The syntax for the FOR Loop is: FOR loop_counter IN [REVERSE] lowest_number..highest_number LOOP {.statements.} END LOOP; You would use a FOR Loop when you want to execute the loop body a fixed number of times. 译:当你需循环体执行一定的次数的时候,就可以使用FOR Loop。 Let's take ...
The syntax for theCURSOR FOR Loopis: FOR record_index incursor_name LOOP {.statements.} END LOOP; You would use aCURSOR FOR Loopwhen you want to fetch and process every record in a cursor. TheCURSOR FOR Loopwill terminate when all of the records in the cursor have been fetched. 译:当...
Here’s the syntax for the WHILE loop statement: WHILE condition LOOP statements; END LOOP;Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) In this syntax, the condition is a boolean expression that evaluates to TRUE, FALSE or NULL. ...
The following illustrates the syntax of the cursor FOR LOOP statement: FOR record IN cursor_name LOOP process_record_statements; END LOOP; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) 1) record The record is the name of the index that the cursor FOR LOOP statement declares im...
Introduction to PL/pgSQL Loop statement The loop defines an unconditional loop that executes a block of code repeatedly until terminated by an exit or return statement. The following illustrates the syntax of the loop statement: <> loop statements; end loop; Typically, you use an if statement ...
Oracle/PLSQL: CURSOR FOR Loop The syntax for theCURSOR FOR Loopis: FOR record_index incursor_name LOOP {.statements.} END LOOP; You would use aCURSOR FOR Loopwhen you want to fetch and process every record in a cursor. TheCURSOR FOR Loopwill terminate when all of the records in the ...
This is an expression that yields the Boolean valueTRUE,FALSE, orNULL. It is associated with a sequence of statements, which is executed only if the expression yieldsTRUE. For the syntax ofboolean_expression, see"Expressions". cursor_for_loop_statement ...
id := FALSE; * ERROR at line 5: ORA-06550: line 5, column 3: PLS-00371: at most one declaration for 'ID' is permitted ORA-06550: line 5, column 3: PL/SQL: Statement ignored 2つの異なるユニットであれば、同じ識別子を宣言できます。その識別子で表される2つのオブジェクトは区...
Syntax highlighting now works correctly for alternative quote delimiters. The Code Assistant is now invoked for database links after typing @. Code Assistant “Describe Context” queries can now be modified through CANames.sql. The editor now detects Unicode encoding from the file contents in additi...
Syntax This is the syntax for the exit statement used in PostgreSQL: exit[label][when boolean_expression]; The above code contains theexitkeyword and label of the loop with the condition on which the loop will be terminated. The following code block contains the exit keyword with the when cl...