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| 1 | +drop table Ӌ��C���Z; |
| 2 | +create table Ӌ��C���Z (���Z text, ����`�� varchar, �俼1A���� char(16)); |
| 3 | +create index Ӌ��C���Zindex1 on Ӌ��C���Z using btree (���Z); |
| 4 | +create index Ӌ��C���Zindex2 on Ӌ��C���Z using hash (����`��); |
| 5 | +WARNING: hash indexes are not WAL-logged and their use is discouraged |
| 6 | +insert into Ӌ��C���Z values('����ԥ�`���ǥ����ץ쥤','�CA01��'); |
| 7 | +insert into Ӌ��C���Z values('����ԥ�`������ե��å���','��B10��'); |
| 8 | +insert into Ӌ��C���Z values('����ԥ�`���ץ�����ީ`','��Z01��'); |
| 9 | +vacuum Ӌ��C���Z; |
| 10 | +select * from Ӌ��C���Z; |
| 11 | + ���Z | ����`�� | �俼1a���� |
| 12 | +----------------------------+------------+------------ |
| 13 | + ����ԥ�`���ǥ����ץ쥤 | �CA01�� | |
| 14 | + ����ԥ�`������ե��å��� | ��B10�� | |
| 15 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | |
| 16 | +(3 rows) |
| 17 | + |
| 18 | +select * from Ӌ��C���Z where ����`�� = '��Z01��'; |
| 19 | + ���Z | ����`�� | �俼1a���� |
| 20 | +--------------------------+------------+------------ |
| 21 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | |
| 22 | +(1 row) |
| 23 | + |
| 24 | +select * from Ӌ��C���Z where ����`�� ~* '��z01��'; |
| 25 | + ���Z | ����`�� | �俼1a���� |
| 26 | +--------------------------+------------+------------ |
| 27 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | |
| 28 | +(1 row) |
| 29 | + |
| 30 | +select * from Ӌ��C���Z where ����`�� like '_Z01_'; |
| 31 | + ���Z | ����`�� | �俼1a���� |
| 32 | +--------------------------+------------+------------ |
| 33 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | |
| 34 | +(1 row) |
| 35 | + |
| 36 | +select * from Ӌ��C���Z where ����`�� like '_Z%'; |
| 37 | + ���Z | ����`�� | �俼1a���� |
| 38 | +--------------------------+------------+------------ |
| 39 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | |
| 40 | +(1 row) |
| 41 | + |
| 42 | +select * from Ӌ��C���Z where ���Z ~ '����ԥ�`��[�ǥ�]'; |
| 43 | + ���Z | ����`�� | �俼1a���� |
| 44 | +----------------------------+------------+------------ |
| 45 | + ����ԥ�`���ǥ����ץ쥤 | �CA01�� | |
| 46 | + ����ԥ�`������ե��å��� | ��B10�� | |
| 47 | +(2 rows) |
| 48 | + |
| 49 | +select * from Ӌ��C���Z where ���Z ~* '����ԥ�`��[�ǥ�]'; |
| 50 | + ���Z | ����`�� | �俼1a���� |
| 51 | +----------------------------+------------+------------ |
| 52 | + ����ԥ�`���ǥ����ץ쥤 | �CA01�� | |
| 53 | + ����ԥ�`������ե��å��� | ��B10�� | |
| 54 | +(2 rows) |
| 55 | + |
| 56 | +select *,character_length(���Z) from Ӌ��C���Z; |
| 57 | + ���Z | ����`�� | �俼1a���� | character_length |
| 58 | +----------------------------+------------+------------+------------------ |
| 59 | + ����ԥ�`���ǥ����ץ쥤 | �CA01�� | | 12 |
| 60 | + ����ԥ�`������ե��å��� | ��B10�� | | 13 |
| 61 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | | 12 |
| 62 | +(3 rows) |
| 63 | + |
| 64 | +select *,octet_length(���Z) from Ӌ��C���Z; |
| 65 | + ���Z | ����`�� | �俼1a���� | octet_length |
| 66 | +----------------------------+------------+------------+-------------- |
| 67 | + ����ԥ�`���ǥ����ץ쥤 | �CA01�� | | 36 |
| 68 | + ����ԥ�`������ե��å��� | ��B10�� | | 39 |
| 69 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | | 36 |
| 70 | +(3 rows) |
| 71 | + |
| 72 | +select *,position('��' in ���Z) from Ӌ��C���Z; |
| 73 | + ���Z | ����`�� | �俼1a���� | position |
| 74 | +----------------------------+------------+------------+---------- |
| 75 | + ����ԥ�`���ǥ����ץ쥤 | �CA01�� | | 7 |
| 76 | + ����ԥ�`������ե��å��� | ��B10�� | | 0 |
| 77 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | | 0 |
| 78 | +(3 rows) |
| 79 | + |
| 80 | +select *,substring(���Z from 10 for 4) from Ӌ��C���Z; |
| 81 | + ���Z | ����`�� | �俼1a���� | substring |
| 82 | +----------------------------+------------+------------+----------- |
| 83 | + ����ԥ�`���ǥ����ץ쥤 | �CA01�� | | �ץ쥤 |
| 84 | + ����ԥ�`������ե��å��� | ��B10�� | | ���å��� |
| 85 | + ����ԥ�`���ץ�����ީ` | ��Z01�� | | ��ީ` |
| 86 | +(3 rows) |
| 87 | + |
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