get sql column names()

Included in the standard from version 4.6.12, but commented out. See class name "BasicGetSqlColumnNames" in configuration file ./etc/admin/datawizard/filter.properties.

This function writes all the column names of the SQL statement a into list d.

The return value of the function is the number of elements inserted into the list or "-1" (see parameter e).

Parameters


Parameter

Description

a

The SQL select statement.

b

The database alias.

c

Name of the list for the SQL parameters. See example.

d

Name of the list for the column names. Note: List is emptied beforehand.

e

(optional) If true, occurring SQL errors are ignored (instead of profile termination with error) and the return value is -1. Default: false.

Examples


Assume list myparams={1341706}. Relevant for parameter c in last example.


Parameter a

Parameter b

Parameter c

Parameter d

Parameter e

Result

select * from dw_suspend

hub


mylist

false

List mylist={file_reference,profile_id,profile,client,restart_in,is_suspended,file_name,backup_name} and return value 8.

select file_reference, profile_id from dw_suspend

hub


mylist

false

List mylist={file_reference,profile_id} and return value 2.

select date_at,name from dw_log where dw_job=@1:i@

hub

myparams

mylist

false

List mylist={date_at,name} and return value 2. Note: @1:i@ is resolved to 1341706, see list myparams and function select-statement a [[param &1 = c], d,e, f,g,h,i,j], default k,l,m,n dbAlias = b for details.