Comparison of limits

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Comparison of limits

Maximum size limits	Stata/BE	Stata/SE	Stata/MP
# of observations (1)	2,147,483,619	2,147,483,619	1,099,511,627,775
# of variables	2,048	32,767	120,000
# of right hand side variables	798	10,998	65,532
# characters in a command	264,408	4,227,159	4,227,159
# of interacted continuous variables # of interacted factor variables	64 8	64 8	64 8
length of string in string expression (bytes)	2,000,000,000	2,000,000,000	2,000,000,000
# of characters in a macro (2)	264,392	4,227,143	15,480,200
length of a variable name (characters) length of ado-command name (characters) length of a global macro name (characters) length of a local macro name (characters) length of a str# variable (bytes) length of a strL variable (bytes)	32 32 32 31 2,045 2,000,000,000	32 32 32 31 2,045 2,000,000,000	32 32 32 31 2,045 2,000,000,000
frames (# of frames)	100	100	100
import sas (# of variables)	2,048	32,766	32,766
import spss (# of variables)	2,048	32,766	32,766
infile record length without dictionary record length with a dictionary	none 524,275	none 524,275	none 524,275
infix record length with a dictionary	524,275	524,275	524,275
label length of dataset label (characters) length of variable label (characters) length of value label string (bytes) length of name of value label (characters) # of codings within one value label	80 80 32,000 32 65,536	80 80 32,000 32 65,536	80 80 32,000 32 65,536
label language # of different languages	100	100	100
matrix (3) dimension of single matrix	800x800	11,000x11,000	65,534x65,534

Notes

For Stata/MP, the maximum number of observations is 1,099,511,627,775, and for Stata/SE, the maximum number is 2,147,483,619. In practice, both editions are limited by memory.

The maximum length of the contents of a macro is fixed in Stata/BE and settable in Stata/SE and Stata/MP. The currently set maximum length is recorded in c(macrolen); type display c(macrolen). The maximum length can be changed with set maxvar. If you set maxvar to a larger value, the maximum length increases; if you set maxvar to a smaller value, the maximum length decreases. The relationship between them is maximum_length = 129*maxvar + 200.

In Mata, matrices are limited only by the amount of memory on your computer.

Determining which edition of Stata you are running

Type

           . about

The response will be Stata/MP, Stata/SE, or Stata/BE. Other information is also shown, including your serial number.

View the list of detailed size limits.

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