Hello,

I have two problems. THe first problem is with the date variable below. this is a string variable. When I try to use the replace command, it says it cannot do it. I understand it is because stata reads it as a string but cannot read what is in the string. How could I make stata create a date variable from my Date below?

Also, for the specific duplicate: I have a company that might have been copied twice: CKXE. Unfortunately I cannot show it to you in this dataex, because its in the middle of the big dataset (unelss you all can tell me a way of getting the specific range of observations in which CKXE is there).
Once I find the duplicated TIC, I need to delete it.

How would I go about doing this?

Danke !


Code:
* Example generated by -dataex-. To install: ssc install dataex
clear
input str7 TIC str10 CIK str4 Date str72 Company_Conformed_Name str9 Form_Type str40 BA_Street1 str30 BA_City
"AIR"  "0000001750" "2015" "AAR CORP"                          "10-K"   "1100 N WOOD DALE RD"           "WOOD DALE"      
"AIR"  "0000001750" "2014" "AAR CORP"                          "10-K"   "1100 N WOOD DALE RD"           "WOOD DALE"      
"AIR"  "0000001750" "2013" "AAR CORP"                          "10-K"   "1100 N WOOD DALE RD"           "WOOD DALE"      
"AIR"  "0000001750" "2012" "AAR CORP"                          "10-K"   "1100 N WOOD DALE RD"           "WOOD DALE"      
"AIR"  "0000001750" "2011" "AAR CORP"                          "10-K"   "1100 N WOOD DALE RD"           "WOOD DALE"      
"AIR"  "0000001750" "2010" "AAR CORP"                          "10-K"   "1100 N WOOD DALE RD"           "WOOD DALE"      
"AIR"  "0000001750" "2009" "AAR CORP"                          "10-K"   "1100 N WOOD DALE RD"           "WOOD DALE"      
"AAL"  "0000006201" "2015" "AMERICAN AIRLINES INC"             "10-K"   "4333 AMON CARTER BLVD"         "FORT WORTH"     
"AAL"  "0000006201" "2014" "AMERICAN AIRLINES INC"             "10-K"   "4333 AMON CARTER BLVD"         "FORT WORTH"     
"AAL"  "0000006201" "2013" "AMR CORP"                          "10-K/A" "4333 AMON CARTER BLVD"         "FORT WORTH"     
"AAL"  "0000006201" "2013" "AMR CORP"                          "10-K"   "4333 AMON CARTER BLVD"         "FORT WORTH"     
"AAL"  "0000006201" "2012" "AMR CORP"                          "10-K"   "4333 AMON CARTER BLVD"         "FORT WORTH"     
"AAL"  "0000006201" "2011" "AMR CORP"                          "10-K"   "4333 AMON CARTER BLVD"         "FORT WORTH"     
"AAL"  "0000006201" "2010" "AMR CORP"                          "10-K"   "4333 AMON CARTER BLVD"         "FORT WORTH"     
"AAL"  "0000006201" "2009" "AMR CORP"                          "10-K"   "4333 AMON CARTER BLVD"         "FORT WORTH"     
"CECE" "0000003197" "2015" "CECO ENVIRONMENTAL CORP"           "10-K"   "4625 RED BANK ROAD, SUITE 200" "CINCINNATI"     
"CECE" "0000003197" "2014" "CECO ENVIRONMENTAL CORP"           "10-K"   "4625 RED BANK ROAD, SUITE 200" "CINCINNATI"     
"CECE" "0000003197" "2013" "CECO ENVIRONMENTAL CORP"           "10-K"   "4625 RED BANK ROAD, SUITE 200" "CINCINNATI"     
"CECE" "0000003197" "2012" "CECO ENVIRONMENTAL CORP"           "10-K"   "4625 RED BANK ROAD, SUITE 200" "CINCINNATI"     
"CECE" "0000003197" "2011" "CECO ENVIRONMENTAL CORP"           "10-K"   "3120 FORRER STREET"            "CINCINNATI"     
"CECE" "0000003197" "2010" "CECO ENVIRONMENTAL CORP"           "10-K"   "3120 FORRER STREET"            "CINCINNATI"     
"CECE" "0000003197" "2009" "CECO ENVIRONMENTAL CORP"           "10-K/A" "3120 FORRER STREET"            "CINCINNATI"     
"CECE" "0000003197" "2009" "CECO ENVIRONMENTAL CORP"           "10-K"   "3120 FORRER STREET"            "CINCINNATI"     
"AVX"  "0000859163" "2015" "AVX Corp"                          "10-K"   "1 AVX BOULEVARD"               "FOUNTAIN INN"   
"AVX"  "0000859163" "2014" "AVX Corp"                          "10-K/A" "1 AVX BOULEVARD"               "FOUNTAIN INN"   
"AVX"  "0000859163" "2014" "AVX Corp"                          "10-K"   "1 AVX BOULEVARD"               "FOUNTAIN INN"   
"AVX"  "0000859163" "2013" "AVX Corp"                          "10-K/A" "1 AVX BOULEVARD"               "FOUNTAIN INN"   
"AVX"  "0000859163" "2013" "AVX Corp"                          "10-K"   "1 AVX BOULEVARD"               "FOUNTAIN INN"   
"AVX"  "0000859163" "2012" "AVX Corp"                          "10-K"   "1 AVX BOULEVARD"               "FOUNTAIN INN"   
"AVX"  "0000859163" "2011" "AVX Corp"                          "10-K"   "1 AVX BOULEVARD"               "FOUNTAIN INN"   
"AVX"  "0000859163" "2010" "AVX CORP"                          "10-K"   "801 17TH AVE S"                "MYRTLE BEACH"   
"AVX"  "0000859163" "2009" "AVX CORP"                          "10-K"   "801 17TH AVE S"                "MYRTLE BEACH"   
"PNW"  "0000764622" "2015" "ARIZONA PUBLIC SERVICE CO"         "10-K"   "400 NORTH FIFTH STREET"        "PHOENIX"        
"PNW"  "0000764622" "2014" "ARIZONA PUBLIC SERVICE CO"         "10-K"   "400 NORTH FIFTH STREET"        "PHOENIX"        
"PNW"  "0000764622" "2013" "ARIZONA PUBLIC SERVICE CO"         "10-K"   "400 NORTH FIFTH STREET"        "PHOENIX"        
"PNW"  "0000764622" "2012" "PINNACLE WEST CAPITAL CORP"        "10-K"   "400 N FIFTH ST"                "PHOENIX"        
"PNW"  "0000764622" "2011" "PINNACLE WEST CAPITAL CORP"        "10-K"   "400 N FIFTH ST"                "PHOENIX"        
"PNW"  "0000764622" "2010" "PINNACLE WEST CAPITAL CORP"        "10-K"   "400 N FIFTH ST"                "PHOENIX"        
"PNW"  "0000764622" "2009" "PINNACLE WEST CAPITAL CORP"        "10-K"   "400 N FIFTH ST"                "PHOENIX"        
"AAN"  "0000706688" "2015" "AARON'S INC"                       "10-K"   "309 E. PACES FERRY ROAD, N.E." "ATLANTA"        
"AAN"  "0000706688" "2014" "AARON'S INC"                       "10-K/A" "309 E. PACES FERRY ROAD, N.E." "ATLANTA"        
"AAN"  "0000706688" "2014" "AARON'S INC"                       "10-K"   "309 E. PACES FERRY ROAD, N.E." "ATLANTA"        
"AAN"  "0000706688" "2013" "AARON'S INC"                       "10-K"   "309 E. PACES FERRY ROAD, N.E." "ATLANTA"        
"AAN"  "0000706688" "2012" "AARON'S INC"                       "10-K"   "309 E. PACES FERRY ROAD, N.E." "ATLANTA"        
"AAN"  "0000706688" "2011" "AARON'S INC"                       "10-K"   "309 E. PACES FERRY ROAD, N.E." "ATLANTA"        
"AAN"  "0000706688" "2010" "AARON'S INC"                       "10-K"   "309 E. PACES FERRY ROAD, N.E." "ATLANTA"        
"AAN"  "0000706688" "2009" "AARON RENTS INC"                   "10-K"   "309 E. PACES FERRY ROAD, N.E." "ATLANTA"        
"ABT"  "0000001800" "2015" "ABBOTT LABORATORIES"               "10-K"   "100 ABBOTT PARK ROAD"          "ABBOTT PARK"    
"ABT"  "0000001800" "2014" "ABBOTT LABORATORIES"               "10-K"   "100 ABBOTT PARK ROAD"          "ABBOTT PARK"    
"ABT"  "0000001800" "2013" "ABBOTT LABORATORIES"               "10-K/A" "100 ABBOTT PARK ROAD"          "ABBOTT PARK"    
"ABT"  "0000001800" "2013" "ABBOTT LABORATORIES"               "10-K"   "100 ABBOTT PARK ROAD"          "ABBOTT PARK"    
"ABT"  "0000001800" "2012" "ABBOTT LABORATORIES"               "10-K"   "100 ABBOTT PARK ROAD"          "ABBOTT PARK"    
"ABT"  "0000001800" "2011" "ABBOTT LABORATORIES"               "10-K"   "100 ABBOTT PARK ROAD"          "ABBOTT PARK"    
"ABT"  "0000001800" "2010" "ABBOTT LABORATORIES"               "10-K"   "100 ABBOTT PARK ROAD"          "ABBOTT PARK"    
"ABT"  "0000001800" "2009" "ABBOTT LABORATORIES"               "10-K"   "100 ABBOTT PARK ROAD"          "ABBOTT PARK"    
"ACET" "0000002034" "2015" "ACETO CORP"                        "10-K"   "4 TRI HARBOR COURT"            "PORT WASHINGTON"
"ACET" "0000002034" "2014" "ACETO CORP"                        "10-K"   "4 TRI HARBOR COURT"            "PORT WASHINGTON"
"ACET" "0000002034" "2013" "ACETO CORP"                        "10-K"   "4 TRI HARBOR COURT"            "PORT WASHINGTON"
"ACET" "0000002034" "2012" "ACETO CORP"                        "10-K"   "4 TRI HARBOR COURT"            "PORT WASHINGTON"
"ACET" "0000002034" "2011" "ACETO CORP"                        "10-K"   "ONE HOLLOW LANE"               "LAKE SUCCESS"   
"ACET" "0000002034" "2010" "ACETO CORP"                        "10-K"   "ONE HOLLOW LANE"               "LAKE SUCCESS"   
"ACET" "0000002034" "2009" "ACETO CORP"                        "10-K"   "ONE HOLLOW LANE"               "LAKE SUCCESS"   
"AE"   "0000002178" "2015" "ADAMS RESOURCES & ENERGY, INC."    "10-K"   "17 S. BRIAR HOLLOW LN."        "HOUSTON"        
"AE"   "0000002178" "2014" "ADAMS RESOURCES & ENERGY, INC."    "10-K"   "17 S. BRIAR HOLLOW LN."        "HOUSTON"        
"AE"   "0000002178" "2013" "ADAMS RESOURCES & ENERGY, INC."    "10-K"   "17 S. BRIAR HOLLOW LN."        "HOUSTON"        
"AE"   "0000002178" "2012" "ADAMS RESOURCES & ENERGY, INC."    "10-K"   "4400 POST OAK PKWY STE 2700"   "HOUSTON"        
"AE"   "0000002178" "2011" "ADAMS RESOURCES & ENERGY, INC."    "10-K"   "4400 POST OAK PKWY STE 2700"   "HOUSTON"        
"AE"   "0000002178" "2010" "ADAMS RESOURCES & ENERGY, INC."    "10-K"   "4400 POST OAK PKWY STE 2700"   "HOUSTON"        
"AE"   "0000002178" "2009" "ADAMS RESOURCES & ENERGY, INC."    "10-K"   "4400 POST OAK PKWY STE 2700"   "HOUSTON"        
"AMD"  "0000002488" "2015" "ADVANCED MICRO DEVICES INC"        "10-K"   "ONE AMD PL"                    "SUNNYVALE"      
"AMD"  "0000002488" "2014" "ADVANCED MICRO DEVICES INC"        "10-K"   "ONE AMD PL"                    "SUNNYVALE"      
"AMD"  "0000002488" "2013" "ADVANCED MICRO DEVICES INC"        "10-K"   "ONE AMD PL"                    "SUNNYVALE"      
"AMD"  "0000002488" "2012" "ADVANCED MICRO DEVICES INC"        "10-K"   "ONE AMD PL"                    "SUNNYVALE"      
"AMD"  "0000002488" "2011" "ADVANCED MICRO DEVICES INC"        "10-K"   "ONE AMD PL"                    "SUNNYVALE"      
"AMD"  "0000002488" "2010" "ADVANCED MICRO DEVICES INC"        "10-K"   "ONE AMD PL"                    "SUNNYVALE"      
"AMD"  "0000002488" "2009" "ADVANCED MICRO DEVICES INC"        "10-K"   "ONE AMD PL"                    "SUNNYVALE"      
"AIM"  "0000109471" "2013" "AEROSONIC CORP /DE/"               "10-K/A" "1212 N HERCULES AVE"           "CLEARWATER"     
"AIM"  "0000109471" "2013" "AEROSONIC CORP /DE/"               "10-K"   "1212 N HERCULES AVE"           "CLEARWATER"     
"AIM"  "0000109471" "2012" "AEROSONIC CORP /DE/"               "10-K"   "1212 N HERCULES AVE"           "CLEARWATER"     
"AIM"  "0000109471" "2011" "AEROSONIC CORP /DE/"               "10-K"   "1212 N HERCULES AVE"           "CLEARWATER"     
"AIM"  "0000109471" "2010" "AEROSONIC CORP /DE/"               "10-K"   "1212 N HERCULES AVE"           "CLEARWATER"     
"AIM"  "0000109471" "2009" "AEROSONIC CORP /DE/"               "10-K"   "1212 N HERCULES AVE"           "CLEARWATER"     
"APD"  "0000002969" "2015" "AIR PRODUCTS & CHEMICALS INC /DE/" "10-K"   "7201 HAMILTON BLVD"            "ALLENTOWN"      
"APD"  "0000002969" "2014" "AIR PRODUCTS & CHEMICALS INC /DE/" "10-K"   "7201 HAMILTON BLVD"            "ALLENTOWN"      
"APD"  "0000002969" "2013" "AIR PRODUCTS & CHEMICALS INC /DE/" "10-K"   "7201 HAMILTON BLVD"            "ALLENTOWN"      
"APD"  "0000002969" "2012" "AIR PRODUCTS & CHEMICALS INC /DE/" "10-K"   "7201 HAMILTON BLVD"            "ALLENTOWN"      
"APD"  "0000002969" "2011" "AIR PRODUCTS & CHEMICALS INC /DE/" "10-K"   "7201 HAMILTON BLVD"            "ALLENTOWN"      
"APD"  "0000002969" "2010" "AIR PRODUCTS & CHEMICALS INC /DE/" "10-K"   "7201 HAMILTON BLVD"            "ALLENTOWN"      
"APD"  "0000002969" "2009" "AIR PRODUCTS & CHEMICALS INC /DE/" "10-K"   "7201 HAMILTON BLVD"            "ALLENTOWN"      
"ALAN" "0000098618" "2015" "ALANCO TECHNOLOGIES INC"           "10-K"   "7950 E. ACOMA DRIVE"           "SCOTTSDALE"     
"ALAN" "0000098618" "2014" "ALANCO TECHNOLOGIES INC"           "10-K"   "7950 E. ACOMA DRIVE"           "SCOTTSDALE"     
"ALAN" "0000098618" "2013" "ALANCO TECHNOLOGIES INC"           "10-K"   "7950 E. ACOMA DRIVE"           "SCOTTSDALE"     
"ALAN" "0000098618" "2012" "ALANCO TECHNOLOGIES INC"           "10-K/A" "7950 E. ACOMA DRIVE"           "SCOTTSDALE"     
"ALAN" "0000098618" "2012" "ALANCO TECHNOLOGIES INC"           "10-K"   "7950 E. ACOMA DRIVE"           "SCOTTSDALE"     
"ALAN" "0000098618" "2012" "ALANCO TECHNOLOGIES INC"           "10-K/A" "7950 E. ACOMA DRIVE"           "SCOTTSDALE"     
"ALAN" "0000098618" "2011" "ALANCO TECHNOLOGIES INC"           "10-K/A" "7950 E. ACOMA DRIVE"           "SCOTTSDALE"     
"ALAN" "0000098618" "2011" "ALANCO TECHNOLOGIES INC"           "10-K"   "7950 E. ACOMA DRIVE"           "SCOTTSDALE"     
"ALAN" "0000098618" "2010" "ALANCO TECHNOLOGIES INC"           "10-K"   "15575 N 83RD WAY"              "SCOTTSDALE"     
"ALAN" "0000098618" "2009" "ALANCO TECHNOLOGIES INC"           "10-K"   "15575 N 83RD WAY"              "SCOTTSDALE"     
"ALK"  "0000766421" "2015" "ALASKA AIR GROUP, INC."            "10-K"   "19300 INTERNATIONAL BOULEVARD" "SEATTLE"        
end