DBLINK_B...QL_DELETE(3)

💖 NAME 💖

okay so bestie, welcome to dblink_build_sql_delete(3) from the PostgreSQL 14.24 Documentation! 🌸 This is the page for dblink_build_sql_delete, and it builds a DELETE statement using supplied values for primary key field values. lowkey iconic helper behavior. 💅

✨ SYNOPSIS ✨

the signature is giving:

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

🦋 DESCRIPTION 🦋

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. no cap, that's the whole vibe: you hand it the primary key values, it hands you back the DELETE. 🎀

💅 ARGUMENTS 💅

• relname — 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. 🙈
• primary_key_attnums — attribute numbers (1-based) of the primary key fields, for example 1 2. 🧚
• num_primary_key_atts — the number of primary key fields. 🔥
• 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. 💜

👑 RETURN VALUE 👑

Returns the requested SQL statement as text. slay, that's the return value, periodt. 💫

🌈 NOTES 🌈

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 yes, dropped columns can make this spicy in a historical-version way — keep that in mind, bestie. 🫶

🍓 EXAMPLES 🍓

here's the example from the page, copied exactly:

           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)

mwah 💋 — this iconic page is from PostgreSQL 14.24, dated 2026, and the footer vibes are DBLINK_B...QL_DELETE(3). periodt. ✨