I have the following stored procedure in a MYSQL database. The stored procedure gets lon,lat and than I'm doing an update on a different database and table.
DROP PROCEDURE IF EXISTS annuals.updateSalesFlorida;
CREATE DEFINER=`dddd`@`%` PROCEDURE `updateSales`(propertyId int)
BEGIN
DECLARE lat FLOAT;
DECLARE lon FLOAT;
SELECT SitusLongitude,SitusLatitude
INTO lon,lat
FROM annuals.florida
WHERE PropertyID=propertyId
LIMIT 1 FOR UPDATE;
UPDATE sales.florida
SET
`SitusLongitude` = lon,
`SitusLatitude` = lat
WHERE PROPERTYUNIQUEID=propertyId;
END;
Every time I run the stored procedure the SitusLongitude
and SitusLatitude
columns are 0. I know for a fact that the previous selected SitusLongitude
and SitusLatitude
have actual values in there. For some reason the variables are not being set in lat,lon. Any idea what I'm dong wrong?
The problem is that the procedure parameter has the same name as a column in the tables. When you refer to propertyid
in the queries, it uses the column, not the parameter. Column and variable names are case-insensitive, so it doesn't matter that you spelled one of them PropertyID
and the other propertyId
.
Use a different name for the parameter, eg p_propertyId
Also, there's no need for two queries, you can do it in one with a JOIN
.
UPDATE sales.florida AS s
CROSS JOIN (
SELECT *
FROM annuals.florida
WHERE propertyId = p_propertyId
LIMIT 1) AS a
SET s.SitusLongitude = a.SitusLongitude, s.SitusLatitude = a.SitusLatitude
WHERE s.PROPERTYUNIQUEID = p_propertyId
Note that using LIMIT
without ORDER BY
means that the row that's selected will be unpredictable.
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