mysql插入语句作为变量[重复]

Question

是否可以在存储过程中将变量设置为插入语句？

类似：

set variable1 = insert into table(field1, field2, field3) values(val1, val2, variable2);

如果有，应该怎么写？

我一直在抛出错误，并且在野外的文档是不确定的。

我是为了简洁，但整个过程是这样的：

-- --------------------------------------------------------------------------------
-- Routine DDL
-- Note: comments before and after the routine body will not be stored by the server
-- --------------------------------------------------------------------------------
DELIMITER $$

CREATE DEFINER=`root`@`localhost` PROCEDURE `new_accession`(in barcode int, in accepted  varchar(11), in wt float(11,2), in wtunit varchar(3),in draw date, in chist varchar(256), in ghist varchar(256), in meds varchar(256), in diffdiag varchar(256),in diseasesus varchar(256),in volume int, in facility int, in patient int, in employ int, in compromised int, in receiving int, in test int)
BEGIN
declare accessionId int;
declare accessionTest int;
declare tkInsert varchar(256);
declare hptInsert varchar(256);
declare calInsert varchar(256);
declare pthInsert varchar(256);
declare vitdtkInsert varchar(256);
declare cnpInsert varchar(256);

if wtunit = 'lb' then set wt = convertLbKg(wt);
end if;

INSERT INTO accession(barcode_accession,accepted_accession,weight_accession,req_weight_units,draw_date_accession,cancer_history_accession,general_history_accession,medication_accession,differential_diagnosis_accession,disease_suspect_accession,volume_accession,facility_doctor_index_id_facility_doctor_index,patient_id_patient,employee_id_employee,accession_compromised_id_accession_compromised,receiving_id,accession_typeof_id_accession_typeof)
VALUES (barcode,accepted,wt,wtunit,draw,chist,ghist,meds,diffdiag,diseasesus,volume,facility,patient,employ,compromised,receiving,1);

set accessionId = last_insert_id();

set tkInsert = insert into pending(accession_facility_index,reagent_type,`status`)values(accessionId,1,'Pending');
set hptInsert = insert into pending(accession_facility_index,reagent_type,`status`)values(accessionId,2,'Pending');
set calInsert = insert into pending(accession_facility_index,reagent_type,`status`)values(accessionId,3,'Pending');
set pthInsert = insert into pending(accession_facility_index,reagent_type,`status`)values(accessionId,4,'Pending');

if test = 1 then tkInsert,calInsert;
elseif test =2 the hptInsert,pthInsert;
else pthInsert;
end if; 


END

Answer 1

不清楚您想要什么，但如果您的目标是存储 insert 的结果（受影响的行），您可以使用 ROW_COUNT()。

ROW_COUNT() 返回更改、删除或插入的行数 如果是 UPDATE、DELETE 或 INSERT，则按最后一条语句。
对于其他语句，该值可能没有意义。

例如：

variable1 = (select ROW_COUNT());

Answer 2

我想你正在寻找prepared statements。

PREPARE tkInsert FROM CONCAT("insert into pending(accession_facility_index,reagent_type,`status`)values(?, 1,'Pending')";

然后你执行它：

EXECUTE tkInsert USING accessionId;