https://userapps.support.sap.com/sap/support/knowledge/en/1954390
1954390 - sp_iqtable gets error SQLCODE=-638 when the table has the comment which length over 128...
SAP IQ can add the comment to table by using COMMENT statement. If table 's comment length is over 128 bytes, then sp_iqtable gets error SQLCODE=-638. Msg...