fill_sic_codes

Internal function that joins fundamentals data with company header
to fill missing historical SIC codes using coalesce.

internal

Provides simple functions for accessing data from 'Wharton Research
Data Services' ('WRDS'), a widely used financial database in academic
research. Includes credential management via the system keyring,
database tools, and functions for downloading generic tables, 'Compustat'
fundamentals, and linking tables.

Ulrich Atz

wrds

Access 'Wharton Research Data Services' ('WRDS')

fill_sic_codes function

<dl><dt>tbl</dt>
<dd>A lazy table from funda/fundq.</dd>
<dt>wrds</dt>
<dd>Database connection.</dd></dl>

Arguments

Fill missing SIC codes from company header — fill_sic_codes

<dl>

<dt>tbl</dt>
<dd>A lazy table from funda/fundq.</dd>


<dt>wrds</dt>
<dd>Database connection.</dd>

</dl>

fill_sic_codes: Fill missing SIC codes from company header

Description

Usage

Value

Arguments