DatabaseColumnValue
Script function

world.DatabaseColumnValue

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Type

Method

Summary

Returns the contents of an SQL column, as text, float, integer, or null

Prototype

VARIANT DatabaseColumnValue(BSTR Name, long Column);

DOC_data_types View list of data type meanings

Description

You can use this, after successfully doing a DatabaseStep, to get the data in a particular column, in the appropriate format: text, floating point number, integer or null.

Columns start at 1 for the first column, up to the number returned by DatabaseColumns.

Lua example

x = DatabaseColumnValue ("db", 2)  --> the contents of column 2


Return value

The contents of the column, as a string, long, double or empty variant.

Returns the null variant if there is an error, such as invalid database id, no current row, etc.



See Also ...

Topics

DOC_database Database (SQLite)
DOC_lua_sqlite3 Lua SQLite (database) interface
DOC_scripting Scripting

Functions

FNC_DatabaseChanges DatabaseChanges (Returns a count of the changes to the database by the most recent SQL statement)
FNC_DatabaseClose DatabaseClose (Closes an SQLite database)
FNC_DatabaseColumnName DatabaseColumnName (Find the name of a specified column returned by an SQL statement)
FNC_DatabaseColumnNames DatabaseColumnNames (Return a table of all the columns returned by an SQL statement)
FNC_DatabaseColumns DatabaseColumns (Find how many columns will be returned by an SQL statement)
FNC_DatabaseColumnText DatabaseColumnText (Returns the contents of an SQL column, as text)
FNC_DatabaseColumnType DatabaseColumnType (Returns the type of data in an SQL column)
FNC_DatabaseColumnValues DatabaseColumnValues (Returns the contents of all the SQL columns after a step)
FNC_DatabaseError DatabaseError (Returns an English string describing the most recent SQL error)
FNC_DatabaseExec DatabaseExec (Executes SQL code against an SQLite database)
FNC_DatabaseFinalize DatabaseFinalize (Finalizes (wraps up) a previously-prepared SQL statement)
FNC_DatabaseInfo DatabaseInfo (Returns information about a database)
FNC_DatabaseLastInsertRowid DatabaseLastInsertRowid (Returns the most recently automatically allocated database key)
FNC_DatabaseList DatabaseList (Lists all databases)
FNC_DatabaseOpen DatabaseOpen (Opens an SQLite database)
FNC_DatabasePrepare DatabasePrepare (Prepares an SQL statement for execution)
FNC_DatabaseReset DatabaseReset (Resets a previously-prepared SQL statement to the start)
FNC_DatabaseStep DatabaseStep (Executes a previously-prepared SQL statement)
FNC_DatabaseTotalChanges DatabaseTotalChanges (Returns a count of the total changes to the database)

(Help topic: function=DatabaseColumnValue)

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