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By default, SAS procedures permit the greatest degree of concurrent access possible while guaranteeing the integrity of the data and the data analysis. Some statements and commands require member-level control and ignore the CNTLLEV= option. See SAS Language Reference: Dictionary for more information about this option.
Examples |
set datalib.fuel (cntllev=rec) point=obsnum; set datalib.fuel (cntllev=mem); by area;
The first SET statement changes the control level from the default of member to the record level by specifying the CNTLLEV= option. The second SET statement changes the control level from record to the member level. This might be done to ensure that a data set does not change while you are processing it. See Changing the Data Set Option Default Object for more information.
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