1. 使用RowFilter对行键进行过滤,显示行键前缀为0开头的键值对; 2. 使用RowFilter对行键进行过滤,显示行键字节顺序大于002的键值对; 3. 扫描显示行键001到002范围内的键值对; 4. 使用FamilyFilter针对列族进行比较和过滤,显示列族前缀为stu开头的键值对; 5. 使用QualifierFilter显示列名为name的记录; 6. 使用ValueFilter针对值进行过滤,查询值等于19的所有键值对;
时间: 2024-03-27 14:37:36 浏览: 203
好的,我明白了。以下是对应的HBase查询语句:
1. 使用RowFilter过滤行键前缀为0开头的键值对:
```
Scan scan = new Scan();
RowFilter filter = new RowPrefixFilter(Bytes.toBytes("0"));
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan);
```
2. 使用RowFilter过滤行键字节顺序大于002的键值对:
```
Scan scan = new Scan();
RowFilter filter = new RowFilter(CompareOperator.GREATER, new BinaryComparator(Bytes.toBytes("002")));
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan);
```
3. 扫描显示行键001到002范围内的键值对:
```
Scan scan = new Scan(Bytes.toBytes("001"), Bytes.toBytes("002"));
ResultScanner scanner = table.getScanner(scan);
```
4. 使用FamilyFilter针对列族进行比较和过滤,显示列族前缀为stu开头的键值对:
```
Scan scan = new Scan();
FamilyFilter filter = new FamilyFilter(CompareOperator.EQUAL, new BinaryPrefixComparator(Bytes.toBytes("stu")));
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan);
```
5. 使用QualifierFilter显示列名为name的记录:
```
Scan scan = new Scan();
QualifierFilter filter = new QualifierFilter(CompareOperator.EQUAL, new BinaryComparator(Bytes.toBytes("name")));
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan);
```
6. 使用ValueFilter针对值进行过滤,查询值等于19的所有键值对:
```
Scan scan = new Scan();
ValueFilter filter = new ValueFilter(CompareOperator.EQUAL, new BinaryComparator(Bytes.toBytes("19")));
scan.setFilter(filter);
ResultScanner scanner = table.getScanner(scan);
```
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