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What is subquery ?
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Answer / s
Subquery is a SELECT statement used within a WHERE clause
or having CLAUSE of an SQL statment.
| Is This Answer Correct ? | 26 Yes | 5 No |
Answer / xx
A query embedded inside another (parent) SQL statement,
returning rows used by the parent.
| Is This Answer Correct ? | 15 Yes | 6 No |
Answer / v.chellappa
Usally subquery is executed first then result return to the
main query.
Based on the returned value the main querey is executed
| Is This Answer Correct ? | 7 Yes | 1 No |
Answer / kinjal patel
subquery is a slect statement that is embaded in clause of
another sql statement ,called the parent statement.
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / pooja intwala
A subquery is a SELECT statement within another SQL statement. The SQL statement can be SELECT, WHERE clause, FROM clause, JOIN, INSERT, UPDATE, DELETE, SET, DO, or another subquery.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / navdeep gill
subquery can be define sa a select query that erturns
single or multiple values
| Is This Answer Correct ? | 3 Yes | 5 No |
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Hi All, In a Cobol-DB2 program, I am fetching rows from 4 tables using cursor and then based on the a field present in that table, It processes the information accordingly..for example stat-c is one digit field..if stat-c is 'D' then the a row is deleted from table and written those details in to a file. If the stat-c is 'U' then a row is updated (hardcoded what to update)in a table and written those details in to a file. If the stat-c is 'I' then a row is inserted in a table and written those details in to two files. The issue is i have to include the intermediate commits. When an abend occurs, due to commit statement db2 tables will be saved, But there will be lose of file contents. When we resubmitting the job associated with this program there will be insert ,update and delete anomolies to avoid that what measures could be taken?. The intermediate commit is nothing but issuing commit after massive inserts, updates and deletes(sum of 500actions)
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