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Add DECLARE STATEMENT support to ECPG.

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DECLARE STATEMENT is a statement that lets users declare an identifier
pointing at a connection.  This identifier will be used in other embedded
dynamic SQL statement such as PREPARE, EXECUTE, DECLARE CURSOR and so on.
When connecting to a non-default connection, the AT clause can be used in
a DECLARE STATEMENT once and is no longer needed in every dynamic SQL
statement.  This makes ECPG applications easier and more efficient.  Moreover,
writing code without designating connection explicitly improves portability.

Authors: Ideriha-san ("Ideriha, Takeshi" <ideriha.takeshi@jp.fujitsu.com>)
         Kuroda-san ("Kuroda, Hayato" <kuroda.hayato@jp.fujitsu.com>)

Discussion: https://postgr.es/m4E72940DA2BF16479384A86D54D0988A565669DF@G01JPEXMBKW04
This commit is contained in:
Michael Meskes
2019-02-16 10:55:17 +01:00
parent 02a6a54ecd
commit bd7c95f0c1
45 changed files with 2334 additions and 173 deletions
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7
src/interfaces/ecpg/ecpglib/error.c
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@ -200,6 +200,13 @@ ecpg_raise(int line, int code, const char *sqlstate, const char *str)
ecpg_gettext("could not connect to database \"%s\" on line %d"), str, line);
break;
case ECPG_INVALID_CURSOR:
snprintf(sqlca->sqlerrm.sqlerrmc, sizeof(sqlca->sqlerrm.sqlerrmc),
/*------
translator: this string will be truncated at 149 characters expanded. */
ecpg_gettext("The cursor is invalid on line %d"),line);
break;
default:
snprintf(sqlca->sqlerrm.sqlerrmc, sizeof(sqlca->sqlerrm.sqlerrmc),
/*------