"username": "name4",
"register_date": 1611281410000 // 2021-01-22 10:10:10
}
{
"_id": "5",
"username": "name5",
"register_date": 1611281410000 // 2021-01-22 10:10:10
}
{
"_id": "6",
"username": "name6",
"register_date": 1611195010000 // 2021-01-21 10:10:10
}
```
以下用法使用add操作符将register_date转化为日期类型，再使用dateToString将add得到的日期格式化为形如`2021-01-21`的字符串，然后根据此字符串进行分组统计，得到每天注册用户量
add操作符的用法为`add(值1,值2)`
dateToString操作符的用法为`dateToString(日期对象,格式化字符串,时区)`
完整操作符列表请参考：[clientDB内可使用的聚合操作符](uniCloud/clientdb.md?id=aggregate-operator)
```js
const res = await db.collection('uni-id-users')
.groupBy('dateToString(add(new Date(0),register_date),"%Y-%m-%d","+0800") as date')
.groupField('count(*) as total')
.get()
// 返回结果
res = {
result: {
data: [{
date: '2021-01-23',
total: 3
},{
date: '2021-01-22',
total: 2
},{
date: '2021-01-21',
total: 1
}]
}
}
```
**注意**
- `count(*)`为固定写法，*可以省略
......@@ -2277,102 +2346,102 @@ module.exports = {
## 可用聚合操作符列表@aggregate-operator
为方便书写，clientDB内将聚合操作符的用法进行了简化（相对于云函数内使用聚合操作符而言）。以下是可以在clientDB中使用的聚合操作符
|操作符 |详细文档 |用法 |说明 |
|--- |--- |--- |--- |
|abs |[abs](uniCloud/cf-database.md?id=abs) |abs(<表达式>) |- |
|add |[add](uniCloud/cf-database.md?id=add-1) |add(<表达式1>,<表达式2>) |- |
|ceil |[ceil](uniCloud/cf-database.md?id=ceil) |ceil(<表达式>) |- |
|divide |[divide](uniCloud/cf-database.md?id=divide) |divide(<表达式1>,<表达式2>) |- |
|exp |[exp](uniCloud/cf-database.md?id=exp) |exp(<表达式>) |- |
|floor |[floor](uniCloud/cf-database.md?id=floor) |floor(<表达式>) |- |
|ln |[ln](uniCloud/cf-database.md?id=ln) |ln(<表达式>) |- |
|log |[log](uniCloud/cf-database.md?id=log) |log(<表达式1>,<表达式2>) |- |
|log10 |[log10](uniCloud/cf-database.md?id=log10) |log10(<表达式>) |- |
|mod |[mod](uniCloud/cf-database.md?id=mod) |mod(<表达式1>,<表达式2>) |- |
|multiply |[multiply](uniCloud/cf-database.md?id=multiply) |multiply(<表达式1>,<表达式2>) |- |
|pow |[pow](uniCloud/cf-database.md?id=pow) |pow(<表达式1>,<表达式2>) |- |
|sqrt |[sqrt](uniCloud/cf-database.md?id=sqrt) |sqrt(<表达式1>,<表达式2>) |- |
|subtract |[subtract](uniCloud/cf-database.md?id=subtract) |subtract(<表达式1>,<表达式2>) |- |
|trunc |[trunc](uniCloud/cf-database.md?id=trunc) |trunc(<表达式>) |- |
|arrayElemAt |[arrayElemAt](uniCloud/cf-database.md?id=arrayelemat) |arrayElemAt(<表达式1>,<表达式2>) |- |
|arrayToObject |[arrayToObject](uniCloud/cf-database.md?id=arraytoobject) |arrayToObject(<表达式>) |- |
|concatArrays |[concatArrays](uniCloud/cf-database.md?id=concatarrays) |concatArrays(<表达式1>,<表达式2>) |- |
|filter |[filter](uniCloud/cf-database.md?id=filter) |filter(<input>,<as>,<cond>) |- |
|in |[in](uniCloud/cf-database.md?id=in) |in(<表达式1>,<表达式2>) |- |
|indexOfArray |[indexOfArray](uniCloud/cf-database.md?id=indexofarray) |indexOfArray(<表达式1>,<表达式2>) |- |
|isArray |[isArray](uniCloud/cf-database.md?id=isarray) |isArray(<表达式>) |- |
|map |[map](uniCloud/cf-database.md?id=map) |map(<input>,<as>,<in>) |- |
|objectToArray |[objectToArray](uniCloud/cf-database.md?id=objecttoarray) |objectToArray(<表达式>) |- |
|range |[range](uniCloud/cf-database.md?id=range) |range(<表达式1>,<表达式2>) |- |
|reduce |[reduce](uniCloud/cf-database.md?id=reduce) |reduce(<input>,<initialValue>,<in>) |- |
|reverseArray |[reverseArray](uniCloud/cf-database.md?id=reversearray) |reverseArray(<表达式>) |- |
|size |[size](uniCloud/cf-database.md?id=size) |size(<表达式>) |- |
|slice |[slice](uniCloud/cf-database.md?id=slice) |slice(<表达式1>,<表达式2>) |- |
|zip |[zip](uniCloud/cf-database.md?id=zip) |zip(<inputs>,<useLongestLength>,<defaults>) |- |
|and |[and](uniCloud/cf-database.md?id=and) |and(<表达式1>,<表达式2>) |- |
|not |[not](uniCloud/cf-database.md?id=not) |not(<表达式>) |- |
|or |[or](uniCloud/cf-database.md?id=or) |or(<表达式1>,<表达式2>) |- |
|cmp |[cmp](uniCloud/cf-database.md?id=cmp) |cmp(<表达式1>,<表达式2>) |- |
|eq |[eq](uniCloud/cf-database.md?id=eq) |eq(<表达式1>,<表达式2>) |- |
|gt |[gt](uniCloud/cf-database.md?id=gt) |gt(<表达式1>,<表达式2>) |- |
|gte |[gte](uniCloud/cf-database.md?id=gte) |gte(<表达式1>,<表达式2>) |- |
|lt |[lt](uniCloud/cf-database.md?id=lt) |lt(<表达式1>,<表达式2>) |- |
|lte |[lte](uniCloud/cf-database.md?id=lte) |lte(<表达式1>,<表达式2>) |- |
|neq |[neq](uniCloud/cf-database.md?id=neq) |neq(<表达式1>,<表达式2>) |- |
|cond |[cond](uniCloud/cf-database.md?id=cond) |cond(<表达式1>,<表达式2>) |- |
|ifNull |[ifNull](uniCloud/cf-database.md?id=ifnull) |ifNull(<表达式1>,<表达式2>) |- |
|switch |[switch](uniCloud/cf-database.md?id=switch) |switch(<branches>,<default>) |- |
|dateFromParts |[dateFromParts](uniCloud/cf-database.md?id=datefromparts) |dateFromParts(<year>,<month>,<day>,<hour>,<minute>,<second>,<millisecond>,<timezone>) |- |
|isoDateFromParts |[isoDateFromParts](uniCloud/cf-database.md?id=isodatefromparts)|isoDateFromParts(<isoWeekYear>,<isoWeek>,<isoDayOfWeek>,<hour>,<minute>,<second>,<millisecond>,<timezone>) |云函数内此操作符对应dateFromParts|
|dateFromString |[dateFromString](uniCloud/cf-database.md?id=datefromstring) |dateFromString(<dateString>,<format>,<timezone>,<onError>,<onNull>) |- |
|dateToString |[dateToString](uniCloud/cf-database.md?id=datetostring) |dateToString(<date>,<format>,<timezone>,<onNull>) |- |
|dayOfMonth |[dayOfMonth](uniCloud/cf-database.md?id=dayofmonth) |dayOfMonth(<date>,<timezone>) |- |
|dayOfWeek |[dayOfWeek](uniCloud/cf-database.md?id=dayofweek) |dayOfWeek(<date>,<timezone>) |- |
|dayOfYear |[dayOfYear](uniCloud/cf-database.md?id=dayofyear) |dayOfYear(<date>,<timezone>) |- |
|hour |[hour](uniCloud/cf-database.md?id=hour) |hour(<date>,<timezone>) |- |
|isoDayOfWeek |[isoDayOfWeek](uniCloud/cf-database.md?id=isodayofweek) |isoDayOfWeek(<date>,<timezone>) |- |
|isoWeek |[isoWeek](uniCloud/cf-database.md?id=isoweek) |isoWeek(<date>,<timezone>) |- |
|isoWeekYear |[isoWeekYear](uniCloud/cf-database.md?id=isoweekyear) |isoWeekYear(<date>,<timezone>) |- |
|millisecond |[millisecond](uniCloud/cf-database.md?id=millisecond) |millisecond(<date>,<timezone>) |- |
|minute |[minute](uniCloud/cf-database.md?id=minute) |minute(<date>,<timezone>) |- |
|month |[month](uniCloud/cf-database.md?id=month) |month(<date>,<timezone>) |- |
|second |[second](uniCloud/cf-database.md?id=second) |second(<date>,<timezone>) |- |
|week |[week](uniCloud/cf-database.md?id=week) |week(<date>,<timezone>) |- |
|year |[year](uniCloud/cf-database.md?id=year) |year(<date>,<timezone>) |- |
|literal |[literal](uniCloud/cf-database.md?id=literal) |literal(<表达式>) |- |
|mergeObjects |[mergeObjects](uniCloud/cf-database.md?id=mergeobjects) |mergeObjects(<表达式1>,<表达式2>) |- |
|allElementsTrue |[allElementsTrue](uniCloud/cf-database.md?id=allelementstrue) |allElementsTrue(<表达式1>,<表达式2>) |- |
|anyElementTrue |[anyElementTrue](uniCloud/cf-database.md?id=anyelementtrue) |anyElementTrue(<表达式1>,<表达式2>) |- |
|setDifference |[setDifference](uniCloud/cf-database.md?id=setdifference) |setDifference(<表达式1>,<表达式2>) |- |
|setEquals |[setEquals](uniCloud/cf-database.md?id=setequals) |setEquals(<表达式1>,<表达式2>) |- |
|setIntersection |[setIntersection](uniCloud/cf-database.md?id=setintersection) |setIntersection(<表达式1>,<表达式2>) |- |
|setIsSubset |[setIsSubset](uniCloud/cf-database.md?id=setissubset) |setIsSubset(<表达式1>,<表达式2>) |- |
|setUnion |[setUnion](uniCloud/cf-database.md?id=setunion) |setUnion(<表达式1>,<表达式2>) |- |
|concat |[concat](uniCloud/cf-database.md?id=concat) |concat(<表达式1>,<表达式2>) |- |
|indexOfBytes |[indexOfBytes](uniCloud/cf-database.md?id=indexofbytes) |indexOfBytes(<表达式1>,<表达式2>) |- |
|indexOfCP |[indexOfCP](uniCloud/cf-database.md?id=indexofcp) |indexOfCP(<表达式1>,<表达式2>) |- |
|split |[split](uniCloud/cf-database.md?id=split) |split(<表达式1>,<表达式2>) |- |
|strLenBytes |[strLenBytes](uniCloud/cf-database.md?id=strlenbytes) |strLenBytes(<表达式>) |- |
|strLenCP |[strLenCP](uniCloud/cf-database.md?id=strlencp) |strLenCP(<表达式>) |- |
|strcasecmp |[strcasecmp](uniCloud/cf-database.md?id=strcasecmp) |strcasecmp(<表达式1>,<表达式2>) |- |
|substr |[substr](uniCloud/cf-database.md?id=substr) |substr(<表达式1>,<表达式2>) |- |
|substrBytes |[substrBytes](uniCloud/cf-database.md?id=substrbytes) |substrBytes(<表达式1>,<表达式2>) |- |
|substrCP |[substrCP](uniCloud/cf-database.md?id=substrcp) |substrCP(<表达式1>,<表达式2>) |- |
|toLower |[toLower](uniCloud/cf-database.md?id=tolower) |toLower(<表达式>) |- |
|toUpper |[toUpper](uniCloud/cf-database.md?id=toupper) |toUpper(<表达式>) |- |
|addToSet |[addToSet](uniCloud/cf-database.md?id=addtoset) |addToSet(<表达式>) |- |
|avg |[avg](uniCloud/cf-database.md?id=avg) |avg(<表达式>) |- |
|first |[first](uniCloud/cf-database.md?id=first) |first(<表达式>) |- |
|last |[last](uniCloud/cf-database.md?id=last) |last(<表达式>) |- |
|max |[max](uniCloud/cf-database.md?id=max) |max(<表达式>) |- |
|min |[min](uniCloud/cf-database.md?id=min) |min(<表达式>) |- |
|push |[push](uniCloud/cf-database.md?id=push) |push(<表达式>) |- |
|stdDevPop |[stdDevPop](uniCloud/cf-database.md?id=stddevpop) |stdDevPop(<表达式>) |- |
|stdDevSamp |[stdDevSamp](uniCloud/cf-database.md?id=stddevsamp) |stdDevSamp(<表达式>) |- |
|sum |[sum](uniCloud/cf-database.md?id=sum) |sum(<表达式>) |- |
|let |[let](uniCloud/cf-database.md?id=let) |let(<vars>,<in>) |- |
为方便书写，clientDB内将聚合操作符的用法进行了简化（相对于云函数内使用聚合操作符而言），主要是参数摊平、。以下是可以在clientDB中使用的聚合操作符
|操作符 |详细文档（云函数内用法） |JQL简化用法 |说明 |
|--- |--- |--- |--- |
|abs |[abs](uniCloud/cf-database.md?id=abs) |abs(表达式) |- |
|add |[add](uniCloud/cf-database.md?id=add-1) |add(表达式1,表达式2) |- |
|ceil |[ceil](uniCloud/cf-database.md?id=ceil) |ceil(表达式) |- |
|divide |[divide](uniCloud/cf-database.md?id=divide) |divide(表达式1,表达式2) |- |
|exp |[exp](uniCloud/cf-database.md?id=exp) |exp(表达式) |- |
|floor |[floor](uniCloud/cf-database.md?id=floor) |floor(表达式) |- |
|ln |[ln](uniCloud/cf-database.md?id=ln) |ln(表达式) |- |
|log |[log](uniCloud/cf-database.md?id=log) |log(表达式1,表达式2) |- |
|log10 |[log10](uniCloud/cf-database.md?id=log10) |log10(表达式) |- |
|mod |[mod](uniCloud/cf-database.md?id=mod) |mod(表达式1,表达式2) |- |
|multiply |[multiply](uniCloud/cf-database.md?id=multiply) |multiply(表达式1,表达式2) |- |
|pow |[pow](uniCloud/cf-database.md?id=pow) |pow(表达式1,表达式2) |- |
|sqrt |[sqrt](uniCloud/cf-database.md?id=sqrt) |sqrt(表达式1,表达式2) |- |
|subtract |[subtract](uniCloud/cf-database.md?id=subtract) |subtract(表达式1,表达式2) |- |
|trunc |[trunc](uniCloud/cf-database.md?id=trunc) |trunc(表达式) |- |
|arrayElemAt |[arrayElemAt](uniCloud/cf-database.md?id=arrayelemat) |arrayElemAt(表达式1,表达式2) |- |
|arrayToObject |[arrayToObject](uniCloud/cf-database.md?id=arraytoobject) |arrayToObject(表达式) |- |
|concatArrays |[concatArrays](uniCloud/cf-database.md?id=concatarrays) |concatArrays(表达式1,表达式2) |- |
|filter |[filter](uniCloud/cf-database.md?id=filter) |filter(input,as,cond) |- |
|in |[in](uniCloud/cf-database.md?id=in) |in(表达式1,表达式2) |- |
|indexOfArray |[indexOfArray](uniCloud/cf-database.md?id=indexofarray) |indexOfArray(表达式1,表达式2) |- |
|isArray |[isArray](uniCloud/cf-database.md?id=isarray) |isArray(表达式) |- |
|map |[map](uniCloud/cf-database.md?id=map) |map(input,as,in) |- |
|objectToArray |[objectToArray](uniCloud/cf-database.md?id=objecttoarray) |objectToArray(表达式) |- |
|range |[range](uniCloud/cf-database.md?id=range) |range(表达式1,表达式2) |- |
|reduce |[reduce](uniCloud/cf-database.md?id=reduce) |reduce(input,initialValue,in) |- |
|reverseArray |[reverseArray](uniCloud/cf-database.md?id=reversearray) |reverseArray(表达式) |- |
|size |[size](uniCloud/cf-database.md?id=size) |size(表达式) |- |
|slice |[slice](uniCloud/cf-database.md?id=slice) |slice(表达式1,表达式2) |- |
|zip |[zip](uniCloud/cf-database.md?id=zip) |zip(inputs,useLongestLength,defaults) |- |
|and |[and](uniCloud/cf-database.md?id=and) |and(表达式1,表达式2) |- |
|not |[not](uniCloud/cf-database.md?id=not) |not(表达式) |- |
|or |[or](uniCloud/cf-database.md?id=or) |or(表达式1,表达式2) |- |
|cmp |[cmp](uniCloud/cf-database.md?id=cmp) |cmp(表达式1,表达式2) |- |
|eq |[eq](uniCloud/cf-database.md?id=eq) |eq(表达式1,表达式2) |- |
|gt |[gt](uniCloud/cf-database.md?id=gt) |gt(表达式1,表达式2) |- |
|gte |[gte](uniCloud/cf-database.md?id=gte) |gte(表达式1,表达式2) |- |
|lt |[lt](uniCloud/cf-database.md?id=lt) |lt(表达式1,表达式2) |- |
|lte |[lte](uniCloud/cf-database.md?id=lte) |lte(表达式1,表达式2) |- |
|neq |[neq](uniCloud/cf-database.md?id=neq) |neq(表达式1,表达式2) |- |
|cond |[cond](uniCloud/cf-database.md?id=cond) |cond(表达式1,表达式2) |- |
|ifNull |[ifNull](uniCloud/cf-database.md?id=ifnull) |ifNull(表达式1,表达式2) |- |
|switch |[switch](uniCloud/cf-database.md?id=switch) |switch(branches,default) |- |
|dateFromParts |[dateFromParts](uniCloud/cf-database.md?id=datefromparts) |dateFromParts(year,month,day,hour,minute,second,millisecond,timezone) |- |
|isoDateFromParts |[isoDateFromParts](uniCloud/cf-database.md?id=isodatefromparts)|isoDateFromParts(isoWeekYear,isoWeek,isoDayOfWeek,hour,minute,second,millisecond,timezone) |云函数内此操作符对应dateFromParts|
|dateFromString |[dateFromString](uniCloud/cf-database.md?id=datefromstring) |dateFromString(dateString,format,timezone,onError,onNull) |- |
|dateToString |[dateToString](uniCloud/cf-database.md?id=datetostring) |dateToString(date,format,timezone,onNull) |- |
|dayOfMonth |[dayOfMonth](uniCloud/cf-database.md?id=dayofmonth) |dayOfMonth(date,timezone) |- |
|dayOfWeek |[dayOfWeek](uniCloud/cf-database.md?id=dayofweek) |dayOfWeek(date,timezone) |- |
|dayOfYear |[dayOfYear](uniCloud/cf-database.md?id=dayofyear) |dayOfYear(date,timezone) |- |
|hour |[hour](uniCloud/cf-database.md?id=hour) |hour(date,timezone) |- |
|isoDayOfWeek |[isoDayOfWeek](uniCloud/cf-database.md?id=isodayofweek) |isoDayOfWeek(date,timezone) |- |
|isoWeek |[isoWeek](uniCloud/cf-database.md?id=isoweek) |isoWeek(date,timezone) |- |
|isoWeekYear |[isoWeekYear](uniCloud/cf-database.md?id=isoweekyear) |isoWeekYear(date,timezone) |- |
|millisecond |[millisecond](uniCloud/cf-database.md?id=millisecond) |millisecond(date,timezone) |- |
|minute |[minute](uniCloud/cf-database.md?id=minute) |minute(date,timezone) |- |
|month |[month](uniCloud/cf-database.md?id=month) |month(date,timezone) |- |
|second |[second](uniCloud/cf-database.md?id=second) |second(date,timezone) |- |
|week |[week](uniCloud/cf-database.md?id=week) |week(date,timezone) |- |
|year |[year](uniCloud/cf-database.md?id=year) |year(date,timezone) |- |
