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458857cc9d
We have seen one too many reports of people trying to use 9.1 extension files in the old-fashioned way of sourcing them in psql. Not only does that usually not work (due to failure to substitute for MODULE_PATHNAME and/or @extschema@), but if it did work they'd get a collection of loose objects not an extension. To prevent this, insert an \echo ... \quit line that prints a suitable error message into each extension script file, and teach commands/extension.c to ignore lines starting with \echo. That should not only prevent any adverse consequences of loading a script file the wrong way, but make it crystal clear to users that they need to do it differently now. Tom Lane, following an idea of Andrew Dunstan's. Back-patch into 9.1 ... there is not going to be much value in this if we wait till 9.2.
89 lines
2.1 KiB
SQL
89 lines
2.1 KiB
SQL
/* contrib/tablefunc/tablefunc--1.0.sql */
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-- complain if script is sourced in psql, rather than via CREATE EXTENSION
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\echo Use "CREATE EXTENSION tablefunc" to load this file. \quit
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CREATE FUNCTION normal_rand(int4, float8, float8)
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RETURNS setof float8
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AS 'MODULE_PATHNAME','normal_rand'
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LANGUAGE C VOLATILE STRICT;
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-- the generic crosstab function:
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CREATE FUNCTION crosstab(text)
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RETURNS setof record
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AS 'MODULE_PATHNAME','crosstab'
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LANGUAGE C STABLE STRICT;
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-- examples of building custom type-specific crosstab functions:
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CREATE TYPE tablefunc_crosstab_2 AS
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(
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row_name TEXT,
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category_1 TEXT,
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category_2 TEXT
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);
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CREATE TYPE tablefunc_crosstab_3 AS
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(
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row_name TEXT,
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category_1 TEXT,
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category_2 TEXT,
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category_3 TEXT
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);
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CREATE TYPE tablefunc_crosstab_4 AS
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(
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row_name TEXT,
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category_1 TEXT,
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category_2 TEXT,
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category_3 TEXT,
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category_4 TEXT
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);
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CREATE FUNCTION crosstab2(text)
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RETURNS setof tablefunc_crosstab_2
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AS 'MODULE_PATHNAME','crosstab'
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LANGUAGE C STABLE STRICT;
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CREATE FUNCTION crosstab3(text)
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RETURNS setof tablefunc_crosstab_3
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AS 'MODULE_PATHNAME','crosstab'
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LANGUAGE C STABLE STRICT;
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CREATE FUNCTION crosstab4(text)
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RETURNS setof tablefunc_crosstab_4
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AS 'MODULE_PATHNAME','crosstab'
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LANGUAGE C STABLE STRICT;
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-- obsolete:
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CREATE FUNCTION crosstab(text,int)
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RETURNS setof record
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AS 'MODULE_PATHNAME','crosstab'
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LANGUAGE C STABLE STRICT;
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CREATE FUNCTION crosstab(text,text)
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RETURNS setof record
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AS 'MODULE_PATHNAME','crosstab_hash'
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LANGUAGE C STABLE STRICT;
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CREATE FUNCTION connectby(text,text,text,text,int,text)
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RETURNS setof record
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AS 'MODULE_PATHNAME','connectby_text'
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LANGUAGE C STABLE STRICT;
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CREATE FUNCTION connectby(text,text,text,text,int)
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RETURNS setof record
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AS 'MODULE_PATHNAME','connectby_text'
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LANGUAGE C STABLE STRICT;
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-- These 2 take the name of a field to ORDER BY as 4th arg (for sorting siblings)
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CREATE FUNCTION connectby(text,text,text,text,text,int,text)
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RETURNS setof record
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AS 'MODULE_PATHNAME','connectby_text_serial'
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LANGUAGE C STABLE STRICT;
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CREATE FUNCTION connectby(text,text,text,text,text,int)
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RETURNS setof record
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AS 'MODULE_PATHNAME','connectby_text_serial'
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LANGUAGE C STABLE STRICT;
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