FireDAC在查询之前使用DECLARE CURSOR

Question

When I execute following query in PG Admin III, it runs fine:

WITH new_values (updated_at,talker_id,sentence_id,v0,v1,v2,v3,v4,v5) AS (
    VALUES (current_timestamp,'2','3','4','5','6','7','8','9')
),
UPSERT AS (
    UPDATE utel u
    SET
        updated_at=nv.updated_at,
        v0=nv.v0,v1=nv.v1,v2=nv.v2,v3=nv.v3,v4=nv.v4,v5=nv.v5
    FROM
        new_values nv
    WHERE
        u.talker_id=nv.talker_id AND u.sentence_id=nv.sentence_id RETURNING u.*
)
INSERT into utel (updated_at,talker_id,sentence_id,v0,v1,v2,v3,v4,v5)
SELECT updated_at,talker_id,sentence_id,v0,v1,v2,v3,v4,v5
FROM new_values WHERE NOT EXISTS(
    SELECT 1 FROM upsert up
    WHERE
        up.talker_id=new_values.talker_id
        AND up.sentence_id=new_values.sentence_id
)

but when I try to execute it through TFDQuery, PostgreSQL complains:

syntax error at or near "INSERT" at character 355

I turned on PostgreSQL logging to Windows error log and saw following:

DECLARE "10STM" CURSOR WITH HOLD FOR
WITH new_values (updated_at,talker_id,sentence_id,v0,v1,v2,v3,v4,v5) AS (
    VALUES (current_timestamp,'2','3','4','5','6','7','8','9')
),
UPSERT AS (
    UPDATE utel u
    SET
        updated_at=nv.updated_at,
        v0=nv.v0,v1=nv.v1,v2=nv.v2,v3=nv.v3,v4=nv.v4,v5=nv.v5
    FROM
        new_values nv
    WHERE
        u.talker_id=nv.talker_id AND u.sentence_id=nv.sentence_id RETURNING u.*
)
INSERT into utel (updated_at,talker_id,sentence_id,v0,v1,v2,v3,v4,v5)
SELECT updated_at,talker_id,sentence_id,v0,v1,v2,v3,v4,v5
FROM new_values WHERE NOT EXISTS(
    SELECT 1 FROM upsert up
    WHERE
        up.talker_id=new_values.talker_id
        AND up.sentence_id=new_values.sentence_id
)

When I execute the same, with DECLARE "10STM" CURSOR WITH HOLD FOR in PG Admin III, I get exact the same error.

Why FireDAC precedes PG query with a cursor and how to avoid this?

Answer 1

Victoria doesn't want to get her points, so here is the answer:

Cursor kind in fetch options was set to ckAutomatic . I changed it to ckDefault and it works now.