diff options
Diffstat (limited to 'doc/src/sgml/pltcl.sgml')
| -rw-r--r-- | doc/src/sgml/pltcl.sgml | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/doc/src/sgml/pltcl.sgml b/doc/src/sgml/pltcl.sgml index 33e24fa0ea..9aa3f2d630 100644 --- a/doc/src/sgml/pltcl.sgml +++ b/doc/src/sgml/pltcl.sgml @@ -1,4 +1,4 @@ -<!-- $PostgreSQL: pgsql/doc/src/sgml/pltcl.sgml,v 2.43 2007/01/30 22:29:23 momjian Exp $ --> +<!-- $PostgreSQL: pgsql/doc/src/sgml/pltcl.sgml,v 2.44 2007/01/31 20:56:18 momjian Exp $ --> <chapter id="pltcl"> <title>PL/Tcl - Tcl Procedural Language</title> @@ -39,12 +39,12 @@ provides no way to access internals of the database server or to gain OS-level access under the permissions of the <productname>PostgreSQL</productname> server process, as a C - function can do. Thus, unprivileged database users may be trusted + function can do. Thus, unprivileged database users can be trusted to use this language; it does not give them unlimited authority. </para> <para> The other notable implementation restriction is that Tcl functions - may not be used to create input/output functions for new data + cannot be used to create input/output functions for new data types. </para> <para> @@ -325,7 +325,7 @@ spi_exec -array C "SELECT * FROM pg_class" { PL/Tcl</></> </para> <para> - The query may use parameters, that is, placeholders for + The query can use parameters, that is, placeholders for values to be supplied whenever the plan is actually executed. In the query string, refer to parameters by the symbols <literal>$1</literal> ... <literal>$<replaceable>n</replaceable></literal>. @@ -417,7 +417,7 @@ $$ LANGUAGE pltcl; <listitem> <para> Doubles all occurrences of single quote and backslash characters - in the given string. This may be used to safely quote strings + in the given string. This can be used to safely quote strings that are to be inserted into SQL commands given to <function>spi_exec</function> or <function>spi_prepare</function>. @@ -726,9 +726,8 @@ CREATE TRIGGER trig_mytab_modcount BEFORE INSERT OR UPDATE ON mytab <title>Tcl Procedure Names</title> <para> - In <productname>PostgreSQL</productname>, one and the - same function name can be used for - different functions as long as the number of arguments or their types + In <productname>PostgreSQL</productname>, the same function name can be used for + different function definitions as long as the number of arguments or their types differ. Tcl, however, requires all procedure names to be distinct. PL/Tcl deals with this by making the internal Tcl procedure names contain the object |