CREDENTIAL_USER { ASC_ID, name, ITEM}, CREDENTIAL_USER { MONTH, YEAR, ASC_ID}
both contain ASC_ID so ASC_ID becomes ambiguous in select query.
Select your data column wise and give separate alias for each column
CREDENTIAL_USER { ASC_ID, name, ITEM}, CREDENTIAL_USER { MONTH, YEAR, ASC_ID}
both contain ASC_ID so ASC_ID becomes ambiguous in select query.
Select your data column wise and give separate alias for each column