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MUSHclient scripting

Description of MUSHclient world function: world.DatabaseColumnType


Name DatabaseColumnType
Type Method
Summary Returns the type of data in an SQL column
Prototype long DatabaseColumnType(BSTR DbName, long Column);
Description

You can use this, after successfully doing a DatabaseStep, to find the type of data actually in each column of the current row.

Data types are:

Integer: 1
Float: 2
Text: 3
Blob: 4
Null: 5

This can be called after DatabaseStep to find whether a particular column is text, a number, or NULL (no data).

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


Note: Available in version 4.40 onwards.


Lua example
t = DatabaseColumnType ("db", 2)  --> 3 (if the column is text)
Returns A positive integer representing the data type of the specified column, as follows:

Integer: 1
Float: 2
Text: 3
Blob: 4
Null: 5

Otherwise, an error code:

-1 : Database id not found
-2 : Database not open
-4 : Do not have prepared statement
-5 : Do not have a valid row
-7 : Column number out of range
Introduced in version 4.40

See also ...

Function Description
DatabaseColumnName Find the name of a specified column returned by an SQL statement
DatabaseColumnNames Return a table of all the columns returned by an SQL statement
DatabaseColumns Find how many columns will be returned by an SQL statement
DatabaseColumnText Returns the contents of an SQL column, as text
DatabaseColumnType Returns the type of data in an SQL column
DatabaseColumnValue Returns the contents of an SQL column, as text, float, integer, or null
DatabaseColumnValues Returns the contents of all the SQL columns after a step
DatabaseError Returns an English string describing the most recent SQL error
DatabaseExec Executes SQL code against an SQLite database
DatabaseFinalize Finalizes (wraps up) a previously-prepared SQL statement
DatabaseLastInsertRowid Returns the most recently automatically allocated database key
DatabaseOpen Opens an SQLite database
DatabasePrepare Prepares an SQL statement for execution
DatabaseReset Resets a previously-prepared SQL statement to the start

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