mirror of
https://git.postgresql.org/git/postgresql.git
synced 2025-01-18 18:44:06 +08:00
Update to my2pg version 1.28, add docs, update URL for newest version.
Create diff of custom changes Tom made to the utility for CREATE FUNCTION. This will make moving this utility out of CVS easier.
This commit is contained in:
Bruce Momjian
parent
085fa8ac48
commit
13b63d3764
@ -2,7 +2,7 @@ Here are two conversion utilities for MySQL dumps. Use the one you prefer.
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The most recent version of my2pg.pl can be obtained from:
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http://ziet.zhitomir.ua/~fonin/code/
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http://www.omnistarinc.com/~fonin/downloads.php#my2pg
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Another tool, mysql2pgsql, can be found at:
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112
contrib/mysql/my2pg.diff
Normal file
112
contrib/mysql/my2pg.diff
Normal file
@ -0,0 +1,112 @@
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*** /laptop/my2pg.pl Mon Apr 19 18:51:44 2004
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--- my2pg.pl Mon Apr 19 18:59:09 2004
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***************
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*** 38,43 ****
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--- 38,50 ----
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# $My2pg: my2pg.pl,v 1.28 2001/12/06 19:32:20 fonin Exp $
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# $Id: my2pg.diff,v 1.1 2004/04/19 23:18:12 momjian Exp $
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+ # Custom patch
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+ # Revision 1.9 2002/08/22 00:01:39 tgl
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+ # Add a bunch of pseudo-types to replace the behavior formerly associated
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+ # with OPAQUE, as per recent pghackers discussion. I still want to do some
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+ # more work on the 'cstring' pseudo-type, but I'm going to commit the bulk
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+ # of the changes now before the tree starts shifting under me ...
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+
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#
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# $Log: my2pg.diff,v $
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# Revision 1.1 2004/04/19 23:18:12 momjian
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# Update to my2pg version 1.28, add docs, update URL for newest version.
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#
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# Create diff of custom changes Tom made to the utility for CREATE
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# FUNCTION.
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#
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# This will make moving this utility out of CVS easier.
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#
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# Revision 1.28 2002/11/30 12:03:48 fonin
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***************
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*** 332,342 ****
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print LIBTYPES "\n * Types for table ".uc($table_name);
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print LIBTYPES "\n */\n";
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! $types.="\nCREATE FUNCTION $typename"."_in (opaque)
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RETURNS $typename
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AS '$libtypename'
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LANGUAGE 'c'
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! WITH (ISCACHABLE);\n";
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# creating output function
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my $func_out="
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--- 339,349 ----
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print LIBTYPES "\n * Types for table ".uc($table_name);
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print LIBTYPES "\n */\n";
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! $types.="\nCREATE FUNCTION $typename"."_in (cstring)
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RETURNS $typename
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AS '$libtypename'
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LANGUAGE 'c'
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! WITH (ISSTRICT, ISCACHABLE);\n";
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# creating output function
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my $func_out="
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***************
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*** 386,396 ****
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return (*a>=*b);
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}\n";
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! $types.="\nCREATE FUNCTION $typename"."_out (opaque)
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! RETURNS opaque
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AS '$libtypename'
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LANGUAGE 'c'
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! WITH (ISCACHABLE);\n";
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$types.="\nCREATE TYPE $typename (
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internallength = 2,
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--- 393,403 ----
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return (*a>=*b);
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}\n";
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! $types.="\nCREATE FUNCTION $typename"."_out ($typename)
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! RETURNS cstring
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AS '$libtypename'
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LANGUAGE 'c'
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! WITH (ISSTRICT, ISCACHABLE);\n";
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$types.="\nCREATE TYPE $typename (
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internallength = 2,
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***************
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*** 532,538 ****
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print LIBTYPES "\n * Types for table ".uc($table_name);
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print LIBTYPES "\n */\n";
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! $types.="\nCREATE FUNCTION $typename"."_in (opaque)
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RETURNS $typename
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AS '$libtypename'
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LANGUAGE 'c';\n";
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--- 539,545 ----
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print LIBTYPES "\n * Types for table ".uc($table_name);
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print LIBTYPES "\n */\n";
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! $types.="\nCREATE FUNCTION $typename"."_in (cstring)
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RETURNS $typename
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AS '$libtypename'
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LANGUAGE 'c';\n";
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***************
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*** 584,591 ****
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\n";
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! $types.="\nCREATE FUNCTION $typename"."_out (opaque)
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! RETURNS opaque
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AS '$libtypename'
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LANGUAGE 'c';\n";
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--- 591,598 ----
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\n";
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! $types.="\nCREATE FUNCTION $typename"."_out ($typename)
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! RETURNS cstring
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AS '$libtypename'
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LANGUAGE 'c';\n";
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193
contrib/mysql/my2pg.html
Executable file
193
contrib/mysql/my2pg.html
Executable file
@ -0,0 +1,193 @@
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<HTML>
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<HEAD>
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<TITLE>my2pg - MySQL -> PostgreSQL dump conversion utility.</TITLE>
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<LINK REV="made" HREF="mailto:bhcompile@daffy.perf.redhat.com">
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</HEAD>
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<BODY>
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<A NAME="__index__"></A>
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<!-- INDEX BEGIN -->
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<UL>
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<LI><A HREF="#name">NAME</A></LI>
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<LI><A HREF="#syntax">SYNTAX</A></LI>
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<LI><A HREF="#overview">OVERVIEW</A></LI>
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<LI><A HREF="#commandline options">COMMAND-LINE OPTIONS</A></LI>
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<LI><A HREF="#side effects">SIDE EFFECTS</A></LI>
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<LI><A HREF="#bugs">BUGS</A></LI>
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<LI><A HREF="#authors">AUTHORS</A></LI>
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<LI><A HREF="#credits">CREDITS</A></LI>
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<LI><A HREF="#license">LICENSE</A></LI>
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</UL>
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<!-- INDEX END -->
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<HR>
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<P>
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<H1><A NAME="name">NAME</A></H1>
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<P>my2pg - MySQL -> PostgreSQL dump conversion utility.</P>
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<P>
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<HR>
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<H1><A NAME="syntax">SYNTAX</A></H1>
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<PRE>
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mysqldump db | ./my2pg.pl [-nds] > pgsqldump.sql
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vi libtypes.c
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make
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psql database < pgsqldump.txt
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where</PRE>
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<DL>
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<DT><STRONG><A NAME="item_pgsqldump%2Esql"><EM>pgsqldump.sql</EM></A></STRONG><BR>
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<DD>
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- file suitable for loading into PostgreSQL.
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<P></P>
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<DT><STRONG><A NAME="item_libtypes%2Ec"><EM>libtypes.c</EM></A></STRONG><BR>
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<DD>
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- C source for emulated MySQL types (ENUM, SET) generated by <STRONG>my2pg</STRONG>
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<P></P></DL>
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<P>
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<HR>
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<H1><A NAME="overview">OVERVIEW</A></H1>
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<P><STRONG>my2pg</STRONG> utility attempts to convert MySQL database dump to Postgres's one.
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<STRONG>my2pg</STRONG> performs such conversions:</P>
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<UL>
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<LI><STRONG><A NAME="item_Type_conversion%2E">Type conversion.</A></STRONG><BR>
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It tries to find proper Postgres
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type for each column.
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Unknown types are silently pushing to output dump;
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ENUM and SET types implemented via user types
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(C source for such types can be found in
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<STRONG>libtypes.c</STRONG> file);
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<P></P>
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<LI><STRONG><A NAME="item_Encloses_identifiers_into_double_quotes%2E">Encloses identifiers into double quotes.</A></STRONG><BR>
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All column and table
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names should be enclosed to double-quotes to prevent
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conflict with reserved SQL keywords;
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<P></P>
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<LI><STRONG><A NAME="item_Converting">Converting</A></STRONG><BR>
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AUTO_INCREMENT fields to SERIAL. Actually, creating the sequence and
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setting default value to nextval('seq'), well, you know :)
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<P></P>
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<LI><STRONG>Converting</STRONG><BR>
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<CODE>KEY(field)</CODE> to CREATE INDEX i_field on table (field);
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<P></P>
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<LI><STRONG><A NAME="item_The_same">The same</A></STRONG><BR>
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for UNIQUE keys;
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<P></P>
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<LI><STRONG><A NAME="item_Indices">Indices</A></STRONG><BR>
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are creating AFTER rows insertion (to speed up the load);
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<P></P>
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<LI><STRONG><A NAME="item_Translates_%27%23%27">Translates '#'</A></STRONG><BR>
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MySQL comments to ANSI SQL '--'
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<P></P></UL>
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<P>It encloses dump in transaction block to prevent single errors
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during data load.</P>
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<P>
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<HR>
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<H1><A NAME="commandline options">COMMAND-LINE OPTIONS</A></H1>
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<P>My2pg takes the following command-line options:</P>
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<DL>
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<DT><STRONG><A NAME="item_%2Dn">-n</A></STRONG><BR>
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<DD>
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Convert *CHAR DEFAULT '' NOT NULL types to *CHAR NULL.
