MySQL语法错误消息“操作数应包含1列". [英] MySQL Syntax error message "Operand should contain 1 column(s)"

问题描述

我尝试运行以下语句:

INSERT INTO VOUCHER (VOUCHER_NUMBER, BOOK_ID, DENOMINATION)
SELECT (a.number, b.ID, b.DENOMINATION) 
FROM temp_cheques a, BOOK b
WHERE a.number BETWEEN b.START_NUMBER AND b.START_NUMBER+b.UNITS-1;

据我所知，应该将temp_cheques中的每条记录插入到VOUCHER中，其中ID和DENOMINATION字段与BOOK表中的条目相对应(temp_cheques来自数据库备份，我正尝试以其他格式重新创建).但是，当我运行它时，出现错误:

which, as I understand it, should insert into VOUCHER each record from temp_cheques with the ID and DENOMINATION fields corresponding to entries in the BOOK table (temp_cheques comes from a database backup, which I'm trying to recreate in a different format). However, when I run it, I get an error:

Error: Operand should contain 1 column(s)
SQLState:  21000
ErrorCode: 1241

我正在SQuirrel中运行它，而其他任何查询都没有问题.我的查询语法有问题吗?

I'm running this in SQuirrel and have not had issues with any other queries. Is there something wrong with the syntax of my query?

BOOK的结构是:

ID  int(11)
START_NUMBER    int(11)
UNITS   int(11)
DENOMINATION    double(5,2)

temp_cheques的结构为:

The structure of temp_cheques is:

ID  int(11)
number  varchar(20)

推荐答案

尝试从SELECT子句中删除括号.从 Microsoft TechNet 中，使用SELECT子句的INSERT语句的正确语法是以下.

Try removing the parenthesis from the SELECT clause. From Microsoft TechNet, the correct syntax for an INSERT statement using a SELECT clause is the following.

INSERT INTO MyTable  (PriKey, Description)
       SELECT ForeignKey, Description
       FROM SomeView

---

您得到的错误，"SELECT将检查超过MAX_JOIN_SIZE行；检查您的WHERE并使用SET SQL_BIG_SELECTS = 1或SET SQL_MAX_JOIN_SIZE =#(如果SELECT可以的话)."实际上是正确的，假设您有很多选择. BOOK和temp_cheques中的行.您正在尝试查询两个表中的所有行并进行交叉引用，从而导致m * n大小的查询. SQL Server会在执行可能较长的操作之前警告您.

---

The error you're getting, "The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET SQL_MAX_JOIN_SIZE=# if the SELECT is okay.", is actually correct, assuming you have many rows in both BOOK and temp_cheques. You are trying to query all rows from both tables and make a cross-reference, resulting in an m*n size query. SQL Server is trying to warn you of this, before performing a potentially long operation.

在运行此语句之前将SQL_BIG_SELECTS = 1，然后重试.应该可以，但是请注意，此操作可能需要很长时间.

Set SQL_BIG_SELECTS = 1 before running this statement, and try again. It should work, but note that this operation may take a long time.

这篇关于MySQL语法错误消息“操作数应包含1列".的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！