|literal |[literal](uniCloud/cf-database.md?id=literal) |literal(表达式) |- |
|mergeObjects |[mergeObjects](uniCloud/cf-database.md?id=mergeobjects) |mergeObjects(表达式1,表达式2) |- |
|allElementsTrue |[allElementsTrue](uniCloud/cf-database.md?id=allelementstrue) |allElementsTrue(表达式1,表达式2) |- |
|anyElementTrue |[anyElementTrue](uniCloud/cf-database.md?id=anyelementtrue) |anyElementTrue(表达式1,表达式2) |- |
|setDifference |[setDifference](uniCloud/cf-database.md?id=setdifference) |setDifference(表达式1,表达式2) |- |
|setEquals |[setEquals](uniCloud/cf-database.md?id=setequals) |setEquals(表达式1,表达式2) |- |
|setIntersection |[setIntersection](uniCloud/cf-database.md?id=setintersection) |setIntersection(表达式1,表达式2) |- |
|setIsSubset |[setIsSubset](uniCloud/cf-database.md?id=setissubset) |setIsSubset(表达式1,表达式2) |- |
|setUnion |[setUnion](uniCloud/cf-database.md?id=setunion) |setUnion(表达式1,表达式2) |- |
|concat |[concat](uniCloud/cf-database.md?id=concat) |concat(表达式1,表达式2) |- |
|indexOfBytes |[indexOfBytes](uniCloud/cf-database.md?id=indexofbytes) |indexOfBytes(表达式1,表达式2) |- |
|indexOfCP |[indexOfCP](uniCloud/cf-database.md?id=indexofcp) |indexOfCP(表达式1,表达式2) |- |
|split |[split](uniCloud/cf-database.md?id=split) |split(表达式1,表达式2) |- |
|strLenBytes |[strLenBytes](uniCloud/cf-database.md?id=strlenbytes) |strLenBytes(表达式) |- |
|strLenCP |[strLenCP](uniCloud/cf-database.md?id=strlencp) |strLenCP(表达式) |- |
|strcasecmp |[strcasecmp](uniCloud/cf-database.md?id=strcasecmp) |strcasecmp(表达式1,表达式2) |- |
|substr |[substr](uniCloud/cf-database.md?id=substr) |substr(表达式1,表达式2) |- |
|substrBytes |[substrBytes](uniCloud/cf-database.md?id=substrbytes) |substrBytes(表达式1,表达式2) |- |
|substrCP |[substrCP](uniCloud/cf-database.md?id=substrcp) |substrCP(表达式1,表达式2) |- |
|toLower |[toLower](uniCloud/cf-database.md?id=tolower) |toLower(表达式) |- |
|toUpper |[toUpper](uniCloud/cf-database.md?id=toupper) |toUpper(表达式) |- |
|addToSet |[addToSet](uniCloud/cf-database.md?id=addtoset) |addToSet(表达式) |- |
|avg |[avg](uniCloud/cf-database.md?id=avg) |avg(表达式) |- |
|first |[first](uniCloud/cf-database.md?id=first) |first(表达式) |- |
|last |[last](uniCloud/cf-database.md?id=last) |last(表达式) |- |
|max |[max](uniCloud/cf-database.md?id=max) |max(表达式) |- |
|min |[min](uniCloud/cf-database.md?id=min) |min(表达式) |- |
|push |[push](uniCloud/cf-database.md?id=push) |push(表达式) |- |
|stdDevPop |[stdDevPop](uniCloud/cf-database.md?id=stddevpop) |stdDevPop(表达式) |- |
|stdDevSamp |[stdDevSamp](uniCloud/cf-database.md?id=stddevsamp) |stdDevSamp(表达式) |- |
|sum |[sum](uniCloud/cf-database.md?id=sum) |sum(表达式) |- |
|let |[let](uniCloud/cf-database.md?id=let) |let(vars,in) |- |
以上操作符还可以组合使用
......
Markdown is supported
0% 或 .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑！
想要评论请 注册 或