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Postgres can't load empty '' strings in NOT NULL fields.
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<P></P>
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<DT><STRONG><A NAME="item_%2Dd">-d</A></STRONG><BR>
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<DD>
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Add double quotes around table and column names
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<P></P>
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<DT><STRONG><A NAME="item_%2Dh">-h</A></STRONG><BR>
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<DD>
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Show usage banner.
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<P></P>
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<DT><STRONG><A NAME="item_%2Ds">-s</A></STRONG><BR>
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<DD>
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Do not attempt to convert data. Currently my2pg only tries to convert
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date and time data.
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<P></P></DL>
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<P>
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<HR>
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<H1><A NAME="side effects">SIDE EFFECTS</A></H1>
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<UL>
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<LI><STRONG><A NAME="item_creates">creates</A></STRONG><BR>
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file <STRONG>libtypes.c</STRONG> in current directory
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overwriting existed file without any checks;
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<P></P>
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<LI><STRONG><A NAME="item_the_same">the same</A></STRONG><BR>
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for Makefile.
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<P></P></UL>
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<P>
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<HR>
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<H1><A NAME="bugs">BUGS</A></H1>
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<P>Known bugs are:</P>
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<UL>
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<LI><STRONG><A NAME="item_Possible_problems_with_the_timestamp_data%2E">Possible problems with the timestamp data.</A></STRONG><BR>
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PostgreSQL does not accept incorrect date/time values like <STRONG>2002-00-15</STRONG>,
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while MySQL does not care about that. Currently my2pg cannot handle this
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issue. You should care yourself to convert such a data.
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<P></P>
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<LI><STRONG><A NAME="item_Use_%2Ds_option_if_your_numeric_data_are_broken_du">Use -s option if your numeric data are broken during conversion.</A></STRONG><BR>
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My2pg attempts to convert MySQL timestamps of the form <STRONG>yyyymmdd</STRONG> to
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<STRONG>yyyy-mm-dd</STRONG> and <STRONG>yyyymmddhhmmss</STRONG> to <STRONG>yyyy-mm-dd hh:mm:ss</STRONG>. It performs
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some heuristic checks to ensure that the month,day,hour,minutes and seconds have
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values from the correct range (0..12, 0..31, 0..23, 0..59, 0..59 respectively).
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It is still possible that your numeric values that satisfy these conditions
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will get broken.
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<P></P>
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<LI><STRONG><A NAME="item_Possible_problems_with_enclosing_identifiers_in_do">Possible problems with enclosing identifiers in double quotes.</A></STRONG><BR>
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All identifiers such as table and column names should be enclosed in double
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quotes. Program can't handle upper-case identifiers,
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like DBA. Lower-case identifiers are OK.
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<P></P>
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<LI><STRONG><A NAME="item_SET_type_emulation_is_not_full%2E_LIKE_operation_o">SET type emulation is not full. LIKE operation on</A></STRONG><BR>
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SETs, raw integer input values should be implemented
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<P></P>
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<LI><STRONG><A NAME="item_Makefile"><STRONG>Makefile</STRONG></A></STRONG><BR>
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generated during output is
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platform-dependent and surely works only on
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Linux/gcc (FreeBSD/gcc probably works as well - not tested)
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<P></P>
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<LI><STRONG><A NAME="item_Generated_libtypes%2Ec_contain_line">Generated <STRONG>libtypes.c</STRONG> contain line</A></STRONG><BR>
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<PRE>
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#include <postgres.h></PRE>
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<P>This file may be located not in standard compiler
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include path, you need to check it before compiling.</P>
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</UL>
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<P>
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<HR>
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<H1><A NAME="authors">AUTHORS</A></H1>
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<P><STRONG>(c) 2000-2002 Maxim V. Rudensky (<A HREF="mailto:fonin@omnistaronline.com">fonin@ziet.zhitomir.ua</A>)</STRONG> (developer, maintainer)</P>
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<P><STRONG>(c) 2000 Valentine V. Danilchuk (<A HREF="mailto:valdan@ziet.zhitomir.ua">valdan@ziet.zhitomir.ua</A>)</STRONG> (original script)</P>
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<P>
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<HR>
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<H1><A NAME="credits">CREDITS</A></H1>
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<P>Great thanks to all those people who provided feedback and make development
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of this tool easier.</P>
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<P>Jeff Waugh <<A HREF="mailto:jaw@ic.net">jaw@ic.net</A>></P>
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<P>Joakim Lemström <<A HREF="mailto:jocke@bytewize.com">jocke@bytewize.com</A>> || <<A HREF="mailto:buddyh19@hotmail.com">buddyh19@hotmail.com</A>></P>
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<P>Yunliang Yu <<A HREF="mailto:yu@math.duke.edu">yu@math.duke.edu</A>></P>
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<P>Brad Hilton <<A HREF="mailto:bhilton@vpop.net">bhilton@vpop.net</A>></P>
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<P>If you are not listed here please write to me.</P>
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<P>
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<HR>
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<H1><A NAME="license">LICENSE</A></H1>
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<P><STRONG>BSD</STRONG></P>
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</BODY>
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</HTML>
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@ -36,10 +36,25 @@
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# SUCH DAMAGE.
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#
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# $My2pg: my2pg.pl,v 1.28 2001/12/06 19:32:20 fonin Exp $
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# $Id: my2pg.pl,v 1.12 2004/04/19 23:11:49 momjian Exp $
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# $Id: my2pg.pl,v 1.13 2004/04/19 23:18:12 momjian Exp $
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# Custom patch
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# Revision 1.9 2002/08/22 00:01:39 tgl
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# Add a bunch of pseudo-types to replace the behavior formerly associated
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# with OPAQUE, as per recent pghackers discussion. I still want to do some
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# more work on the 'cstring' pseudo-type, but I'm going to commit the bulk
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# of the changes now before the tree starts shifting under me ...
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#
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# $Log: my2pg.pl,v $
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# Revision 1.13 2004/04/19 23:18:12 momjian
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# Update to my2pg version 1.28, add docs, update URL for newest version.
|
||||
#
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# Create diff of custom changes Tom made to the utility for CREATE
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# FUNCTION.
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#
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# This will make moving this utility out of CVS easier.
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#
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# Revision 1.12 2004/04/19 23:11:49 momjian
|
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# Update to my2pg 1.28, from:
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#
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@ -337,11 +352,11 @@ int2* $typename"."_in (char *str) {
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print LIBTYPES "\n * Types for table ".uc($table_name);
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print LIBTYPES "\n */\n";
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$types.="\nCREATE FUNCTION $typename"."_in (opaque)
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$types.="\nCREATE FUNCTION $typename"."_in (cstring)
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RETURNS $typename
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AS '$libtypename'
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LANGUAGE 'c'
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WITH (ISCACHABLE);\n";
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WITH (ISSTRICT, ISCACHABLE);\n";
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|
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# creating output function
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my $func_out="
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@ -391,11 +406,11 @@ bool $typename"."_ge(int2* a, int2* b) {
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return (*a>=*b);
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}\n";
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$types.="\nCREATE FUNCTION $typename"."_out (opaque)
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RETURNS opaque
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$types.="\nCREATE FUNCTION $typename"."_out ($typename)
|
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RETURNS cstring
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AS '$libtypename'
|
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LANGUAGE 'c'
|
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WITH (ISCACHABLE);\n";
|
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WITH (ISSTRICT, ISCACHABLE);\n";
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|
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$types.="\nCREATE TYPE $typename (
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internallength = 2,
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@ -537,7 +552,7 @@ $typesize* $typename"."_in (char *str) {
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print LIBTYPES "\n * Types for table ".uc($table_name);
|
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print LIBTYPES "\n */\n";
|
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|
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$types.="\nCREATE FUNCTION $typename"."_in (opaque)
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$types.="\nCREATE FUNCTION $typename"."_in (cstring)
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RETURNS $typename
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AS '$libtypename'
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LANGUAGE 'c';\n";
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@ -589,8 +604,8 @@ $typesize find_in_set($typesize *a, $typesize *b) {
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\n";
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$types.="\nCREATE FUNCTION $typename"."_out (opaque)
|
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RETURNS opaque
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$types.="\nCREATE FUNCTION $typename"."_out ($typename)
|
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RETURNS cstring
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AS '$libtypename'
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LANGUAGE 'c';\n";
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@ -762,7 +777,7 @@ close(LIBTYPES);
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open(MAKE,">Makefile");
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print MAKE "#
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# My2Pg \$Revision: 1.12 $ \translated dump
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# My2Pg \$Revision: 1.13 $ \translated dump
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# Makefile
|
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#
|
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|
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Block a user