DBLINK_B...QL_DELETE(3)

🌸 NAME 🌸

hey bestie, welcome to dblink_build_sql_delete(3) from the PostgreSQL 16.15 documentation 💖 this function builds a DELETE statement using supplied values for primary key field values. slay.

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✨ SYNOPSIS ✨

dblink_build_sql_delete(text relname,
                        int2vector primary_key_attnums,
                        integer num_primary_key_atts,
                        text[] tgt_pk_att_vals_array) returns text

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🦋 DESCRIPTION 🦋

okay so dblink_build_sql_delete can be useful in doing selective replication of a local table to a remote database. it builds an SQL DELETE command that will delete the row with the given primary key values. literally iconic for that remote-db life 💅

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🎀 ARGUMENTS 🎀

• relname — the name of a local relation, for example foo or myschema.mytab. include double quotes if the name is mixed-case or contains special characters, for example "FooBar"; without quotes, the string will be folded to lower case. iykyk 🫶
• primary_key_attnums — attribute numbers (1-based) of the primary key fields, for example 1 2. no cap.
• num_primary_key_atts — the number of primary key fields. that's the whole vibe.
• tgt_pk_att_vals_array — values of the primary key fields to be used in the resulting DELETE command. each field is represented in text form. periodt.

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👑 RETURN VALUE 👑

it returns the requested SQL statement as text. bestie, that's it — pure text realness 💖

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⭐ NOTES ⭐

okay so important lore: as of PostgreSQL 9.0, the attribute numbers in primary_key_attnums are interpreted as logical column numbers, corresponding to the column's position in SELECT * FROM relname. previous versions interpreted the numbers as physical column positions. there is a difference if any column(s) to the left of the indicated column have been dropped during the lifetime of the table. so yeah, keep that in mind 💀

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💜 EXAMPLES 💜

           SELECT dblink_build_sql_delete('"MyFoo"', '1 2', 2, '{"1", "b"}');
                      dblink_build_sql_delete
           ---------------------------------------------
            DELETE FROM "MyFoo" WHERE f1='1' AND f2='b'
           (1 row)

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this iconic little page is DBLINK_B...QL_DELETE(3) — brought to you by PostgreSQL 16.15, dated 2026. mwah 💋✨