15.10 - Large Objects - Call-Level Interface Version 2

Teradata Call-Level Interface Version 2 Reference for Mainframe-Attached Systems

Call-Level Interface Version 2
Programming Reference

Normal fields in a database table are limited to 64000 bytes. To allow for significantly larger fields, such as audio or video data, CLIv2 supports large object (LOB) fields. If LOBs exceed the maximum statement size, they are deferred using the AS DEFERRED phrase in the USING row descriptor for the request string instead of being entirely included in the initial request, such as (USING BLOB AS DEFERRED) or (USING BLOB AS DEFERRED BY NAME). For DEFERRED BY NAME, the name is of data type VARCHAR. In this case, Teradata Database includes an ElicitData or ElicitDataByName parcel in the response to prompt the CLIv2 application to add the LOB.