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+
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+ 45-57.
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+ Systems¡±ÀïÕÒµ½ÕâƪÎÄÕ¡£
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+ FROM tab
+ WHERE lower(col) = 'abc';
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+ CREATE INDEX tabindex ON tab (lower(col));
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+ ÔÚ´æ´¢ÏÞÖÆÁË×î´ó³¤¶ÈµÄ±ä³¤×Ö·û´®ÊÇ×îºÃµÄ¡£TEXT
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+ CREATE TABLE person (
+ id SERIAL,
+ name TEXT
+ );
+ »á×Ô¶¯×ª»»Îª£º
+
+ CREATE SEQUENCE person_id_seq;
+ CREATE TABLE person (
+ id INT4 NOT NULL DEFAULT nextval('person_id_seq'),
+ name TEXT
+ );
+ CREATE UNIQUE INDEX person_id_key ON person ( id );
+ ²Î¿¼ create_sequence ÊÖ²áÒ³»ñÈ¡¹ØÓÚÐòÁеĸü¶àÐÅÏ¢¡£Ä㻹¿ÉÒÔÓÃÿÐеÄ
+ oid ×Ö¶Î×÷Ϊһ¸öΨһֵ¡£²»¹ý£¬Èç¹ûÄãÐèÒªÇãµ¹ºÍÖØÔØÊý¾Ý¿â£¬ÄãÐèҪʹÓÃ
+ pg_dump µÄ -o Ñ¡Ïî»òÕß COPY WITH OIDS Ñ¡ÏîÒÔ±£Áô OID¡£
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+ Öµ£¬È»ºóÔÙÏÔʽ²åÈ롣ʹÓà 4.15.1 ÀïµÄÀý±í£¬¿ÉÓÃαÂëÕâÑùÃèÊö£º
+ new_id = execute("SELECT nextval('person_id_seq')");
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projects / postgresql.git / commitdiff