Question

我试图一次更新多行。为此，我正在制作以下准备好的陈述：

WITH new_values (id, data, email) AS (
  VALUES ($1, $2, $3), ($4, $5, $6), ($7, $8, $9), ($10, $11, $12)
)
UPDATE prospects
  SET 
    data = new_values.data,
    email = new_values.email
  FROM new_values
  WHERE
    prospects.id = new_values.id
  RETURNING *

但我收到以下错误：

error: bind message supplies 12 parameters, but prepared statement "prospects-multi-update" requires 0
api-prospects_1       |     at Connection.parseE (/usr/src/app/node_modules/pg/lib/connection.js:546:11)
api-prospects_1       |     at Connection.parseMessage (/usr/src/app/node_modules/pg/lib/connection.js:371:19)
api-prospects_1       |     at Socket.<anonymous> (/usr/src/app/node_modules/pg/lib/connection.js:114:22)
api-prospects_1       |     at Socket.emit (events.js:180:13)
api-prospects_1       |     at addChunk (_stream_readable.js:274:12)
api-prospects_1       |     at readableAddChunk (_stream_readable.js:261:11)
api-prospects_1       |     at Socket.Readable.push (_stream_readable.js:218:10)
api-prospects_1       |     at TCP.onread (net.js:581:20)

我尝试了不同的查询（使用INSERT ... ON CONFLICT DO UPDATE），但它也是如此。

它仅适用于直接INSERT INTO次查询。

修改

以下是调用此查询的代码：（我删除了字符串生成函数，因为它不是很有用）

const upsertValues = async (entities) => {
  if (entities.length === 0) return []

  const client = pool.connect()

  const values = [...]
  const variables = [...]
  const setStatements = [...]

  const res = await client.query({
    name: `${resourceName}-multi-update`,
    test: `
      WITH new_values (id, ${columns}) AS (
        VALUES ${variables}
      )
      UPDATE prospects
        SET ${setStatements}
        FROM new_values
        WHERE
          prospects.id = new_values.id
        RETURNING *
    `,
    values: flatten(values),
  })

  return res.row || []
}

Answer 1

错误是由于准备好的语句的属性text被错误地命名为test，因此引擎甚至无法找到查询字符串。

Prepared Statement不识别Postgres JS绑定上的任何参数

修改

1 个答案: