
Java + SQL Unit 4
Presentation
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Computers
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University
•
Hard
Kittisay SENGTHONG
FREE Resource
11 Slides • 0 Questions
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Java + SQL Unit 4
ເພີ່ມຂໍ້ມູນ Insert Data
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#. ເປັນຫຍັງຕ້ອງຮຽນ
1. ກຳນົດເຫດການ
2. ກວດສອບຄວາມຖືກຕ້ອງຂໍ້ມູນ
3. ສ້າງ Method InsertUser()
4. ກຽມຄຳສັ່ງ SQL Insert
5. ຮັບຂໍ້ມູນຈາກ Textfield
6. ເພີ່ມຂໍ້ມູນ
7. ສະແດງຂໍ້ມູນໃໝ່
8. ລ້າງຂໍ້ມູນເກົ່າ
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1. ກຳນົດເຫດການ
ອະທິບາຍ: ກຳນົດເຫດການຄິດໃຫ້ກັບປຸ່ມເພີ່ມ
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2. ກວດສອບຄວາມຖືກຕ້ອງຂໍ້ມູນ
ອະທິບາຍ: ເຮົາຈະກວດສອບວ່າຜູ້ໃຊ້ງານໄດ້ມີການປ້ອນຂໍ້ມູນຄົວຖວດຫຼືບໍ່ ກ່ອນທີ່ຈະບັນທຶກຂໍ້ມູນ ໂດຍໃຊ້ຄຳສັ່ງ if else
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3. ສ້າງ Method InsertUser()
ອະທິບາຍ: ເຮົາຈະສ້າງ Method InsertUser() ເພື່ອເກັບຄຳສັ່ງກ່ຽວກັບການເພີ່ມຂໍ້ມູນເອົາໄວ້
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4. ກຽມຄຳສັ່ງ SQL Insert
ອະທິບາຍ: ເຮົາຈະຂຽນຄຳສັ່ງ SQL ໃນສ່ວນຂອງ Try catch ຂຽນຄຳສັ່ງ SQL INSERT
INSERT INTO tb_user VALUES(?,?,?,?,?)
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5. ຮັບຂໍ້ມູນຈາກ Textfield
ອະທິບາຍ: ເຮົາຈະຮັບຂໍ້ມູນຈາກ Textfield ໂດຍໃຊ້ preparestatement ເພື່ນແທນຄ່າທີ່ໃຫ້ໃຫ້ກັບ ? ທັງໝົດ 5 ຕົວຂອງຄຳສັ່ງ SQL
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6. ເພີ່ມຂໍ້ມູນ
ອະທິບາຍ: ເຮົາຈະສົ່ງຄຳສັ່ງຂອງ SQL ທີ່ pre ຈັດເກັບໄວ້ ມາປະມວນຜົນເພື່ອພີ່ມຂໍ້ມູນລົງໄປໃນຖານຂໍ້ມູນດ້ວຍ executeUpdate();
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7. ສະແດງຂໍ້ມູນໃໝ່
ອະທິບາຍ: ເຮົາຈະເອີ້ນຄຳສັ່ງທີ່ໃຊ້ສະແດງຜົນຂື້ນມາເພື່ອໃຫ້ສະແດງຂໍ້ມູນໃນຕະລາງອີກເທື່ອ 1 ເພື່ອໃຫ້ຂໍ້ມູນໃໝ່ທີ່ເພີ່ມສະແດງຢູ່ຕະລາງ
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8. ລ້າງຂໍ້ມູນເກົ່າ
ອະທິບາຍ:
ຂັ້ນຕອນທີ່ 1 ສ້າງຊຸດຄຳສັ່ງ Method ທີ່ມີຊື່ວ່າ ClearData();
ຂັ້ນຕອນທີ 2 ກົດປຸ່ມ Alt + Enter ກົດ Enter
ຂັ້ນຕອນທີ 3 ຂຽນຄຳສັ່ງຕາຮູບຂວາມື
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Java + SQL Unit 4
ເພີ່ມຂໍ້ມູນ Insert Data
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