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core/ddl/mddl_dc_difftable.sas
2022-05-10 20:58:35 +00:00

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SAS

/**
@file
@brief Difftable DDL
@details Used to store changes to tables. Used by mp_storediffs.sas
and mp_stackdiffs.sas
**/
%macro mddl_dc_difftable(libds=WORK.DIFFTABLE);
proc sql;
create table &libds(
load_ref char(36) label='unique load reference',
processed_dttm num format=E8601DT26.6 label='Processed at timestamp',
libref char(8) label='Library Reference (8 chars)',
dsn char(32) label='Dataset Name (32 chars)',
key_hash char(32) label=
'MD5 Hash of primary key values (pipe seperated)',
move_type char(1) label='Either (A)ppended, (D)eleted or (M)odified',
is_pk num label='Is Primary Key Field? (1/0)',
is_diff num label=
'Did value change? (1/0/-1). Always -1 for appends and deletes.',
tgtvar_type char(1) label='Either (C)haracter or (N)umeric',
tgtvar_nm char(32) label='Target variable name (32 chars)',
oldval_num num format=best32. label='Old (numeric) value',
newval_num num format=best32. label='New (numeric) value',
oldval_char char(32765) label='Old (character) value',
newval_char char(32765) label='New (character) value'
);
%local lib;
%let libds=%upcase(&libds);
%if %index(&libds,.)=0 %then %let lib=WORK;
%else %let lib=%scan(&libds,1,.);
proc datasets lib=&lib noprint;
modify %scan(&libds,-1,.);
index create
pk_mpe_audit=(load_ref libref dsn key_hash tgtvar_nm)
/nomiss unique;
quit;
%mend mddl_dc_difftable;