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Add transforms feature

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This provides a mechanism for specifying conversions between SQL data
types and procedural languages.  As examples, there are transforms
for hstore and ltree for PL/Perl and PL/Python.

reviews by Pavel Stěhule and Andres Freund
This commit is contained in:
Peter Eisentraut
2015-04-26 10:33:14 -04:00
parent f320cbb615
commit cac7658205
101 changed files with 6034 additions and 2811 deletions
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2
src/interfaces/ecpg/preproc/ecpg.tokens
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@ -12,7 +12,7 @@
SQL_LONG SQL_NULLABLE SQL_OCTET_LENGTH
SQL_OPEN SQL_OUTPUT SQL_REFERENCE
SQL_RETURNED_LENGTH SQL_RETURNED_OCTET_LENGTH SQL_SCALE
SQL_SECTION SQL_SHORT SQL_SIGNED SQL_SQL SQL_SQLERROR
SQL_SECTION SQL_SHORT SQL_SIGNED SQL_SQLERROR
SQL_SQLPRINT SQL_SQLWARNING SQL_START SQL_STOP
SQL_STRUCT SQL_UNSIGNED SQL_VAR SQL_WHENEVER

5
src/interfaces/ecpg/preproc/ecpg.trailer
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@ -1005,7 +1005,7 @@ ecpg_using: USING using_list { $$ = EMPTY; }
| using_descriptor { $$ = $1; }
;
using_descriptor: USING SQL_SQL SQL_DESCRIPTOR quoted_ident_stringvar
using_descriptor: USING SQL_P SQL_DESCRIPTOR quoted_ident_stringvar
{
add_variable_to_head(&argsinsert, descriptor_variable($4,0), &no_indicator);
$$ = EMPTY;
@ -1017,7 +1017,7 @@ using_descriptor: USING SQL_SQL SQL_DESCRIPTOR quoted_ident_stringvar
}
;
into_descriptor: INTO SQL_SQL SQL_DESCRIPTOR quoted_ident_stringvar
into_descriptor: INTO SQL_P SQL_DESCRIPTOR quoted_ident_stringvar
{
add_variable_to_head(&argsresult, descriptor_variable($4,1), &no_indicator);
$$ = EMPTY;
@ -1494,7 +1494,6 @@ ECPGKeywords_vanames: SQL_BREAK { $$ = mm_strdup("break"); }
| SQL_RETURNED_OCTET_LENGTH { $$ = mm_strdup("returned_octet_length"); }
| SQL_SCALE { $$ = mm_strdup("scale"); }
| SQL_SECTION { $$ = mm_strdup("section"); }
| SQL_SQL { $$ = mm_strdup("sql"); }
| SQL_SQLERROR { $$ = mm_strdup("sqlerror"); }
| SQL_SQLPRINT { $$ = mm_strdup("sqlprint"); }
| SQL_SQLWARNING { $$ = mm_strdup("sqlwarning"); }

2
src/interfaces/ecpg/preproc/ecpg_keywords.c
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@ -63,8 +63,6 @@ static const ScanKeyword ECPGScanKeywords[] = {
{"section", SQL_SECTION, 0},
{"short", SQL_SHORT, 0},
{"signed", SQL_SIGNED, 0},
{"sql", SQL_SQL, 0}, /* strange thing, used for into sql descriptor
* MYDESC; */
{"sqlerror", SQL_SQLERROR, 0},
{"sqlprint", SQL_SQLPRINT, 0},
{"sqlwarning", SQL_SQLWARNING, 0},