Listagg Kullanımı. Plsql 10g de listagg fonksiyonunun kullanımı plsql 11g versiyonunda select listagg ordernumber within group order by ordernumber order number from oeorderheadersall where rownum 10. Null values in the measurecolumn are ignored.
Here in the connect by clause rather than prior expr expr the condition is is not null. Right select query except left select query. For a specified measure listagg orders data within each group specified in the order by clause and then concatenates the values of the measure column.
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The oracle union all operator is used to combine the result sets of 2 or more select statements. Select groupid listagg name within group order by name as names from demotable group by groupid. Right select query except left select query. The oracle listagg function is an aggregation function that transforms data from multiple rows into a single list of values separated by a specified delimi.