Function initCreateTables

src/bin/pgbench/pgbench.c:4056–4152

* Create pgbench's standard tables */

 * Create pgbench's standard tables
 */
static void
initCreateTables(PGconn *con)
{
	/*
	 * Note: TPC-B requires at least 100 bytes per row, and the "filler"
	 * fields in these table declarations were intended to comply with that.
	 * The pgbench_accounts table complies with that because the "filler"
	 * column is set to blank-padded empty string. But for all other tables
	 * the columns default to NULL and so don't actually take any space.  We
	 * could fix that by giving them non-null default values.  However, that
	 * would completely break comparability of pgbench results with prior
	 * versions. Since pgbench has never pretended to be fully TPC-B compliant
	 * anyway, we stick with the historical behavior.
	 */
	struct ddlinfo
	{
		const char *table;		/* table name */
		const char *smcols;		/* column decls if accountIDs are 32 bits */
		const char *bigcols;	/* column decls if accountIDs are 64 bits */
		int			declare_fillfactor;
		char	   *distributed_col;
	};
	static const struct ddlinfo DDLs[] = {
		{
			"pgbench_history",
			"tid int,bid int,aid    int,delta int,mtime timestamp,filler char(22)",
			"tid int,bid int,aid bigint,delta int,mtime timestamp,filler char(22)",
			0
			, "bid"
		},
		{
			"pgbench_tellers",
			"tid int not null,bid int,tbalance int,filler char(84)",
			"tid int not null,bid int,tbalance int,filler char(84)",
			1,
			"tid"
		},
		{
			"pgbench_accounts",
			"aid    int not null,bid int,abalance int,filler char(84)",
			"aid bigint not null,bid int,abalance int,filler char(84)",
			1
			, "aid"
		},
		{
			"pgbench_branches",
			"bid int not null,bbalance int,filler char(88)",
			"bid int not null,bbalance int,filler char(88)",
			1
			, "bid"
		}
	};
	int			i;
	PQExpBufferData query;

	fprintf(stderr, "creating tables...\n");

	initPQExpBuffer(&query);