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Revision 14174

bugfix: schemas/util.sql: remove_prefix(), remove_suffix(): must be declared STRICT to handle NULL properly

View differences:

trunk/schemas/util.sql
4092 4092
--
4093 4093

  
4094 4094
CREATE FUNCTION remove_prefix(prefix text, str text, require boolean DEFAULT true) RETURNS text
4095
    LANGUAGE sql IMMUTABLE
4095
    LANGUAGE sql IMMUTABLE STRICT
4096 4096
    AS $$
4097
-- must be declared STRICT to handle NULL properly
4097 4098
SELECT CASE
4098 4099
WHEN substring(str from 1 for length(prefix)) = prefix THEN
4099 4100
	substring(str from 1+length(prefix))
......
4110 4111
--
4111 4112

  
4112 4113
CREATE FUNCTION remove_suffix(suffix text, str text, require boolean DEFAULT true) RETURNS text
4113
    LANGUAGE sql IMMUTABLE
4114
    LANGUAGE sql IMMUTABLE STRICT
4114 4115
    AS $$
4116
-- must be declared STRICT to handle NULL properly
4115 4117
SELECT CASE
4116 4118
WHEN substring(str from 1+(length(str)-length(suffix))) = suffix THEN
4117 4119
	substring(str from 1 for length(str)-length(suffix))

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