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Add a queryId field to Query and PlannedStmt. This is not used by the core backend, except for being copied around at appropriate times. It's meant to allow plug-ins to track a particular query forward from parse analysis to execution. The queryId is intentionally not dumped into stored rules (and hence this commit doesn't bump catversion). You could argue that choice either way, but it seems better that stored rule strings not have any dependency on plug-ins that might or might not be present. Also, add a post_parse_analyze_hook that gets invoked at the end of parse analysis (but only for top-level analysis of complete queries, not cases such as analyzing a domain's default-value expression). This is mainly meant to be used to compute and assign a queryId, but it could have other applications. Peter Geoghegan |
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| .. | ||
| .gitignore | ||
| analyze.c | ||
| gram.y | ||
| keywords.c | ||
| kwlookup.c | ||
| Makefile | ||
| parse_agg.c | ||
| parse_clause.c | ||
| parse_coerce.c | ||
| parse_collate.c | ||
| parse_cte.c | ||
| parse_expr.c | ||
| parse_func.c | ||
| parse_node.c | ||
| parse_oper.c | ||
| parse_param.c | ||
| parse_relation.c | ||
| parse_target.c | ||
| parse_type.c | ||
| parse_utilcmd.c | ||
| parser.c | ||
| README | ||
| scan.l | ||
| scansup.c | ||
src/backend/parser/README Parser ====== This directory does more than tokenize and parse SQL queries. It also creates Query structures for the various complex queries that are passed to the optimizer and then executor. parser.c things start here scan.l break query into tokens scansup.c handle escapes in input strings kwlookup.c turn keywords into specific tokens keywords.c table of standard keywords (passed to kwlookup.c) gram.y parse the tokens and produce a "raw" parse tree analyze.c top level of parse analysis for optimizable queries parse_agg.c handle aggregates, like SUM(col1), AVG(col2), ... parse_clause.c handle clauses like WHERE, ORDER BY, GROUP BY, ... parse_coerce.c handle coercing expressions to different data types parse_collate.c assign collation information in completed expressions parse_cte.c handle Common Table Expressions (WITH clauses) parse_expr.c handle expressions like col, col + 3, x = 3 or x = 4 parse_func.c handle functions, table.column and column identifiers parse_node.c create nodes for various structures parse_oper.c handle operators in expressions parse_param.c handle Params (for the cases used in the core backend) parse_relation.c support routines for tables and column handling parse_target.c handle the result list of the query parse_type.c support routines for data type handling parse_utilcmd.c parse analysis for utility commands (done at execution time)