Download Oracle PL/SQL Language Pocket Reference: A Guide to Oracle's by Steven Feuerstein, Bill Pribyl, Chip Dawes PDF
By Steven Feuerstein, Bill Pribyl, Chip Dawes
Be extra effective with the Oracle PL/SQL language. The 5th version of this well known pocket reference places the syntax of particular PL/SQL language parts correct at your fingertips, together with positive aspects extra in Oracle Database 12c.
Whether you're a developer or database administrator, in the event you want solutions fast, the Oracle PL/SQL Language Pocket Reference will prevent hours of frustration with concise summaries of:
- primary language components, reminiscent of block constitution, datatypes, and declarations
- Statements for application keep watch over, cursor administration, and exception handling
- documents, techniques, services, triggers, and packages
- Execution of PL/SQL services in SQL
- Compilation suggestions, object-oriented good points, collections, and Java integration
This convenient pocket reference is an ideal significant other to Steven Feuerstein and invoice Pribyl's bestselling Oracle PL/SQL Programming.
Read Online or Download Oracle PL/SQL Language Pocket Reference: A Guide to Oracle's PL/SQL Language Fundamentals (5th Edition) PDF
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Extra info for Oracle PL/SQL Language Pocket Reference: A Guide to Oracle's PL/SQL Language Fundamentals (5th Edition)
Highest_number LOOP executable_statement(s) END LOOP; 30 | Oracle PL/SQL Language Pocket Reference The PL/SQL runtime engine automatically declares the loop index a PLS_INTEGER variable, and you don’t want or need to declare a variable with that name yourself. The lowest_number and highest_number ranges can be variables but are evaluated only once—on initial entry into the loop. The REVERSE key‐ word causes PL/SQL to start with the highest_number and dec‐ rement down to the lowest_number. For example, this code: BEGIN FOR counter IN 1 ..
GOTO Although rarely used, the GOTO statement performs uncondi‐ tional branching to a named label. At least one executable state‐ ment must follow the label (the NULL statement can be this necessary executable statement). ); END There are several scope restrictions on where a GOTO can branch control. A GOTO: • Can branch out of an IF statement, LOOP, or subblock. • Cannot branch into an IF statement, LOOP, or subblock. • Cannot branch from one section of an IF statement to another (from the IF-THEN section to the ELSE section is illegal).
Cannot branch from the exception section to the exe‐ cutable section of a PL/SQL block. • Cannot branch from the executable section to the excep‐ tion section of a PL/SQL block, although a RAISE does this. NULL The NULL statement is an executable statement that does nothing. It is useful when an executable statement must follow a GOTO label or to aid readability in an IF-THEN-ELSE struc‐ ture. selection = 'DETAIL' THEN exec_detail_report; ELSE Conditional and Sequential Control | 29 NULL; END IF; Loops The LOOP construct allows you to execute a sequence of state‐ ments repeatedly.