Question

在我看来，语法一切正常，但我得到了错误。

请注意：我正在通过在mysql控制台中粘贴此代码来创建触发器。不确定这是否重要。

DELIMITER $$
CREATE TRIGGER after_nse_fo_insert AFTER INSERT
ON NSE_FO
FOR EACH ROW
BEGIN
DECLARE settle_orders_data VARCHAR(1000) DEFAULT '';
DECLARE delimiter_pos INT DEFAULT 0;
DECLARE start_pos INT DEFAULT 0;
DECLARE fill_id VARCHAR(50) DEFAULT '';
DECLARE if_settled VARCHAR(50) DEFAULT '';
DECLARE units_settled INT DEFAULT 0;
DECLARE temp_diff INT DEFAULT 0;

CALL settle_trade_orders(NEW.FillId, NEW.SymbolName, NEW.TransactionType, NEW.AccountName, NEW.TradeDateTime, CAST(NEW.FillSize AS UNSIGNED), NEW.FillPrice, settle_orders_data);

settling_loop: LOOP

SET start_pos = delimiter_pos + 1;
SET delimiter_pos = LOCATE(',', settle_orders_data, start_pos);

IF delimiter_pos = 0 THEN
    LEAVE settling_loop;
END IF;

SET temp_diff = delimiter_pos - start_pos;
SET fill_id = SUBSTRING(settle_orders_data, start_pos, temp_diff);

SET start_pos = delimiter_pos + 1;
SET delimiter_pos = LOCATE(',', settle_orders_data, start_pos);
SET temp_diff = delimiter_pos - start_pos;
SET if_settled = SUBSTRING(settle_orders_data, start_pos, temp_diff);

SET start_pos = delimiter_pos + 1;
SET delimiter_pos = LOCATE(',', settle_orders_data, start_pos);
SET temp_diff = delimiter_pos - start_pos;
SET settled_count = SUBSTRING(settle_orders_data, start_pos, temp_diff);

-- settle in NSE_FO table
-- UPDATE NSE_FO
-- SET Settled=if_settled, settled_units=settled_count
-- WHERE FillId=fill_id;
END LOOP settling_loop;

END $$
DELIMITER ;

以下是我看到的错误

错误1064（42000）：您的SQL语法有错误;检查   手册，对应右边的MySQL服务器版本   在'IF;
附近使用的语法
SET temp_diff = delimiter_pos - start_pos; SET fill_id =   SUBSTRING（第19行的sett_o'

我不确定这些行的语法问题是什么？

更新：完全删除了IF声明。另一个错误抛出。

错误1064（42000）：您的SQL语法有错误;检查手册，对应右边的MySQL服务器版本在'（settle_orders_data，start_pos，temp_diff）附近使用的语法;组 start_pos = delimiter_pos + 1; '在第17行。完全删除了IF。

Answer 1

最后一个答案是完全错误地吠叫，因此我已将其删除了。

此代码运行时没有错误，请注意评论语句，因为我不希望您DROP NSE_FO意外。

编辑：这似乎是文本编辑器和控制台之间的复制/粘贴错误。不知道这是怎么发生的，但是我发现Notepad++（在Windows上）过去非常稳定。

此致

詹姆斯

USE test;

/*
DROP TABLE IF EXISTS NSE_FO;
CREATE TABLE NSE_FO (FillId BIT, SymbolName BIT, TransactionType BIT, AccountName BIT, TradeDateTime BIT, FillSize BIT, FillPrice BIT);
*/

DROP TRIGGER IF EXISTS after_nse_fo_insert;

DELIMITER $$
CREATE TRIGGER after_nse_fo_insert AFTER INSERT
ON NSE_FO
FOR EACH ROW
BEGIN
DECLARE settle_orders_data VARCHAR(1000) DEFAULT '';
DECLARE settled_count VARCHAR(1000) DEFAULT '';
DECLARE delimiter_pos INT DEFAULT 0;
DECLARE start_pos INT DEFAULT 0;
DECLARE fill_id VARCHAR(50) DEFAULT '';
DECLARE if_settled VARCHAR(50) DEFAULT '';
DECLARE units_settled INT DEFAULT 0;
DECLARE temp_diff INT DEFAULT 0;

CALL settle_trade_orders(NEW.FillId, NEW.SymbolName, NEW.TransactionType, NEW.AccountName, NEW.TradeDateTime, CAST(NEW.FillSize AS UNSIGNED), NEW.FillPrice, settle_orders_data);

settling_loop: LOOP

SET start_pos = delimiter_pos + 1;
SET delimiter_pos = LOCATE(',', settle_orders_data, start_pos);

IF delimiter_pos = 0 THEN
    LEAVE settling_loop;
END IF;

SET temp_diff = delimiter_pos - start_pos;
SET fill_id = SUBSTRING(settle_orders_data, start_pos, temp_diff);

SET start_pos = delimiter_pos + 1;
SET delimiter_pos = LOCATE(',', settle_orders_data, start_pos);
SET temp_diff = delimiter_pos - start_pos;
SET if_settled = SUBSTRING(settle_orders_data, start_pos, temp_diff);

SET start_pos = delimiter_pos + 1;
SET delimiter_pos = LOCATE(',', settle_orders_data, start_pos);
SET temp_diff = delimiter_pos - start_pos;
SET settled_count = SUBSTRING(settle_orders_data, start_pos, temp_diff);

-- settle in NSE_FO table
-- UPDATE NSE_FO
-- SET Settled=if_settled, settled_units=settled_count
-- WHERE FillId=fill_id;
END LOOP settling_loop;

END $$
DELIMITER ;

创建触发器：ERROR 1064（42000）：SQL语法中有错误;

1 个答案: