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add range condition #24

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add range condition #24

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5 changes: 3 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -183,14 +183,15 @@ let rows = yield db.select('table-name');
```js
let rows = yield db.select('table-name', {
where: {
type: 'javascript'
type: 'javascript',
date: [{ op: '>=', value: '20170504'}]
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date: { op: '>=', value: '20170504'}

这样会更好吧，可以参考一下业务关于 where 的 api 实现。

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@dead-horse @coolme200 对于 api 有什么好建议吗？

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这里用数组的考虑是什么？

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date >= 100 AND date <= 200 这种需求么？

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对，就是这个需求。

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最好也支持只传一个 object 的场景吧 date: { op: '>=', value: '20170504'}

},
columns: ['author', 'title'],
orders: [['id', 'desc']]
});

=> SELECT `author`, `title` FROM `table-name`
WHERE `type` = 'javascript' ORDER BY `id` DESC
WHERE `type` = 'javascript' AND `date` >= '20170504' ORDER BY `id` DESC
```

### Delete
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17 changes: 13 additions & 4 deletions lib/operator.js
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Expand Up @@ -191,18 +191,27 @@ proto._where = function(where) {
for (const key in where) {
const value = where[key];
if (Array.isArray(value)) {
wheres.push('?? IN (?)');
if (value.length > 0 && typeof value[0] === 'object') {
for (let i = 0; i < value.length; i++) {
wheres.push('?? ' + value[i].op + ' ?');
values.push(key);
values.push(value[i].value);
}
} else {
wheres.push('?? IN (?)');
values.push(key);
values.push(value);
}
} else {
wheres.push('?? = ?');
values.push(key);
values.push(value);
}
values.push(key);
values.push(value);
}
if (wheres.length > 0) {
return this.format(' WHERE ' + wheres.join(' AND '), values);
}
return '';

};

proto._selectColumns = function(table, columns) {
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