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247 bytes removed ,  16:44, 2 August 2016
===Introduction of Compustat and Preparation for Stata===
See script for exact work: <code>E:\McNair\Projects\LBO\Patent Data Script</code>
Create tables as follows:
*Create table sdc with SDC data imported from the initial LBO data.
*Create table LBOCOMPUSTAT4 with Compustat data imported.
*Create table dealnumbxgvkey selecting deal numbers and gvkeys from table sdc.
*Create table compustatnamematch with compustat names matched against themselves imported
*Create table stdcompnamestdorgnamematched with standardized compustat names matched against stdorgname
*Create table matchedlbocompnames with standardized original lbo names matched to standardized compustat names
*Create table compnamematchlbocompnames with standardized compustat names, compustatnames, and standardized original lbo names
*Create table stdcompnamepatentjoin with variables standardized compustat names and patent numbers
*Create table compustatpatentinfo with variables standardized compustat names, patent numbers, and grant dates
*Create table stdcompnamexgvkeycleaned with variables standardized compustat names and gvkeys
*Create table ALLGVKey with all distinct gvkeys from stdcompnamexgvkeycleaned
*Create table AllYears with all years from 1970 to 2016
*Create table KeysXYears with variables gvkey and year. Each gvkey corresponds to 47 years.
*Create table keysxyearsxstdcompname with variables gvkeys, years, and standardized compustat names
*Create table compupatentyearsummary with variables standardized compustat names, gvkeys, years, and number of patents per year
*Create table dealnumbxgvkeyxlboyeartemp with variables deal numbers, gvkeys, LBO years, and exit years
*Create table dealnumbxgvkeyxlboyear with variables deal numbers, gvkeys, lbo years, exit years, entry year 1, entry year 2, exit year 1, and exit year 2
*Create table compupatentlboyearsummary with variables standard compustat names, gvkeys, years, number of patents per year, and lbo entries/exits in each year
*Create table statastaging with all variables from compupatentlboyearsummary in addition to all the pulled compustat variables
*Create table sicnaicsconversion with sic codes and naics codes as a conversion table for adding naics that correspond to the sic codes in blank rows
*Create table statastagingnew with two extra columns, concordsic and concordnaics, then export to stata
===Stata Work===
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