33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
Plaintext
Array iterator functions have been removed as of PostgreSQL 7.4, because
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equivalent functionality is now available built in to the backend.
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For example, previously, using contrib/array, you might have used the
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following construct:
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create table t(id int4[], txt text[]);
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-- select tuples with some id element equal to 123
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select * from t where t.id *= 123;
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Now you would do this instead:
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-- select tuples with some id element equal to 123
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select * from t where 123 = any (t.id);
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-- or you could also do this
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select * from t where 123 = some (t.id);
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Similarly, if using contrib/array, you did the following:
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-- select tuples with all txt elements matching '^[A-Z]'
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select * from t where t.txt[1:3] **~ '^[A-Z]';
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Now do this instead:
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-- select tuples with all txt elements matching '^[A-Z]'
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select * from t where '^[A-Z]' ~ all (t.txt[1:3]);
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See the related section in the online documentation for more detail:
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Table of Contents => Functions and Operators => Row and Array Comparisons
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