Question

如何使用返回记录集的函数运行嵌套查询？

我想要做的是解析TEXT字段并将其拆分为词干。

它应该是这样的

with strings as (
    select text
    from messages
    where channel_id = 12345 and text like '%#%'
)
select distinct token
from ts_debug('russian', strings.text)
where alias = 'word';

但显然它不起作用，因为ts_debug返回记录集。

我该怎么做？

Answer 1

使用横向连接：

<div style={{ marginLeft: `${currentPer}%`, marginRight: `${100 - currentPer}%` }}>
  <div className={s.currentText}>
    {intl.formatMessage(messages.boo)}
  </div>
</div>
<div style={{ marginLeft: `${currentPer}%`, marginRight: `${100 - currentPer}%` }}>
  <div
    className={s.down}
  />
</div>

Answer 2

可以将 strings.text 替换为（SELECT text FROM strings）

with strings as (
    select text
    from messages
    where channel_id = 12345 and text like '%#%'
)
select distinct token
from ts_debug('russian', (SELECT text FROM strings))
where alias = 'word';

或加入

with strings as (
    select text
    from messages
    where channel_id = 12345 and text like '%#%'
)
select distinct token
from strings 
INNER JOIN ts_debug('russian', strings.text) AS tsd ON true
where alias = 'word';

如何使用返回记录集的函数运行嵌套查询？

2 个答案: