用循环语句试图让stata处理数据，但是既不报错也不出结果，真是奇怪，求各路大侠支招
语句如下
forvalues i = 0(1)1854783 {
if gvkey`i+1' == gvkey`i' {
gen ainvtq`i+1' = 0.5*(invtq`i+1'+invtq`i')
}
else if gvkey`i+1' != gvkey`i' {
gen ainvtq`i+1' = invtq`i+1'
}
}
数据见下方
| gvkey | linkprim | liid | linktype | lpermno | lpermco | linkdt | linkenddt | datadate | fyearq | fqtr | fyr | indfmt | consol | popsrc | datafmt | tic | cusip | conm | acctchgq | acctstdq | adrrq | ajexq | ajpq | bsprq | compstq | curcdq | curncdq | currtrq | curuscnq | datacqtr | datafqtr | scfq | rdq | apq | cogsq | invtq | rectq | revtq | sic | spcindcd | spcseccd | spcsrc | dldte | ipodate |
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19660331 | 1966 | 1 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
|
| USD | USD | 1 |
| 1966Q1 | 1966Q1 |
|
|
|
|
|
|
| 3089 | 325 | 978 |
| 19780630 |
|
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19660630 | 1966 | 2 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
|
| USD | USD | 1 |
| 1966Q2 | 1966Q2 |
|
|
|
|
|
|
| 3089 | 325 | 978 |
| 19780630 |
|
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19660930 | 1966 | 3 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
|
| USD | USD | 1 |
| 1966Q3 | 1966Q3 |
|
|
|
|
|
|
| 3089 | 325 | 978 |
| 19780630 |
|
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19661231 | 1966 | 4 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
|
| USD | USD | 1 |
| 1966Q4 | 1966Q4 |
|
|
| 2.82 |
|
| 4.032 | 3089 | 325 | 978 |
| 19780630 |
|
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19670331 | 1967 | 1 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
|
| USD | USD | 1 |
| 1967Q1 | 1967Q1 |
|
|
|
|
|
|
| 3089 | 325 | 978 |
| 19780630 |
|
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19670630 | 1967 | 2 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
|
| USD | USD | 1 |
| 1967Q2 | 1967Q2 |
|
|
|
|
|
|
| 3089 | 325 | 978 |
| 19780630 |
|
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19670930 | 1967 | 3 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
|
| USD | USD | 1 |
| 1967Q3 | 1967Q3 |
|
|
|
|
|
|
| 3089 | 325 | 978 |
| 19780630 |
|
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19671231 | 1967 | 4 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
| AA | USD | USD | 1 |
| 1967Q4 | 1967Q4 |
|
|
| 4.079 |
|
| 5.363 | 3089 | 325 | 978 |
| 19780630 |
|
1000 | C | 00X | NU |
|
| 19610101 | 19700929 | 19680331 | 1968 | 1 | 12 | INDL | C | D | STD | AE.2 | 32102 | A & E PLASTIK PAK INC |
| 3.09 | 1 |
|
| USD | USD | 1 |
| 1968Q1 | 1968Q1 |
|
|
|
|
|
|
| 3089 | 325 | 978 |
| 19780630 |
|
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