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How to send a SQL statement longer than 1024 characters with EcoStruxure Machine SCADA Expert?
In EcoStruxure Machine SCADA Expert, the function DBExecute can be used to write some data in SQL Database.
There is a limitation with this function. The maximum length of an SQL statement 1024 characters.
The goal of this article is to explain how to send more than 1024 characters in the SQL Databse, with the function DBExecute
This article is applicable for EcoStruxure Machine SCADA Expert, all version
To execute SQL commands longer than 1024 characters with DBExecute() or DBCursorOpenSQL(), need to break the SQL statement into fragments, storing those fragments in string tags, and then using tag pointers to reference those tags.
For example:
There is a limitation with this function. The maximum length of an SQL statement 1024 characters.
The goal of this article is to explain how to send more than 1024 characters in the SQL Databse, with the function DBExecute
This article is applicable for EcoStruxure Machine SCADA Expert, all version
To execute SQL commands longer than 1024 characters with DBExecute() or DBCursorOpenSQL(), need to break the SQL statement into fragments, storing those fragments in string tags, and then using tag pointers to reference those tags.
For example:
$SQL1 = "first 1000 chars"
$SQL2 = "second 1000 chars"
$DBExecute("ConnName", "{SQL1}{SQL2}")
$SQL2 = "second 1000 chars"
$DBExecute("ConnName", "{SQL1}{SQL2}")
Publikováno pro:Schneider Electric Česká republika
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