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ALTER <thing> [IF EXISTS] ... allows silent DDL if required,

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e.g. ALTER FOREIGN TABLE IF EXISTS foo RENAME TO bar

Pavel Stehule
This commit is contained in:
Simon Riggs
2012-01-23 23:25:04 +00:00
parent 4993a49b7c
commit b8a91d9d1c
19 changed files with 534 additions and 52 deletions
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4
src/include/nodes/parsenodes.h
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@@ -1171,6 +1171,7 @@ typedef struct AlterTableStmt
RangeVar *relation; /* table to work on */
List *cmds; /* list of subcommands */
ObjectType relkind; /* type of object */
bool missing_ok; /* skip error if table missing */
} AlterTableStmt;
typedef enum AlterTableType
@@ -1807,6 +1808,7 @@ typedef struct AlterSeqStmt
NodeTag type;
RangeVar *sequence; /* the sequence to alter */
List *options;
bool missing_ok; /* skip error if a role is missing? */
} AlterSeqStmt;
/* ----------------------
@@ -2117,6 +2119,7 @@ typedef struct RenameStmt
* trigger, etc) */
char *newname; /* the new name */
DropBehavior behavior; /* RESTRICT or CASCADE behavior */
bool missing_ok; /* skip error if missing? */
} RenameStmt;
/* ----------------------
@@ -2132,6 +2135,7 @@ typedef struct AlterObjectSchemaStmt
List *objarg; /* argument types, if applicable */
char *addname; /* additional name if needed */
char *newschema; /* the new schema */
bool missing_ok; /* skip error if missing? */
} AlterObjectSchemaStmt;
/* ----------------------