Technical Reference Manual - InduSoft

Appendix: Built-in Scripting Language
Returned value
0 Record found.
non-zero
Record set contains no records or you moved forward, after the last record.
You can use this function along with the ODBCIsBOF function to determine whether the record set contains
any records or is empty. Immediately after calling the ODBCQuery function, and if the record set contains no
records, ODBCIsBOF returns non-zero. When you open a record set with at least one record, the first record
is the current record and ODBCIsEOF returns a zero (0). If the last record is the current record, and you call
ODBCMoveNext, ODBCIsEOF will subsequently return a non-zero.
Examples
Tag Name
Expression
Tag ODBCIsEOF( 5 )
ODBCIsFieldNULL
Reports whether a specified field in a record set was flagged as NULL.
Function Group Execution Windows Embedded Thin Client
ODBCIsFieldNULLODBC Synchronous Supported Not supported Executed on Server
Syntax
ODBCIsFieldNULL(numHandler,strColName)
numHandler
strColName
The handler returned by the ODBCOpen function.
The column name.
Returned value
0 The specified field is not flagged as Null.
Non-Zero
The specified field is flagged as Null.
Examples
Tag Name
Expression
Tag ODBCIsFieldNULL( 7, "CustomerName" )
Tag ODBCIsFieldNULL( 3, "CompanyName" )
ODBCIsFieldNullable
Reports whether a specified field is nullable (i.e., can be set to a NULL value).
Function Group Execution Windows Embedded Thin Client
ODBCIsFieldNullable
Synchronous Supported Not supported Executed on Server
Syntax
ODBCIsFieldNullable(numHandler,strColName)
numHandler
The handler returned by the ODBCOpen function.
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