PostgreSQL can be extended by the user in many ways, for example by adding new • data types 1. http://s2k-ftp.CS.Berkeley.EDU:8000/postgres/postgres.html xlviii Preface • functions • operators and support was taking up large amounts of time that should have been 2. http://www.informix.com/ 3. http://www.ibm.com/ 4. http://meteora.ucsd.edu/s2k/s2k_home.html xlix Preface devoted to database tation or through the mailing lists. Consider contributing your knowledge back. Read the mailing 5. http://www.postgresql.org li Preface lists and answer questions. If you learn something which is not

by adding new • data types • functions • operators • aggregate functions • index methods 1. http://s2k-ftp.CS.Berkeley.EDU:8000/postgres/postgres.html xliv Preface • procedural languages And burden, the Berkeley POSTGRES project officially ended with Version 4.2. 2. http://www.informix.com/ 3. http://www.ibm.com/ 4. http://meteora.ucsd.edu/s2k/s2k_home.html xlv Preface 2.2. Postgres95 In effective fashion. No one is required to follow them but doing so tends to be to everyone’s advantage. 5. http://www.postgresql.org xlvii Preface We cannot promise to fix every bug right away. If the bug is

by adding new • data types • functions • operators • aggregate functions • index methods 1. http://db.cs.berkeley.edu/postgres.html xlii Preface • procedural languages And because of the liberal burden, the Berkeley POSTGRES project officially ended with Version 4.2. 2. http://www.informix.com/ 3. http://www.ibm.com/ 4. http://meteora.ucsd.edu/s2k/s2k_home.html xliii Preface 2.2. Postgres95 In take up a discussion about your bug report on pgsql-hackers, if the problem needs more review. 9. http://www.chiark.greenend.org.uk/~sgtatham/bugs.html 10. https://www.postgresql.org/ xlviii Preface

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PostgreSQL can be extended by the user in many ways, for example by adding new • data types 1. http://db.cs.berkeley.edu/postgres.html xlv Preface • functions • operators • aggregate functions and support was taking up large amounts of time that should have been 2. http://www.informix.com/ 3. http://www.ibm.com/ 4. http://meteora.ucsd.edu/s2k/s2k_home.html xlvi Preface devoted to database requested to use a descriptive subject for your email message, perhaps parts of the error message. 9. http://www.chiark.greenend.org.uk/~sgtatham/bugs.html li Preface Another method is to fill in the bug

burden, the Berkeley POSTGRES project officially ended with Version 4.2. 2. http://www.informix.com/ 3. http://www.ibm.com/ 4. http://meteora.ucsd.edu/s2k/s2k_home.html xliv Preface 2.2. Postgres95 In take up a discussion about your bug report on pgsql-hackers, if the problem needs more review. 9. http://www.chiark.greenend.org.uk/~sgtatham/bugs.html 10. https://www.postgresql.org/ xlix Preface (user_name = current_user); In a SELECT command, these two policies are combined using OR, with the net effect being that all rows can be selected. In other command types, only the second policy applies

and support was taking up large amounts of time that should have been 2. http://www.informix.com/ 3. http://www.ibm.com/ 4. http://meteora.ucsd.edu/s2k/s2k_home.html xlvii Preface devoted to database requested to use a descriptive subject for your email message, perhaps parts of the error message. 9. http://www.chiark.greenend.org.uk/~sgtatham/bugs.html lii Preface Another method is to fill in the bug (user_name = current_user); In a SELECT command, these two policies are combined using OR, with the net effect being that all rows can be selected. In other command types, only the second policy applies

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new Tcl commands to interface Tcl programs with the Postgres95 server. 2 http://www.informix.com/ 3 http://www.ibm.com/ 4 http://meteora.ucsd.edu/s2k/s2k_home.html xxxi Preface • The large-object interface bug report this way causes it to be mailed to the mailing list. 9 http://www.chiark.greenend.org.uk/~sgtatham/bugs.html 10 https://www.postgresql.org/ xxxv Preface If (user_name = current_user); In a SELECT command, these two policies are combined using OR, with the net effect being that all rows can be selected. In other command types, only the second policy applies