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Drop statement in sql
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Drop statement in sql


Date:30.05.2017, 18:25 Do not confuse the DROP statement with the DELETE statement. The DROP statement excludes variables from output data sets; the DELETE statement excludes observations. Examples These examples show the correct syntax for listing variables with the DROP statement: drop time shift batchnum; drop grade1-grade20; In this example, the variables PURCHASE and REPAIR are used in processing but are not written. The variables in the DROP statement are available for processing in the DATA step. If no DROP or KEEP statement appears, all data sets that are created in the DATA step contain all variables. The KEEP statement is a parallel statement that specifies a list of variables to write to output data sets. Use the KEEP statement instead of the DROP statement if the number of variables to include is significantly smaller than the number to omit. All rights reserved). Tip: You can list the variables in any form that SAS allows. Details The DROP statement applies to all the. SAS data sets that are created within the same DATA step and can appear anywhere in the step.
Drop statement in sql


Drop statement in sql Drop statement in sql


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