EXPLAIN and Embedded SQL - Teradata Database - Teradata Vantage NewSQL Engine

SQL Data Manipulation Language

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
March 2019
Language
English (United States)
Last Update
2019-05-03
dita:mapPath
fbo1512081269404.ditamap
dita:ditavalPath
TD_DBS_16_20_Update1.ditaval
dita:id
B035-1146
lifecycle
previous
Product Category
Teradata Vantage™

Use EXPLAIN only with data returning requests. EXPLAIN returns multiple rows of a single column whose data type is VARCHAR(80). Because it causes multiple rows to be returned, EXPLAIN can only be performed with a cursor.

For static execution of EXPLAIN, see Teradata Vantage™ SQL Stored Procedures and Embedded SQL , B035-1148 , substituting an EXPLAIN-modified SQL request for the query_expression clause shown there.

Do not perform EXPLAIN request modifiers dynamically because the result is unpredictable.