> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands.md).

# 36.14. Embedded SQL Commands

## 36.14. Embedded SQL Commands

[ALLOCATE DESCRIPTOR](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-allocate-descriptor.md) — allocate an SQL descriptor area

[CONNECT](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-connect.md) — establish a database connection

[DEALLOCATE DESCRIPTOR](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-deallocate-descriptor.md) — deallocate an SQL descriptor area

[DECLARE](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-declare.md) — define a cursor

[DECLARE STATEMENT](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-declare-statement.md) — declare SQL statement identifier

[DESCRIBE](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-describe.md) — obtain information about a prepared statement or result set

[DISCONNECT](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-disconnect.md) — terminate a database connection

[EXECUTE IMMEDIATE](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-execute-immediate.md) — dynamically prepare and execute a statement

[GET DESCRIPTOR](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-get-descriptor.md) — get information from an SQL descriptor area

[OPEN](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-open.md) — open a dynamic cursor

[PREPARE](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-prepare.md) — prepare a statement for execution

[SET AUTOCOMMIT](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-set-autocommit.md) — set the autocommit behavior of the current session

[SET CONNECTION](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-set-connection.md) — select a database connection

[SET DESCRIPTOR](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-set-descriptor.md) — set information in an SQL descriptor area

[TYPE](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-type.md) — define a new data type

[VAR](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-var.md) — define a variable

[WHENEVER](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands/ecpg-sql-whenever.md) — specify the action to be taken when an SQL statement causes a specific class condition to be raised

This section describes all SQL commands that are specific to embedded SQL. Also refer to the SQL commands listed in [SQL Commands](/15/reference/sql-commands.md), which can also be used in embedded SQL, unless stated otherwise.

***

原文：[PostgreSQL 15.19 Documentation](/15/client-interfaces/ecpg-embedded-sql-in-c/35.14.-embedded-sql-commands.md)（英文原文，待翻譯）


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