Oracle® PLSQL by Example, Fifth Edition, presents the Oracle PLSQL programming language in a unique and highly effective format. It challenges you to learn Oracle PLSQL by using it rather than by simply reading about it. Just as a grammar workbook would teach you about nouns and verbs by first showi[r]
that with the Oracle Developer's Guide. Then finish your beginner's work by readingOracle PL/SQL Programming by Steven Feuerstein with Bill Pribyl (O'Reilly). O'Reilly hasseveral other books on Oracle that you will find helpful. Check them out athttp://oracle
thuộc tính %ROWCOUNT•%ROWCOUNT trả về số dòng (row) bị tác động bởi câu lệnh INSERT, UPDATE, DELETEhoặc SELECT INTO.DECLAREmgr_no NUMBER(6) := 122;BEGINDELETE FROM employees WHERE manager_id = mgr_no;DBMS_OUTPUT.PUT_LINE('Number of employees deleted: ' || TO_CHAR(SQL%ROWCOUNT));END;Chú ý khi[r]
Trong các hàm làm việc với từng cột hay hàm vô hướng (scalar function). Các hàm loại này trả về trị nullkhi có tham số NULL, trừ hàm NVL và TRANSLATE có thể trả về giá trị thực.Cú pháp của hàm NVL:NVL (DATECOLUMN,’01-01-2001’)NVL(NUMBERCOLUMN, 9)NVL(CHARCOLUMN,’STRING’)NVL(comm,0) trả về trị 0 khi c[r]
GMAT Vocabulary Flash Cards @ englishpdf.com andenglishteststore.com File 230enthusiastic(adj) Full of zeal and fervor.--------------------entirety(n) A complete thing.--------------------entomology(n) The branch of zoology that treatsof insects.--------------------entrails(n) pl. The[r]
English Vocabulary Flash Cards @ englishpdf.com andenglishteststore.com File 264heinous(adj) Odiously sinful.--------------------hemorrhage(n) Discharge of blood from a rupturedor wounded blood-vessel.--------------------hemorrhoids(n) pl. Tumors composed of enlargedand thickened blood[r]
Most colleges will provide various options for accessing Oracle software to execute SQL statements required in this text, typically via the internet andor using college computer labs. Contact your instructor first to identify the options available. If you choose to install Oracle 12c on your own com[r]